{"id":3654,"date":"2025-01-23T10:40:43","date_gmt":"2025-01-23T09:40:43","guid":{"rendered":"https:\/\/sab-bremen.de\/fittings\/systems\/emergency-blow-systems\/"},"modified":"2026-01-08T16:28:55","modified_gmt":"2026-01-08T15:28:55","slug":"emergency-blow-systems","status":"publish","type":"page","link":"https:\/\/sab-bremen.de\/en\/fittings\/systems\/emergency-blow-systems\/","title":{"rendered":"Emergency deballasting"},"content":{"rendered":"<section class=\"l-section wpb_row height_auto width_full parallax_fixed\"><div class=\"l-section-h i-cf\"><div class=\"g-cols vc_row via_grid cols_1 laptops-cols_inherit tablets-cols_inherit mobiles-cols_1 valign_bottom type_default stacking_default\" style=\"--columns-gap:0rem;\"><div class=\"wpb_column vc_column_container headerText\"><div class=\"vc_column-inner\"><div class=\"w-image align_none\"><div class=\"w-image-h\"><img decoding=\"async\" width=\"2560\" height=\"720\" src=\"https:\/\/sab-bremen.de\/wp-content\/uploads\/2025\/01\/ttgefojg-14.jpg\" class=\"attachment-full size-full\" alt=\"Zwei Notanblasesysteme, freigestellt vor verschwommenem Hintergrund\" loading=\"lazy\" srcset=\"https:\/\/sab-bremen.de\/wp-content\/uploads\/2025\/01\/ttgefojg-14.jpg 2560w, https:\/\/sab-bremen.de\/wp-content\/uploads\/2025\/01\/ttgefojg-14-300x84.jpg 300w, https:\/\/sab-bremen.de\/wp-content\/uploads\/2025\/01\/ttgefojg-14-1024x288.jpg 1024w, https:\/\/sab-bremen.de\/wp-content\/uploads\/2025\/01\/ttgefojg-14-450x127.jpg 450w, https:\/\/sab-bremen.de\/wp-content\/uploads\/2025\/01\/ttgefojg-14-600x169.jpg 600w\" sizes=\"auto, (max-width: 2560px) 100vw, 2560px\" \/><\/div><\/div><\/div><\/div><\/div><\/div><\/section><!-- Row Backgrounds --><div class=\"upb_color\" data-bg-override=\"0\" data-bg-color=\"#FFFFFF\" data-fadeout=\"\" data-fadeout-percentage=\"30\" data-parallax-content=\"parallax_content_value\" data-parallax-content-sense=\"30\" data-row-effect-mobile-disable=\"true\" data-img-parallax-mobile-disable=\"true\" data-rtl=\"false\"  data-custom-vc-row=\"\"  data-vc=\"8.7.2\"  data-is_old_vc=\"\"  data-theme-support=\"\"   data-overlay=\"false\" data-overlay-color=\"\" data-overlay-pattern=\"\" data-overlay-pattern-opacity=\"\" data-overlay-pattern-size=\"\"    ><\/div><section class=\"l-section wpb_row us_custom_d2e00dc6 height_medium\"><div class=\"l-section-h i-cf\"><div class=\"g-cols vc_row via_grid cols_1 laptops-cols_inherit tablets-cols_inherit mobiles-cols_1 valign_top type_default stacking_default\"><div class=\"wpb_column vc_column_container\"><div class=\"vc_column-inner\"><nav class=\"g-breadcrumbs us_custom_53b04f7d separator_icon align_none\" itemscope itemtype=\"http:\/\/schema.org\/BreadcrumbList\"><div class=\"g-breadcrumbs-item\" itemscope itemprop=\"itemListElement\" itemtype=\"http:\/\/schema.org\/ListItem\"><a itemprop=\"item\" href=\"https:\/\/sab-bremen.de\/en\/\"><span itemprop=\"name\">Home<\/span><\/a><meta itemprop=\"position\" content=\"1\"\/><\/div><div class=\"g-breadcrumbs-separator\"><i class=\"far fa-angle-right\"><\/i><\/div><div class=\"g-breadcrumbs-item\">Pages<\/div><\/nav><\/div><\/div><\/div><\/div><\/section><section class=\"l-section wpb_row us_custom_cdf14ffd noPaddingTop height_medium\"><div class=\"l-section-h i-cf\"><div class=\"g-cols vc_row via_grid cols_1 laptops-cols_inherit tablets-cols_inherit mobiles-cols_1 valign_top type_default stacking_default\"><div class=\"wpb_column vc_column_container\"><div class=\"vc_column-inner\"><div class=\"g-cols wpb_row via_grid cols_1 laptops-cols_inherit tablets-cols_inherit mobiles-cols_1 valign_top type_default stacking_default\" style=\"--columns-gap:3rem;\"><div class=\"wpb_column vc_column_container\"><div class=\"vc_column-inner\"><div class=\"wpb_text_column us_custom_8f74e794 has_text_color\"><div class=\"wpb_wrapper\"><h1>Emergency Blow Systems<\/h1>\n<\/div><\/div><\/div><\/div><\/div><div class=\"g-cols wpb_row via_grid cols_1 laptops-cols_inherit tablets-cols_inherit mobiles-cols_1 valign_top type_default stacking_default\" style=\"--columns-gap:3rem;\"><div class=\"wpb_column vc_column_container\"><div class=\"vc_column-inner\"><div class=\"wpb_text_column\"><div class=\"wpb_wrapper\"><p>Based on customer\u2019s specification we develop a system that fully achieves the flow and pressure requirements, we build it in our own workshop and test it in our unique test facility. SAB has for decades developed and in use different Emergency De-Ballasting Systems on submarines. Based on our experience we are happy to advise navies and shipyards during implementation on board and habour and sea trials.