{"id":13289,"date":"2021-05-21T12:12:04","date_gmt":"2021-05-21T10:12:04","guid":{"rendered":"https:\/\/biogastechnik-sued.de\/home\/products\/biosecure-overpressure-and-underpressure-protection\/"},"modified":"2025-07-28T14:53:19","modified_gmt":"2025-07-28T12:53:19","slug":"biosecure-overpressure-and-underpressure-protection","status":"publish","type":"page","link":"https:\/\/biogastechnik-sued.de\/en\/home\/products\/biosecure-overpressure-and-underpressure-protection\/","title":{"rendered":"Biosecure overpressure and underpressure protection"},"content":{"rendered":"\t\t<div data-elementor-type=\"wp-page\" data-elementor-id=\"13289\" class=\"elementor elementor-13289 elementor-4309\" data-elementor-post-type=\"page\">\n\t\t\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-e160972 elementor-section-content-middle elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"e160972\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-no\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-50 elementor-top-column elementor-element elementor-element-19602117\" data-id=\"19602117\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-7d44c8b8 elementor-widget elementor-widget-heading\" data-id=\"7d44c8b8\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h5 class=\"elementor-heading-title elementor-size-default\">OPTIMISED &amp; USER FRIENDLY SOLUTIONS<\/h5>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-1c5317d elementor-widget elementor-widget-heading\" data-id=\"1c5317d\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h1 class=\"elementor-heading-title elementor-size-default\">Biosecure<\/h1>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-6c0e90d0 elementor-widget elementor-widget-heading\" data-id=\"6c0e90d0\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Overpressure and underpressure protection<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-6a013bdb elementor-widget elementor-widget-text-editor\" data-id=\"6a013bdb\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>To make biogas plant operation as safe as possible, we have designed and built our Biosecure overpressure\/underpressure protection system in accordance with the most stringent safety requirements and after careful selection of the relevant harmonised standards and other technical specifications. Thus, it meets the current state of the art and guarantees a maximum level of safety.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-4e783955 elementor-widget elementor-widget-text-editor\" data-id=\"4e783955\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>The Biosecure can either be controlled mechanically through a biogas storage membrane or using weight-operated immersion cups. The Biosecure housing is made of stainless steel; the immersion cups and the steering linkage are plastic. We use water as sealing liquid to which antifreeze is added at low outside temperatures. As an option, an insulating jacket or an electric heating rod can be installed to prevent the water from freezing when no antifreeze is added. The functioning inside the housing can be checked through the built-in sight glass.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t<div class=\"elementor-column elementor-col-50 elementor-top-column elementor-element elementor-element-43c2a6a2\" data-id=\"43c2a6a2\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t<div class=\"elementor-background-overlay\"><\/div>\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-59a9fc6 elementor-widget elementor-widget-image\" data-id=\"59a9fc6\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img decoding=\"async\" src=\"https:\/\/biogastechnik-sued.de\/wp-content\/uploads\/2020\/03\/ST-DS_Detail2_CMYK_300dpi-scaled.jpg\" title=\"\" alt=\"\" loading=\"lazy\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-40dbaea elementor-hidden-tablet elementor-hidden-phone elementor-widget elementor-widget-image\" data-id=\"40dbaea\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img decoding=\"async\" src=\"https:\/\/biogastechnik-sued.de\/wp-content\/uploads\/2020\/03\/190_665x1000_02_Ueberdrucksicherung_Bioguard_II_300dpi_CMYK.jpg\" title=\"\" alt=\"\" loading=\"lazy\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-082572e elementor-widget elementor-widget-image\" data-id=\"082572e\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img