<\/p>\n<\/div><\/div><\/div><\/div><\/div><\/div><\/div><\/div><\/div><\/section><section class=\"l-section wpb_row us_custom_c70c97eb produktTextBlock height_medium\"><div class=\"l-section-h i-cf\"><div class=\"g-cols vc_row via_grid cols_1 laptops-cols_inherit tablets-cols_inherit mobiles-cols_1 valign_top type_default stacking_default\"><div class=\"wpb_column vc_column_container\"><div class=\"vc_column-inner\"><div class=\"g-cols wpb_row via_grid cols_1 laptops-cols_inherit tablets-cols_inherit mobiles-cols_1 valign_top type_default stacking_default\" style=\"--columns-gap:3rem;\"><div class=\"wpb_column vc_column_container\"><div class=\"vc_column-inner\"><div class=\"wpb_text_column\"><div class=\"wpb_wrapper\"><h2><span>Background information<\/span><\/h2>\n<\/div><\/div><div class=\"wpb_text_column\"><div class=\"wpb_wrapper\"><div class=\"et_pb_row et_pb_row_4\">\n<div class=\"et_pb_column et_pb_column_4_4 et_pb_column_4 et_pb_css_mix_blend_mode_passthrough et-last-child\">\n<div class=\"et_pb_module et_pb_text et_pb_text_2 et_pb_text_align_left et_pb_bg_layout_light\">\n<div class=\"et_pb_text_inner\">\n<p>If a problem occurs on a submarine whilst submerged a fast, secure surfacing of the boat is required and the on-board Emergency De-ballasting System EBS will be actuated. By actu\u00adating the EBS large amounts of air\/gas will be transferred into the Main Ballast Tank (MBT) forcing the water out of the tank thus lowering the weight of the submarine and bringing it quickly to the surface.<br \/>\nDuring the emergence of the submarine the following things are crucial and have to be ta\u00adken into the build calculation:<\/p>\n<p>\u2022 The submarine should emerge as quickly as possible<br \/>\n\u2022 The overpressure of the MBT shall not damage the tank<br \/>\n\u2022 The emerging angle of the submarine shall be in the limits of the submarine design<br \/>\n\u2022 A possibility to stop emergence is desirable<\/p>\n<p>At the start of the blow cycle the pressure in the MBT will raise, a gas bubble then builds up allowing the water in the MBT to start to move out of the tank, at this stage the pressure will begin to stabilise and the boat will rise. Due to the natural expansion of the air\/gas in the MBT during the ascent of the boat, pressure will increase again causing the boat to rise further allowing the pressure to begin to slowly drop off.<\/p>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div><\/div><div class=\"w-slider style_none fit_scaledown nav_dots count_1\"><div class=\"w-slider-h\" aria-hidden=\"true\"><div class=\"royalSlider\"><div class=\"rsContent\"><a class=\"rsImg\" data-rsw=\"2560\" data-rsh=\"720\" data-rsBigImg=\"https:\/\/sab-bremen.de\/wp-content\/uploads\/2025\/01\/ttgefojg-15.jpg\" href=\"https:\/\/sab-bremen.de\/wp-content\/uploads\/2025\/01\/ttgefojg-15.jpg\"><span data-alt=\"U-Boot taucht an Wasseroberflaeche auf, Wasser spritzt\"><\/span><\/a><\/div><\/div><img decoding=\"async\" src=\"https:\/\/sab-bremen.de\/wp-content\/uploads\/2025\/01\/ttgefojg-15.jpg\" width=\"2560\" height=\"720\" alt=\"U-Boot taucht an Wasseroberflaeche auf, Wasser spritzt\" loading=\"lazy\"><\/div><div class=\"w-slider-json\" onclick='return {&quot;autoScaleSlider&quot;:true,&quot;addActiveClass&quot;:true,&quot;loop&quot;:true,&quot;fadeInLoadedSlide&quot;:false,&quot;slidesSpacing&quot;:0,&quot;imageScalePadding&quot;:0,&quot;numImagesToPreload&quot;:2,&quot;arrowsNav&quot;:true,&quot;arrowsNavAutoHide&quot;:false,&quot;transitionType&quot;:&quot;move&quot;,&quot;transitionSpeed&quot;:250,&quot;block&quot;:{&quot;moveEffect&quot;:&quot;none&quot;,&quot;speed&quot;:300},&quot;thumbs&quot;:{&quot;fitInViewport&quot;:false,&quot;firstMargin&quot;:false,&quot;spacing&quot;:4},&quot;controlNavigation&quot;:&quot;none&quot;,&quot;fullscreen&quot;:{&quot;enabled&quot;:true},&quot;autoScaleSliderWidth&quot;:2560,&quot;autoScaleSliderHeight&quot;:720}'><\/div><\/div><\/div><\/div><\/div><\/div><\/div><\/div><\/div><\/section><section class=\"l-section wpb_row produktTextBlock height_medium\"><div class=\"l-section-h i-cf\"><div class=\"g-cols vc_row via_grid cols_1 laptops-cols_inherit tablets-cols_inherit mobiles-cols_1 valign_top type_default stacking_default\"><div class=\"wpb_column vc_column_container\"><div class=\"vc_column-inner\"><div class=\"g-cols wpb_row via_grid cols_1 laptops-cols_inherit tablets-cols_inherit mobiles-cols_1 valign_top type_default stacking_default\" style=\"--columns-gap:3rem;\"><div class=\"wpb_column vc_column_container\"><div class=\"vc_column-inner\"><div class=\"wpb_text_column\"><div class=\"wpb_wrapper\"><h2><span>State of the art<\/span><\/h2>\n<\/div><\/div><div class=\"wpb_text_column\"><div class=\"wpb_wrapper\"><p>Over the years rocket boosters offering a high emerging speed have been used but these are very expensive to purchase\/install and allow no possibility for follow on system training or testing. The cost efficient option is to use readily available High Pressure (HP) air to operate the system which ensures that on-board training and testing are easily achieved throughout the life of the boat. In HP air driven EBS the main valves used are single stage slow opening blow valves, single stage fast opening regulators or two stage controlled blow valves.