fetchpriority=\"high\" decoding=\"async\" data-attachment-id=\"14689\" data-permalink=\"https:\/\/biogastechnik-sued.de\/en\/btsued\/01_btsued_bd_001_biosecure_2010-09-16\/\" data-orig-file=\"https:\/\/biogastechnik-sued.de\/wp-content\/uploads\/2021\/10\/01_BTSUED_BD_001_Biosecure_2010-09-16.jpg\" data-orig-size=\"1024,685\" data-comments-opened=\"1\" data-image-meta=\"{&quot;aperture&quot;:&quot;0&quot;,&quot;credit&quot;:&quot;&quot;,&quot;camera&quot;:&quot;&quot;,&quot;caption&quot;:&quot;&quot;,&quot;created_timestamp&quot;:&quot;0&quot;,&quot;copyright&quot;:&quot;&quot;,&quot;focal_length&quot;:&quot;0&quot;,&quot;iso&quot;:&quot;0&quot;,&quot;shutter_speed&quot;:&quot;0&quot;,&quot;title&quot;:&quot;&quot;,&quot;orientation&quot;:&quot;0&quot;}\" data-image-title=\"01_BTSUED_BD_001_Biosecure_2010-09-16\" data-image-description=\"\" data-image-caption=\"\" data-medium-file=\"https:\/\/biogastechnik-sued.de\/wp-content\/uploads\/2021\/10\/01_BTSUED_BD_001_Biosecure_2010-09-16-300x201.jpg\" data-large-file=\"https:\/\/biogastechnik-sued.de\/wp-content\/uploads\/2021\/10\/01_BTSUED_BD_001_Biosecure_2010-09-16.jpg\" width=\"800\" height=\"535\" src=\"https:\/\/biogastechnik-sued.de\/wp-content\/uploads\/2021\/10\/01_BTSUED_BD_001_Biosecure_2010-09-16.jpg\" class=\"attachment-large size-large wp-image-14689\" alt=\"\" srcset=\"https:\/\/biogastechnik-sued.de\/wp-content\/uploads\/2021\/10\/01_BTSUED_BD_001_Biosecure_2010-09-16.jpg 1024w, https:\/\/biogastechnik-sued.de\/wp-content\/uploads\/2021\/10\/01_BTSUED_BD_001_Biosecure_2010-09-16-300x201.jpg 300w, https:\/\/biogastechnik-sued.de\/wp-content\/uploads\/2021\/10\/01_BTSUED_BD_001_Biosecure_2010-09-16-768x514.jpg 768w\" sizes=\"(max-width: 800px) 100vw, 800px\" data-attachment-id=\"14689\" data-permalink=\"https:\/\/biogastechnik-sued.de\/en\/btsued\/01_btsued_bd_001_biosecure_2010-09-16\/\" data-orig-file=\"https:\/\/biogastechnik-sued.de\/wp-content\/uploads\/2021\/10\/01_BTSUED_BD_001_Biosecure_2010-09-16.jpg\" data-orig-size=\"1024,685\" data-comments-opened=\"1\" data-image-meta=\"{&quot;aperture&quot;:&quot;0&quot;,&quot;credit&quot;:&quot;&quot;,&quot;camera&quot;:&quot;&quot;,&quot;caption&quot;:&quot;&quot;,&quot;created_timestamp&quot;:&quot;0&quot;,&quot;copyright&quot;:&quot;&quot;,&quot;focal_length&quot;:&quot;0&quot;,&quot;iso&quot;:&quot;0&quot;,&quot;shutter_speed&quot;:&quot;0&quot;,&quot;title&quot;:&quot;&quot;,&quot;orientation&quot;:&quot;0&quot;}\" data-image-title=\"01_BTSUED_BD_001_Biosecure_2010-09-16\" data-image-description=\"\" data-image-caption=\"\" data-medium-file=\"https:\/\/biogastechnik-sued.de\/wp-content\/uploads\/2021\/10\/01_BTSUED_BD_001_Biosecure_2010-09-16-300x201.jpg\" data-large-file=\"https:\/\/biogastechnik-sued.de\/wp-content\/uploads\/2021\/10\/01_BTSUED_BD_001_Biosecure_2010-09-16.jpg\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-afa0be5 elementor-widget elementor-widget-text-editor\" data-id=\"afa0be5\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<h3>\u00dcber- und Unterdrucksicherung Funktionsweise<\/h3><p>The Biosecure overpressure\/underpressure protection monitors and regulates the positive and negative pressure in biogas digesters. It protects the biogas storage membranes of fermenters, secondary fermenters and fermentation residue storage facilities from impermissible loads.<br>The Biosecure has been designed as a safety component in accordance with the Machinery Directive 2006\/42\/EC.<\/p><p>However, the safety we intent to achieve when operating a biogas plant can only be accomplished in practice if all necessary measures are taken. It falls within the operator&#8217;s duty of care to support these measures and to check their execution.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-65439a14 elementor-section-content-bottom elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"65439a14\" data-element_type=\"section\" data-e-type=\"section\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;}\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-no\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-33 elementor-top-column elementor-element elementor-element-6eeec56f\" data-id=\"6eeec56f\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-25ce6a1a elementor-hidden-tablet elementor-widget elementor-widget-image\" data-id=\"25ce6a1a\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img decoding=\"async\" data-attachment-id=\"12785\" data-permalink=\"https:\/\/biogastechnik-sued.de\/en\/home\/st-ds_vektorisiert-2-2\/\" data-orig-file=\"https:\/\/biogastechnik-sued.de\/wp-content\/uploads\/2020\/03\/ST-DS_vektorisiert-1.png\" data-orig-size=\"2480,1772\" data-comments-opened=\"1\" data-image-meta=\"{&quot;aperture&quot;:&quot;0&quot;,&quot;credit&quot;:&quot;&quot;,&quot;camera&quot;:&quot;&quot;,&quot;caption&quot;:&quot;&quot;,&quot;created_timestamp&quot;:&quot;0&quot;,&quot;copyright&quot;:&quot;&quot;,&quot;focal_length&quot;:&quot;0&quot;,&quot;iso&quot;:&quot;0&quot;,&quot;shutter_speed&quot;:&quot;0&quot;,&quot;title&quot;:&quot;&quot;,&quot;orientation&quot;:&quot;0&quot;}\" data-image-title=\"ST-DS_vektorisiert\" data-image-description=\"\" data-image-caption=\"\" data-medium-file=\"https:\/\/biogastechnik-sued.de\/wp-content\/uploads\/2020\/03\/ST-DS_vektorisiert-1-300x214.png\" data-large-file=\"https:\/\/biogastechnik-sued.de\/wp-content\/uploads\/2020\/03\/ST-DS_vektorisiert-1-1024x732.png\" width=\"800\" height=\"572\" src=\"https:\/\/biogastechnik-sued.de\/wp-content\/uploads\/2020\/03\/ST-DS_vektorisiert-1-1024x732.png\" class=\"attachment-large size-large wp-image-12785\" alt=\"Biosecure overpressure and underpressure protection for biogas plants\" srcset=\"https:\/\/biogastechnik-sued.de\/wp-content\/uploads\/2020\/03\/ST-DS_vektorisiert-1-1024x732.png 1024w, https:\/\/biogastechnik-sued.de\/wp-content\/uploads\/2020\/03\/ST-DS_vektorisiert-1-300x214.png 300w, https:\/\/biogastechnik-sued.de\/wp-content\/uploads\/2020\/03\/ST-DS_vektorisiert-1-768x549.png 768w, https:\/\/biogastechnik-sued.de\/wp-content\/uploads\/2020\/03\/ST-DS_vektorisiert-1-1536x1097.png 1536w, https:\/\/biogastechnik-sued.de\/wp-content\/uploads\/2020\/03\/ST-DS_vektorisiert-1-2048x1463.png 2048w\" sizes=\"(max-width: 800px) 100vw, 800px\" data-attachment-id=\"12785\" data-permalink=\"https:\/\/biogastechnik-sued.de\/en\/home\/st-ds_vektorisiert-2-2\/\" data-orig-file=\"https:\/\/biogastechnik-sued.de\/wp-content\/uploads\/2020\/03\/ST-DS_vektorisiert-1.png\" data-orig-size=\"2480,1772\" data-comments-opened=\"1\" data-image-meta=\"{&quot;aperture&quot;:&quot;0&quot;,&quot;credit&quot;:&quot;&quot;,&quot;camera&quot;:&quot;&quot;,&quot;caption&quot;:&quot;&quot;,&quot;created_timestamp&quot;:&quot;0&quot;,&quot;copyright&quot;:&quot;&quot;,&quot;focal_length&quot;:&quot;0&quot;,&quot;iso&quot;:&quot;0&quot;,&quot;shutter_speed&quot;:&quot;0&quot;,&quot;title&quot;:&quot;&quot;,&quot;orientation&quot;:&quot;0&quot;}\" data-image-title=\"ST-DS_vektorisiert\" data-image-description=\"\" data-image-caption=\"\" data-medium-file=\"https:\/\/biogastechnik-sued.de\/wp-content\/uploads\/2020\/03\/ST-DS_vektorisiert-1-300x214.png\" data-large-file=\"https:\/\/biogastechnik-sued.de\/wp-content\/uploads\/2020\/03\/ST-DS_vektorisiert-1-1024x732.png\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t<div class=\"elementor-column elementor-col-66 elementor-top-column elementor-element elementor-element-7eb13a5\" data-id=\"7eb13a5\" data-element_type=\"column\" data-e-type=\"column\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;}\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-7935f1bf elementor-widget elementor-widget-heading\" data-id=\"7935f1bf\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">ADVANTAGES OF THE OVERPRESSURE\/UNDERPRESSURE PROTECTION<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-e7ae076 elementor-widget elementor-widget-heading\" data-id=\"e7ae076\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">Biosecure<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-249d7fdc elementor-widget elementor-widget-text-editor\" data-id=\"249d7fdc\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<ul><li>reliable overpressure protection: functions either pneumatically (under-overpressure) or controlled mechanically (e.g. gas bag)<\/li><li>in connection with the insulating jacket, no antifreeze necessary as barrier liquid down to -20 \u00b0C<\/li><li>no replenishing of the barrier liquid necessary<\/li><li>auto-regulation of fill levels<\/li><li>excess condensate drains into the digester<\/li><li>maintenance-free<\/li><li>a heating rod optionally available<\/li><li>includes a pressure test port<\/li><li>includes a pressure sensor terminal<\/li><\/ul>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-91e40d9 