<\/p>\n<\/div><\/div><div class=\"w-slider style_none fit_scaledown nav_dots count_1\"><div class=\"w-slider-h\" aria-hidden=\"true\"><div class=\"royalSlider\"><div class=\"rsContent\"><a class=\"rsImg\" data-rsw=\"2560\" data-rsh=\"720\" data-rsBigImg=\"https:\/\/sab-bremen.de\/wp-content\/uploads\/2025\/01\/ttgefojg-16.jpg\" href=\"https:\/\/sab-bremen.de\/wp-content\/uploads\/2025\/01\/ttgefojg-16.jpg\"><span data-alt=\"U-Boot taucht an Wasseroberflaeche auf, Wasser spritzt\"><\/span><\/a><\/div><\/div><img decoding=\"async\" src=\"https:\/\/sab-bremen.de\/wp-content\/uploads\/2025\/01\/ttgefojg-16.jpg\" width=\"2560\" height=\"720\" alt=\"U-Boot taucht an Wasseroberflaeche auf, Wasser spritzt\" loading=\"lazy\"><\/div><div class=\"w-slider-json\" onclick='return {&quot;autoScaleSlider&quot;:true,&quot;addActiveClass&quot;:true,&quot;loop&quot;:true,&quot;fadeInLoadedSlide&quot;:false,&quot;slidesSpacing&quot;:0,&quot;imageScalePadding&quot;:0,&quot;numImagesToPreload&quot;:2,&quot;arrowsNav&quot;:true,&quot;arrowsNavAutoHide&quot;:false,&quot;transitionType&quot;:&quot;move&quot;,&quot;transitionSpeed&quot;:250,&quot;block&quot;:{&quot;moveEffect&quot;:&quot;none&quot;,&quot;speed&quot;:300},&quot;thumbs&quot;:{&quot;fitInViewport&quot;:false,&quot;firstMargin&quot;:false,&quot;spacing&quot;:4},&quot;controlNavigation&quot;:&quot;none&quot;,&quot;fullscreen&quot;:{&quot;enabled&quot;:true},&quot;autoScaleSliderWidth&quot;:2560,&quot;autoScaleSliderHeight&quot;:720}'><\/div><\/div><\/div><\/div><\/div><\/div><\/div><\/div><\/div><\/section><section class=\"l-section wpb_row us_custom_c70c97eb produktTextBlock height_medium\"><div class=\"l-section-h i-cf\"><div class=\"g-cols vc_row via_grid cols_1 laptops-cols_inherit tablets-cols_inherit mobiles-cols_1 valign_top type_default stacking_default\"><div class=\"wpb_column vc_column_container\"><div class=\"vc_column-inner\"><div class=\"g-cols wpb_row via_grid cols_2 laptops-cols_inherit tablets-cols_inherit mobiles-cols_1 valign_top type_default stacking_default\" style=\"--columns-gap:3rem;\"><div class=\"wpb_column vc_column_container\"><div class=\"vc_column-inner\"><div class=\"w-slider style_none fit_scaledown nav_dots count_3\"><div class=\"w-slider-h\" aria-hidden=\"true\"><div class=\"royalSlider\"><div class=\"rsContent\"><a class=\"rsImg\" data-rsw=\"591\" data-rsh=\"591\" data-rsBigImg=\"https:\/\/sab-bremen.de\/wp-content\/uploads\/2025\/01\/hgfhfgh-26.jpg\" href=\"https:\/\/sab-bremen.de\/wp-content\/uploads\/2025\/01\/hgfhfgh-26.jpg\"><span data-alt=\"Zweistufiges Anblaseregelventil, freigestellt\"><\/span><\/a><\/div><div class=\"rsContent\"><a class=\"rsImg\" data-rsw=\"591\" data-rsh=\"591\" data-rsBigImg=\"https:\/\/sab-bremen.de\/wp-content\/uploads\/2025\/01\/hghfghfgfhfgh-14.jpg\" href=\"https:\/\/sab-bremen.de\/wp-content\/uploads\/2025\/01\/hghfghfgfhfgh-14.jpg\"><span data-alt=\"Zweistufiges Anblaseregelventil, freigestellt\"><\/span><\/a><\/div><div class=\"rsContent\"><a class=\"rsImg\" data-rsw=\"591\" data-rsh=\"591\" data-rsBigImg=\"https:\/\/sab-bremen.de\/wp-content\/uploads\/2025\/01\/gsdfdgdfgdf.jpg\" href=\"https:\/\/sab-bremen.de\/wp-content\/uploads\/2025\/01\/gsdfdgdfgdf.jpg\"><span data-alt=\"Zweistufiges Anblaseregelventil, freigestellt\"><\/span><\/a><\/div><\/div><img decoding=\"async\" src=\"https:\/\/sab-bremen.de\/wp-content\/uploads\/2025\/01\/hgfhfgh-26.jpg\" width=\"591\" height=\"591\" alt=\"Zweistufiges Anblaseregelventil, freigestellt\" loading=\"lazy\"><\/div><div class=\"w-slider-json\" onclick='return {&quot;autoScaleSlider&quot;:true,&quot;addActiveClass&quot;:true,&quot;loop&quot;:true,&quot;fadeInLoadedSlide&quot;:false,&quot;slidesSpacing&quot;:0,&quot;imageScalePadding&quot;:0,&quot;numImagesToPreload&quot;:2,&quot;arrowsNav&quot;:true,&quot;arrowsNavAutoHide&quot;:false,&quot;transitionType&quot;:&quot;move&quot;,&quot;transitionSpeed&quot;:250,&quot;block&quot;:{&quot;moveEffect&quot;:&quot;none&quot;,&quot;speed&quot;:300},&quot;thumbs&quot;:{&quot;fitInViewport&quot;:false,&quot;firstMargin&quot;:false,&quot;spacing&quot;:4},&quot;controlNavigation&quot;:&quot;bullets&quot;,&quot;fullscreen&quot;:{&quot;enabled&quot;:true},&quot;autoScaleSliderWidth&quot;:591,&quot;autoScaleSliderHeight&quot;:591}'><\/div><\/div><\/div><\/div><div class=\"wpb_column vc_column_container\"><div class=\"vc_column-inner\"><div class=\"wpb_text_column\"><div class=\"wpb_wrapper\"><h2><span>Two stage controlled blow off\u00a0 valve<\/span><\/h2>\n<\/div><\/div><div class=\"wpb_text_column\"><div class=\"wpb_wrapper\"><p>The two stage controlled blow valve ensures a very safe operation where very high flows are achieved.<br \/>\nThe two stage controlled blow valve consists of a pneumatically actuated throttle valve for the first stage and a pneumatically opened stop valve in the second stage. The size of the 1st stage (10-25mm Dia) will be signifi\u00adcantly smaller than the size of the 2nd stage (50-100 mm Dia).