elementor-section-content-bottom elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"91e40d9\" data-element_type=\"section\" data-e-type=\"section\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;}\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-no\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-41da0f1\" data-id=\"41da0f1\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-afb7d4f elementor-widget elementor-widget-heading\" data-id=\"afb7d4f\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h4 class=\"elementor-heading-title elementor-size-default\">Extension option for overpressure and underpressure protection<\/h4>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<section class=\"elementor-section elementor-inner-section elementor-element elementor-element-ddbbea6 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"ddbbea6\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-inner-column elementor-element elementor-element-4dab287\" data-id=\"4dab287\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-c98746b elementor-view-stacked elementor-position-inline-start elementor-shape-circle elementor-mobile-position-block-start elementor-widget elementor-widget-icon-box\" data-id=\"c98746b\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"icon-box.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-icon-box-wrapper\">\n\n\t\t\t\t\t\t<div class=\"elementor-icon-box-icon\">\n\t\t\t\t<span  class=\"elementor-icon\">\n\t\t\t\t<i aria-hidden=\"true\" class=\"fas fa-plus-circle\"><\/i>\t\t\t\t<\/span>\n\t\t\t<\/div>\n\t\t\t\n\t\t\t\t\t\t<div class=\"elementor-icon-box-content\">\n\n\t\t\t\t\t\t\t\t\t<h3 class=\"elementor-icon-box-title\">\n\t\t\t\t\t\t<span  >\n\t\t\t\t\t\t\tAccessories (optional)\t\t\t\t\t\t<\/span>\n\t\t\t\t\t<\/h3>\n\t\t\t\t\n\t\t\t\t\t\t\t\t\t<p class=\"elementor-icon-box-description\">\n\t\t\t\t\t\t- Pipe connection set for substrate pipes<br>- Pipe connection set for heating\t\t\t\t\t<\/p>\n\t\t\t\t\n\t\t\t<\/div>\n\t\t\t\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-c069bfd elementor-section-content-middle elementor-hidden-desktop elementor-hidden-tablet elementor-hidden-phone elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"c069bfd\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-no\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-dca749a\" data-id=\"dca749a\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-cfe685a elementor-widget elementor-widget-heading\" data-id=\"cfe685a\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">FREQUENTLY ASKED QUESTIONS<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-a81d937 elementor-widget elementor-widget-heading\" data-id=\"a81d937\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h5 class=\"elementor-heading-title elementor-size-default\">Frequently asked questions and answers<\/h5>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<section class=\"elementor-section elementor-inner-section elementor-element elementor-element-8b5cbdd elementor-section-content-top elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"8b5cbdd\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-no\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-50 elementor-inner-column elementor-element elementor-element-c738adc\" data-id=\"c738adc\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-c9462d0 elementor-widget elementor-widget-heading\" data-id=\"c9462d0\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h4 class=\"elementor-heading-title elementor-size-default\">Biogas flows out over a longer period of time even though the traction cable is not tensioned<\/h4>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-3317387 elementor-widget elementor-widget-text-editor\" data-id=\"3317387\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p><strong>Pressure\/vacuum bell does not close<\/strong><\/p><p>&#8211; Check sealing liquid level; top up if necessary.<br>&#8211; Check for soiling, flush if necessary (lower flush connection).<br>&#8211; Check overpressure\/vacuum bell for free movement.<br>&#8211; Check deflection linkage for free movement.<br>&#8211; Check for icing during winter operation<br>&#8211; Otherwise notify customer service.