<br \/>\nActuation of the emergency blow valve by means of compressed air will open the 1st stage slowly allowing for the build-up an air bubble in the ballast tank and start the flow of water out of the ballast tank. The 1st stage remains open for the rest of the blow\u00ading process. Once the maximum allowable differential pressure between ballast tank pressure and external seawater pressure is reached the 2nd stage will be closed. The second stage, which is operated by means of a mechanical \/ pneumatic control unit, will open again at a pre-set differential pressu\u00adre. The control unit can be integrated in the emergency blow valve.<br \/>\nOther options available within the design are for a second in\u00adtegrated control unit which will close the second stage when blowing in shallow depths, a ma\u00adnual override and a position indi\u00adcation\/transmission operated by indicators\/limit switches.<\/p>\n<\/div><\/div><\/div><\/div><\/div><\/div><\/div><\/div><\/div><\/section><section class=\"l-section wpb_row produktTextBlock height_medium\"><div class=\"l-section-h i-cf\"><div class=\"g-cols vc_row via_grid cols_1 laptops-cols_inherit tablets-cols_inherit mobiles-cols_1 valign_top type_default stacking_default\"><div class=\"wpb_column vc_column_container\"><div class=\"vc_column-inner\"><div class=\"g-cols wpb_row via_grid cols_2 laptops-cols_inherit tablets-cols_inherit mobiles-cols_1 valign_top type_default stacking_default\" style=\"--columns-gap:3rem;\"><div class=\"wpb_column vc_column_container\"><div class=\"vc_column-inner\"><div class=\"w-slider style_none fit_scaledown nav_dots count_2\"><div class=\"w-slider-h\" aria-hidden=\"true\"><div class=\"royalSlider\"><div class=\"rsContent\"><a class=\"rsImg\" data-rsw=\"591\" data-rsh=\"591\" data-rsBigImg=\"https:\/\/sab-bremen.de\/wp-content\/uploads\/2025\/01\/gsdfdgdfgdf-1.jpg\" href=\"https:\/\/sab-bremen.de\/wp-content\/uploads\/2025\/01\/gsdfdgdfgdf-1.jpg\"><span data-alt=\"Einstufiges langsamoeffnendes Anblaseregelventil, freigestellt\"><\/span><\/a><\/div><div class=\"rsContent\"><a class=\"rsImg\" data-rsw=\"591\" data-rsh=\"591\" data-rsBigImg=\"https:\/\/sab-bremen.de\/wp-content\/uploads\/2025\/01\/hgfhfgh-27.jpg\" href=\"https:\/\/sab-bremen.de\/wp-content\/uploads\/2025\/01\/hgfhfgh-27.jpg\"><span data-alt=\"Einstufiges langsamoeffnendes Anblaseregelventil, freigestellt\"><\/span><\/a><\/div><\/div><img decoding=\"async\" src=\"https:\/\/sab-bremen.de\/wp-content\/uploads\/2025\/01\/gsdfdgdfgdf-1.jpg\" width=\"591\" height=\"591\" alt=\"Einstufiges langsamoeffnendes Anblaseregelventil, freigestellt\" loading=\"lazy\"><\/div><div class=\"w-slider-json\" onclick='return {&quot;autoScaleSlider&quot;:true,&quot;addActiveClass&quot;:true,&quot;loop&quot;:true,&quot;fadeInLoadedSlide&quot;:false,&quot;slidesSpacing&quot;:0,&quot;imageScalePadding&quot;:0,&quot;numImagesToPreload&quot;:2,&quot;arrowsNav&quot;:true,&quot;arrowsNavAutoHide&quot;:false,&quot;transitionType&quot;:&quot;move&quot;,&quot;transitionSpeed&quot;:250,&quot;block&quot;:{&quot;moveEffect&quot;:&quot;none&quot;,&quot;speed&quot;:300},&quot;thumbs&quot;:{&quot;fitInViewport&quot;:false,&quot;firstMargin&quot;:false,&quot;spacing&quot;:4},&quot;controlNavigation&quot;:&quot;bullets&quot;,&quot;fullscreen&quot;:{&quot;enabled&quot;:true},&quot;autoScaleSliderWidth&quot;:591,&quot;autoScaleSliderHeight&quot;:591}'><\/div><\/div><\/div><\/div><div class=\"wpb_column vc_column_container\"><div class=\"vc_column-inner\"><div class=\"wpb_text_column\"><div class=\"wpb_wrapper\"><h2>Single stage slow opening blow valve<\/h2>\n<\/div><\/div><div class=\"wpb_text_column\"><div class=\"wpb_wrapper\"><p>Single stage slow opening blow valves are adapted to the customer\u2019s requirements in terms of flow, size, dimensions and opening time. For these types of valves a correct setting of the flow curve is very important to avoid any over pressurization of the MBT.<br \/>\nSAB has successfully supplied over the years several types of single stage slow opening blow valves to customers all over the world.<br \/>\nThe system valves can be located inside the submarines hull or in the ballast tanks and can be equipped with a manual override. Depen\u00adding on customer\u2019s requirements they can be equipped with throttle valves, hydraulic dam\u00adpening systems, etc.<br \/>\nSAB\u2019s emergency blow valves can be fitted with double, redundant actuation pistons in or\u00adder to allow actuation from different parts of the submarine. The monitoring of this can be done by means of limit switches.<\/p>\n<\/div><\/div><\/div><\/div><\/div><\/div><\/div><\/div><\/div><\/section><section class=\"l-section wpb_row us_custom_c70c97eb produktTextBlock height_medium\"><div class=\"l-section-h i-cf\"><div class=\"g-cols vc_row via_grid cols_1 laptops-cols_inherit tablets-cols_inherit mobiles-cols_1 valign_top type_default stacking_default\"><div class=\"wpb_column vc_column_container\"><div class=\"vc_column-inner\"><div class=\"g-cols wpb_row via_grid cols_2 laptops-cols_inherit tablets-cols_inherit mobiles-cols_1 valign_top type_default stacking_default\" style=\"--columns-gap:3rem;\"><div class=\"wpb_column vc_column_container\"><div class=\"vc_column-inner\"><div class=\"w-slider style_none fit_scaledown nav_dots count_1\"><div class=\"w-slider-h\" aria-hidden=\"true\"><div class=\"royalSlider\"><div class=\"rsContent\"><a class=\"rsImg\" data-rsw=\"591\" data-rsh=\"591\" data-rsBigImg=\"https:\/\/sab-bremen.de\/wp-content\/uploads\/2025\/01\/gsdfdgdfgdf-2.jpg\" href=\"https:\/\/sab-bremen.de\/wp-content\/uploads\/2025\/01\/gsdfdgdfgdf-2.jpg\"><span data-alt=\"Einstufiges schnelloeffnendes Anblaseregelventil, freigestellt\"><\/span><\/a><\/div><\/div><img decoding=\"async\" src=\"https:\/\/sab-bremen.de\/wp-content\/uploads\/2025\/01\/gsdfdgdfgdf-2.jpg\" width=\"591\" height=\"591\" alt=\"Einstufiges schnelloeffnendes Anblaseregelventil, freigestellt\" loading=\"lazy\"><\/div><div class=\"w-slider-json\" onclick='return {&quot;autoScaleSlider&quot;:true,&quot;addActiveClass&quot;:true,&quot;loop&quot;:true,&quot;fadeInLoadedSlide&quot;:false,&quot;slidesSpacing&quot;:0,&quot;imageScalePadding&quot;:0,&quot;numImagesToPreload&quot;:2,&quot;arrowsNav&quot;:true,&quot;arrowsNavAutoHide&quot;:false,&quot;transitionType&quot;:&quot;move&quot;,&quot;transitionSpeed&quot;:250,&quot;block&quot;:{&quot;moveEffect&quot;:&quot;none&quot;,&quot;speed&quot;:300},&quot;thumbs&quot;:{&quot;fitInViewport&quot;:false,&quot;firstMargin&quot;:false,&quot;spacing&quot;:4},&quot;controlNavigation&quot;:&quot;none&quot;,&quot;fullscreen&quot;:{&quot;enabled&quot;:true},&quot;autoScaleSliderWidth&quot;:591,&quot;autoScaleSliderHeight&quot;:591}'><\/div><\/div><\/div><\/div><div class=\"wpb_column vc_column_container\"><div class=\"vc_column-inner\"><div class=\"wpb_text_column\"><div class=\"wpb_wrapper\"><h2><span>Single stage fast opening regulating blow valve<\/span><\/h2>\n<\/div><\/div><div class=\"wpb_text_column\"><div class=\"wpb_wrapper\"><p>The single stage regulating blow valve works on the principle of a pressure reducer, re\u00adgulating the outlet pressure to prevent overpressure in the MBT. The single stage fast opening regulating blow valve works on the principle of a pres\u00adsure reducing valve by regulating the outlet pressure to a set value above the differential pressure; (i.e.) 1,0 bar above the differential pressure between ballast tank and external seawater depth pressure. The control valve core evaluates the pres\u00adsure control lines of the ballast tank and the seawater depth. The emergency de-ballasting procedure is controlled by a com\u00adbined mechanical \/hydraulic\/pneumatic sys\u00adtem. This element will control the pressure in the MBT irrespective of the actual diving depth, the level of water in the ballast tank and the available flow of compressed air. In order to meet with this requirement, the control valve core is equipped with a pres\u00adsure balanced piston.<\/p>\n<\/div><\/div><\/div><\/div><\/div><\/div><\/div><\/div><\/div><\/section><section class=\"l-section wpb_row produktTextBlock height_medium\"><div class=\"l-section-h i-cf\"><div class=\"g-cols vc_row via_grid cols_1 laptops-cols_inherit tablets-cols_inherit mobiles-cols_1 valign_top type_default stacking_default\"><div class=\"wpb_column vc_column_container\"><div class=\"vc_column-inner\"><div class=\"g-cols wpb_row via_grid cols_2 laptops-cols_inherit tablets-cols_inherit mobiles-cols_1 valign_top type_default stacking_default\" style=\"--columns-gap:3rem;\"><div class=\"wpb_column vc_column_container\"><div class=\"vc_column-inner\"><div class=\"w-slider style_none fit_scaledown nav_dots count_2\"><div class=\"w-slider-h\" aria-hidden=\"true\"><div class=\"royalSlider\"><div class=\"rsContent\"><a class=\"rsImg\" data-rsw=\"591\" data-rsh=\"591\" data-rsBigImg=\"https:\/\/sab-bremen.de\/wp-content\/uploads\/2025\/01\/gsdfdgdfgdf-3.jpg\" href=\"https:\/\/sab-bremen.de\/wp-content\/uploads\/2025\/01\/gsdfdgdfgdf-3.jpg\"><span data-alt=\"Betaetigungsarmatur, freigestellt\"><\/span><\/a><\/div><div class=\"rsContent\"><a class=\"rsImg\" data-rsw=\"591\" data-rsh=\"591\" data-rsBigImg=\"https:\/\/sab-bremen.de\/wp-content\/uploads\/2025\/01\/hgfhfgh-28.jpg\" href=\"https:\/\/sab-bremen.de\/wp-content\/uploads\/2025\/01\/hgfhfgh-28.jpg\"><span data-alt=\"Betaetigungsarmatur, freigestellt\"><\/span><\/a><\/div><\/div><img decoding=\"async\" src=\"https:\/\/sab-bremen.de\/wp-content\/uploads\/2025\/01\/gsdfdgdfgdf-3.jpg\" width=\"591\" height=\"591\" alt=\"Betaetigungsarmatur, freigestellt\" loading=\"lazy\"><\/div><div class=\"w-slider-json\" onclick='return {&quot;autoScaleSlider&quot;:true,&quot;addActiveClass&quot;:true,&quot;loop&quot;:true,&quot;fadeInLoadedSlide&quot;:false,&quot;slidesSpacing&quot;:0,&quot;imageScalePadding&quot;:0,&quot;numImagesToPreload&quot;:2,&quot;arrowsNav&quot;:true,&quot;arrowsNavAutoHide&quot;:false,&quot;transitionType&quot;:&quot;move&quot;,&quot;transitionSpeed&quot;:250,&quot;block&quot;:{&quot;moveEffect&quot;:&quot;none&quot;,&quot;speed&quot;:300},&quot;thumbs&quot;:{&quot;fitInViewport&quot;:false,&quot;firstMargin&quot;:false,&quot;spacing&quot;:4},&quot;controlNavigation&quot;:&quot;bullets&quot;,&quot;fullscreen&quot;:{&quot;enabled&quot;:true},&quot;autoScaleSliderWidth&quot;:591,&quot;autoScaleSliderHeight&quot;:591}'><\/div><\/div><\/div><\/div><div