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t<div class=\"elementor-column elementor-col-50 elementor-inner-column elementor-element elementor-element-9df73ec\" data-id=\"9df73ec\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-7d4267a elementor-widget elementor-widget-heading\" data-id=\"7d4267a\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h4 class=\"elementor-heading-title elementor-size-default\">Biogas storage membrane is stretched too much<\/h4>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-daac8e7 elementor-widget elementor-widget-text-editor\" data-id=\"daac8e7\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p><strong>Biosecure does not respond<\/strong><\/p><p>&#8211; Check ropes for correct length.<br>&#8211; Check deflection linkage.<br>&#8211; Check the overpressure bell for free movement.<br>&#8211; Check for icing during winter operation.<br>&#8211; Otherwise contact customer service.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-2e71adbb elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"2e71adbb\" data-element_type=\"section\" data-e-type=\"section\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;}\">\n\t\t\t\t\t\t\t<div class=\"elementor-background-overlay\"><\/div>\n\t\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-11f3bd92\" data-id=\"11f3bd92\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-16ef094c elementor-widget elementor-widget-heading\" data-id=\"16ef094c\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Do you need more information about overpressure and underpressure protection?<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-c52efb8 elementor-widget elementor-widget-heading\" data-id=\"c52efb8\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Download technical information here or call us!<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<section class=\"elementor-section elementor-inner-section elementor-element elementor-element-6bea1193 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"6bea1193\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-50 elementor-inner-column elementor-element elementor-element-49eaf76c\" data-id=\"49eaf76c\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-ab3ac85 elementor-align-center elementor-widget elementor-widget-button\" data-id=\"ab3ac85\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"button.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<div class=\"elementor-button-wrapper\">\n\t\t\t\t\t<a class=\"elementor-button elementor-button-link elementor-size-lg\" href=\"https:\/\/biogastechnik-sued.de\/en\/home\/download-center\/\">\n\t\t\t\t\t\t<span class=\"elementor-button-content-wrapper\">\n\t\t\t\t\t\t<span class=\"elementor-button-icon\">\n\t\t\t\t<i aria-hidden=\"true\" class=\"fas fa-angle-double-right\"><\/i>\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t<span class=\"elementor-button-text\">Download<\/span>\n\t\t\t\t\t<\/span>\n\t\t\t\t\t<\/a>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t<div 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fa-angle-double-right\"><\/i>\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t<span class=\"elementor-button-text\">SALES<\/span>\n\t\t\t\t\t<\/span>\n\t\t\t\t\t<\/a>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-61bbf7e elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"61bbf7e\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-72ab62c\" data-id=\"72ab62c\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div 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Thus, it meets the current [&hellip;]<\/p>\n","protected":false},"author":154380550,"featured_media":12785,"parent":13260,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_acf_changed":false,"footnotes":""},"class_list":["post-13289","page","type-page","status-publish","has-post-thumbnail","hentry"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.0 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Biosecure overpressure and underpressure protection - Biogastechnik S\u00fcd GmbH<\/title>\n<meta name=\"description\" content=\"The Biosecure type ST-DS overpressure and underpressure protection monitors and regulates the overpressure and underpressure in the fermenter of a biogas plant.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/biogastechnik-sued.de\/en\/home\/products\/biosecure-overpressure-and-underpressure-protection\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Biosecure overpressure and underpressure protection - 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