class=\"wpb_column vc_column_container\"><div class=\"vc_column-inner\"><div class=\"wpb_text_column\"><div class=\"wpb_wrapper\"><h2><span>Actuation valves<\/span><\/h2>\n<\/div><\/div><div class=\"wpb_text_column\"><div class=\"wpb_wrapper\"><p>Es gibt vier verschiedene Arten der Bet\u00e4tigung eines Notanblasesystems oder eine Kombination mehrerer von ihnen: pneumatisch mit Hochdruck, pneumatisch mit Niederdruck, elektrisch oder hydraulisch. Die Art der Bet\u00e4tigung wird vom Kunden festgelegt oder, wie meistens der Fall, vom Design Team des Kunden zusammen mit uns festgelegt.<br \/>\nUnsere Empfehlung an unsere Kunden ist eine Bet\u00e4tigung mit Druckluft oder eine eletropneumatische Bet\u00e4tigung. Ein rein elektrische\/ hydraulische Bet\u00e4tigung w\u00fcrde ein Funktionieren der Elektro \/ Hydraulikanlage zum Ausl\u00f6sen des Notanblasesystem voraussetzen und dies kann in solchen Notf\u00e4llen nicht immer gew\u00e4hrleistet werden.<br \/>\nF\u00fcr einfachere Systeme und kleinere U-Boote empfehlen wir eine pneumatische Bet\u00e4tigung.<br \/>\nF\u00fcr komplexere System oder im Falle oder im Falle der Steuerung \u00fcber das Schiffskontrollzentrum integrieren wir 3\/2 Wege Magnetventile mit manueller Notbet\u00e4tigung mit einer zus\u00e4tzlichen Notbet\u00e4tigung am Notanblaseventil. Eine Fail-Safe-Funktion und eine Totmannschaltung kann integriert werden.<\/p>\n<\/div><\/div><\/div><\/div><\/div><\/div><\/div><\/div><\/div><\/section><section class=\"l-section wpb_row us_custom_c70c97eb produktTextBlock height_medium\"><div class=\"l-section-h i-cf\"><div class=\"g-cols vc_row via_grid cols_1 laptops-cols_inherit tablets-cols_inherit mobiles-cols_1 valign_top type_default stacking_default\"><div class=\"wpb_column vc_column_container\"><div class=\"vc_column-inner\"><div class=\"g-cols wpb_row via_grid cols_2 laptops-cols_inherit tablets-cols_inherit mobiles-cols_1 valign_top type_default stacking_default\" style=\"--columns-gap:3rem;\"><div class=\"wpb_column vc_column_container\"><div class=\"vc_column-inner\"><div class=\"w-slider style_none fit_scaledown nav_dots count_2\"><div class=\"w-slider-h\" aria-hidden=\"true\"><div class=\"royalSlider\"><div class=\"rsContent\"><a class=\"rsImg\" data-rsw=\"591\" data-rsh=\"591\" data-rsBigImg=\"https:\/\/sab-bremen.de\/wp-content\/uploads\/2025\/01\/gsdfdgdfgdf-4.jpg\" href=\"https:\/\/sab-bremen.de\/wp-content\/uploads\/2025\/01\/gsdfdgdfgdf-4.jpg\"><span data-alt=\"Doppeltes Bordventil, freigestellt\"><\/span><\/a><\/div><div class=\"rsContent\"><a class=\"rsImg\" data-rsw=\"591\" data-rsh=\"591\" data-rsBigImg=\"https:\/\/sab-bremen.de\/wp-content\/uploads\/2025\/01\/hgfhfgh-29.jpg\" href=\"https:\/\/sab-bremen.de\/wp-content\/uploads\/2025\/01\/hgfhfgh-29.jpg\"><span data-alt=\"Verteiler, freigestellt vor verschwommenem Hintergrund\"><\/span><\/a><\/div><\/div><img decoding=\"async\" src=\"https:\/\/sab-bremen.de\/wp-content\/uploads\/2025\/01\/gsdfdgdfgdf-4.jpg\" width=\"591\" height=\"591\" alt=\"Doppeltes Bordventil, freigestellt\" loading=\"lazy\"><\/div><div class=\"w-slider-json\" onclick='return {&quot;autoScaleSlider&quot;:true,&quot;addActiveClass&quot;:true,&quot;loop&quot;:true,&quot;fadeInLoadedSlide&quot;:false,&quot;slidesSpacing&quot;:0,&quot;imageScalePadding&quot;:0,&quot;numImagesToPreload&quot;:2,&quot;arrowsNav&quot;:true,&quot;arrowsNavAutoHide&quot;:false,&quot;transitionType&quot;:&quot;move&quot;,&quot;transitionSpeed&quot;:250,&quot;block&quot;:{&quot;moveEffect&quot;:&quot;none&quot;,&quot;speed&quot;:300},&quot;thumbs&quot;:{&quot;fitInViewport&quot;:false,&quot;firstMargin&quot;:false,&quot;spacing&quot;:4},&quot;controlNavigation&quot;:&quot;bullets&quot;,&quot;fullscreen&quot;:{&quot;enabled&quot;:true},&quot;autoScaleSliderWidth&quot;:591,&quot;autoScaleSliderHeight&quot;:591}'><\/div><\/div><\/div><\/div><div class=\"wpb_column vc_column_container\"><div class=\"vc_column-inner\"><div class=\"wpb_text_column\"><div class=\"wpb_wrapper\"><h2><span>Components<\/span><\/h2>\n<\/div><\/div><div class=\"wpb_text_column\"><div class=\"wpb_wrapper\"><p>Hull valves are used as the connection to the cylinders, the ballast tanks and the external sea water entrance\/exit. They are of a cartridge design based on the \u201cKingston Principle\u201d which includes a non-return function if the event of damage to the valve internals. The SAB ergonomically improved hull valves are of low torque and can be manually operated. Manifolds for the connection of HP Air and LP Air to the EBS which include both valve installed manifolds and plain connection manifolds. The valve manifolds can be equipped with any SAB standard valve or filter as well as the SAB PED approved safety relief valves.<br \/>\nPressure reducing stations are designed and manufactured to the customer\u2019s requirements.<\/p>\n<\/div><\/div><\/div><\/div><\/div><\/div><\/div><\/div><\/div><\/section><section class=\"l-section wpb_row produktTextBlock height_medium\"><div class=\"l-section-h i-cf\"><div class=\"g-cols vc_row via_grid cols_1 laptops-cols_inherit tablets-cols_inherit mobiles-cols_1 valign_top type_default stacking_default\"><div class=\"wpb_column vc_column_container\"><div class=\"vc_column-inner\"><div class=\"g-cols wpb_row via_grid cols_1 laptops-cols_inherit tablets-cols_inherit mobiles-cols_1 valign_top type_default stacking_default\" style=\"--columns-gap:3rem;\"><div class=\"wpb_column vc_column_container\"><div class=\"vc_column-inner\"><div class=\"wpb_text_column\"><div class=\"wpb_wrapper\"><h2><span>Test facility<\/span><\/h2>\n<\/div><\/div><div class=\"wpb_text_column\"><div class=\"wpb_wrapper\"><p>SAB has a full in-house test facility which includes the equipment required for the complete test of the EBS. The test takes into account full strength, tightness, functional and flow tests. It operates at pressures up to 400 bar and flows higher than 50 kg\/s.<br \/>\nThe flow test facility consists of a 400 bar compressor unit, a cylinder bank allowing for 2400 litres, a tank with exchangeable throttles that simulates the MBT and a highly efficient silencer. It is monitored to save all the relevant data (flows, temperatures, pressures) electronically. The system is designed to meet all current safety regulations.<br \/>\nOur experience has enabled SAB to design, manufacture and supply full EBS testing equipment to navies and shipyards worldwide. SAB can work with any end user to design and supply on their behalf full test equipment including a water system that replicates a real emergency blow of a submarine.<\/p>\n<\/div><\/div><div class=\"w-slider style_none fit_scaledown nav_dots count_1\"><div class=\"w-slider-h\" aria-hidden=\"true\"><div class=\"royalSlider\"><div class=\"rsContent\"><a class=\"rsImg\" data-rsw=\"2560\" data-rsh=\"720\" data-rsBigImg=\"https:\/\/sab-bremen.de\/wp-content\/uploads\/2025\/01\/ttgefojg-17.jpg\" href=\"https:\/\/sab-bremen.de\/wp-content\/uploads\/2025\/01\/ttgefojg-17.jpg\"><span data-alt=\"Testanlage fuer Durchflusspruefstand, verschiedene Geraete in Halle aufgebaut\"><\/span><\/a><\/div><\/div><img decoding=\"async\" src=\"https:\/\/sab-bremen.de\/wp-content\/uploads\/2025\/01\/ttgefojg-17.jpg\" width=\"2560\" height=\"720\" alt=\"Testanlage fuer Durchflusspruefstand, verschiedene Geraete in Halle aufgebaut\" loading=\"lazy\"><\/div><div class=\"w-slider-json\" onclick='return {&quot;autoScaleSlider&quot;:true,&quot;addActiveClass&quot;:true,&quot;loop&quot;:true,&quot;fadeInLoadedSlide&quot;:false,&quot;slidesSpacing&quot;:0,&quot;imageScalePadding&quot;:0,&quot;numImagesToPreload&quot;:2,&quot;arrowsNav&quot;:true,&quot;arrowsNavAutoHide&quot;:false,&quot;transitionType&quot;:&quot;move&quot;,&quot;transitionSpeed&quot;:250,&quot;block&quot;:{&quot;moveEffect&quot;:&quot;none&quot;,&quot;speed&quot;:300},&quot;thumbs&quot;:{&quot;fitInViewport&quot;:false,&quot;firstMargin&quot;:false,&quot;spacing&quot;:4},&quot;controlNavigation&quot;:&quot;none&quot;,&quot;fullscreen&quot;:{&quot;enabled&quot;:true},&quot;autoScaleSliderWidth&quot;:2560,&quot;autoScaleSliderHeight&quot;:720}'><\/div><\/div><\/div><\/div><\/div><\/div><\/div><\/div><\/div><\/section><section class=\"l-section wpb_row produktTextBlock height_medium\"><div class=\"l-section-h i-cf\"><div class=\"g-cols vc_row via_grid cols_1 laptops-cols_inherit tablets-cols_inherit mobiles-cols_1 valign_top type_default stacking_default\"><div class=\"wpb_column vc_column_container\"><div class=\"vc_column-inner\"><div class=\"wpb_text_column\"><div class=\"wpb_wrapper\"><\/div><\/div><div class=\"g-cols wpb_row via_grid cols_2 laptops-cols_inherit tablets-cols_inherit mobiles-cols_1 valign_top type_default stacking_default\" style=\"--columns-gap:3rem;\"><div class=\"wpb_column vc_column_container\"><div class=\"vc_column-inner\"><div class=\"wpb_text_column\"><div class=\"wpb_wrapper\"><h2><span>Markets<\/span><\/h2>\n<\/div><\/div><div class=\"w-btn-wrapper align_none\"><a class=\"w-btn us-btn-style_1 icon_atright\" href=\"\/en\/markets\/navy\/emergency-deballasting\/\"><span class=\"w-btn-label\">EMERGENCY DEBALLISTING<\/span><i class=\"material-icons\">call_made<\/i><\/a><\/div><\/div><\/div><div class=\"wpb_column vc_column_container\"><div class=\"vc_column-inner\"><\/div><\/div><\/div><\/div><\/div><\/div><\/div><\/section><section class=\"l-section wpb_row height_medium color_alternate\" id=\"Ansprech_Kont\"><div class=\"l-section-h i-cf\"><div class=\"g-cols vc_row via_grid cols_1 laptops-cols_inherit tablets-cols_inherit mobiles-cols_1 valign_top type_default stacking_default\"><div class=\"wpb_column vc_column_container\"><div class=\"vc_column-inner\"><div class=\"w-hwrapper us_custom_bf618a18 valign_top stack_on_mobiles align_justify\" style=\"--hwrapper-gap:0.4rem\"><div class=\"w-vwrapper us_custom_26c43283 align_left valign_top\" style=\"--vwrapper-gap:0.5rem\"><div class=\"wpb_text_column us_custom_836f727b has_text_color\"><div class=\"wpb_wrapper\"><h2>Do you have any further questions?<\/h2>\n<\/div><\/div><div class=\"wpb_text_column us_custom_836f727b has_text_color\"><div class=\"wpb_wrapper\"><p>Our team is always available to answer your questions quickly and easily.<\/p>\n<\/div><\/div><\/div><div class=\"w-vwrapper us_custom_0601bf3b align_left valign_top\" style=\"--vwrapper-gap:0.50rem\"><div class='contacts-container'><div class='contact-card'><img loading=\"lazy\" decoding=\"async\" width=\"150\" height=\"150\" src=\"https:\/\/sab-bremen.de\/wp-content\/uploads\/2025\/02\/kmenq5dc-14.jpg\" class=\"attachment-thumbnail size-thumbnail\" alt=\"Foto von Vanessa Tietje\" \/><div class='Mail_Phone'><p><b>Vanessa Tietje<\/b><br><i class='fal fa-phone-alt'><\/i>&nbsp;<a href='TEL:+49 421-55909-33'>+49 421-55909-33<\/a><br><i class='fal fa-envelope'><\/i>&nbsp;<a href='mailto:tietje@sab-bremen.de'>tietje@sab-bremen.de<\/a><\/p><\/div><\/div><div class='contact-card'><img loading=\"lazy\" decoding=\"async\" width=\"150\" height=\"150\" src=\"https:\/\/sab-bremen.de\/wp-content\/uploads\/2025\/02\/kmenq5dc-16.jpg\" class=\"attachment-thumbnail size-thumbnail\" alt=\"Foto von Christian Viertel\" \/><div class='Mail_Phone'><p><b>Christian Viertel<\/b><br><i class='fal fa-phone-alt'><\/i>&nbsp;<a href='TEL:+49 421-55909-0'>+49 421-55909-0<\/a><br><i class='fal fa-envelope'><\/i>&nbsp;<a href='mailto:viertel@sab-bremen.de'>viertel@sab-bremen.de<\/a><\/p><\/div><\/div><div class='contact-card'><img loading=\"lazy\" decoding=\"async\" width=\"150\" height=\"150\" src=\"https:\/\/sab-bremen.de\/wp-content\/uploads\/2025\/01\/kmenq5dc-15-150x150.jpg\" class=\"attachment-thumbnail size-thumbnail\" alt=\"Foto von Daniel Nagel\" \/><div class='Mail_Phone'><p><b>Daniel Nagel<\/b><br><i class='fal fa-phone-alt'><\/i>&nbsp;<a href='TEL:+49 421-55909-24'>+49 421-55909-24<\/a><br><i class='fal fa-envelope'><\/i>&nbsp;<a href='mailto:nagel@sab-bremen.de'>nagel@sab-bremen.de<\/a><\/p><\/div><\/div><\/div>[vc_raw_html]JTNDZGl2JTIwY2xhc3MlM0QlMjJjb250YWN0LWJ1dHRvbiUyMiUzRSUwQSUyMCUyMCUyMCUyMCUzQ2ElMjBocmVmJTNEJTIyJTIzQW5zcHJlY2hfS29udCUyMiUzRSUzQ2ltZyUyMHNyYyUzRCUyMmh0dHBzJTNBJTJGJTJGc2FiLWJyZW1lbi5wbGlldHNjaC1kZXYuZGUlMkZ3cC1jb250ZW50JTJGdXBsb2FkcyUyRjIwMjUlMkYwMSUyRm1haWwuc3ZnJTIyJTIwc3R5bGUlM0QlMjJib3JkZXItcmFkaXVzJTNBMHB4JTIwJTIxaW1wb3J0YW50JTNCJTIyJTNFJTNDJTJGYSUzRSUwQSUzQyUyRmRpdiUzRQ==[\/vc_raw_html]<\/div><\/div><\/div><\/div><\/div><\/div><\/section><!-- Row Backgrounds --><div class=\"upb_grad\" data-grad=\"background: -webkit-gradient(linear, left top, left bottom, color-stop(0%, #FFFFFF), color-stop(60%, #FFFFFF), color-stop(60%, #ECF6F6), color-stop(100%, #ECF6F6));background: -moz-linear-gradient(top,#FFFFFF 0%,#FFFFFF 60%,#ECF6F6 60%,#ECF6F6 100%);background: -webkit-linear-gradient(top,#FFFFFF 0%,#FFFFFF 60%,#ECF6F6 60%,#ECF6F6 100%);background: -o-linear-gradient(top,#FFFFFF 0%,#FFFFFF 60%,#ECF6F6 60%,#ECF6F6 100%);background: -ms-linear-gradient(top,#FFFFFF 0%,#FFFFFF 60%,#ECF6F6 60%,#ECF6F6 100%);background: linear-gradient(top,#FFFFFF 0%,#FFFFFF 60%,#ECF6F6 60%,#ECF6F6 100%);\" data-bg-override=\"0\" data-upb-overlay-color=\"\" data-upb-bg-animation=\"\" data-fadeout=\"\" data-fadeout-percentage=\"30\" data-parallax-content=\"\" data-parallax-content-sense=\"30\" data-row-effect-mobile-disable=\"true\" data-img-parallax-mobile-disable=\"true\" data-rtl=\"false\"  data-custom-vc-row=\"\"  data-vc=\"8.7.2\"  data-is_old_vc=\"\"  data-theme-support=\"\"   data-overlay=\"false\" data-overlay-color=\"\" data-overlay-pattern=\"\" data-overlay-pattern-opacity=\"\" data-overlay-pattern-size=\"\"    ><\/div>\n\n","protected":false},"excerpt":{"rendered":"HomePages Emergency Blow Systems Based on customer\u2019s specification we develop a system that fully achieves the flow and pressure requirements, we build it in our own workshop and test it in our unique test facility. SAB has for decades developed and in use different Emergency De-Ballasting Systems on submarines. Based on our experience we are...","protected":false},"author":1,"featured_media":0,"parent":3056,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_acf_changed":false,"inline_featured_image":false,"footnotes":""},"class_list":["post-3654","page","type-page","status-publish","hentry"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.2 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Valves | Emergency Blow Systems<\/title>\n<meta name=\"description\" content=\"We develop and oversee emergency blow systems which are implemented on submarines all around the world.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/sab-bremen.de\/en\/fittings\/systems\/emergency-blow-systems\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta 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