{"id":10323,"date":"2018-07-10T16:59:37","date_gmt":"2018-07-10T14:59:37","guid":{"rendered":"https:\/\/www.kromschroeder.de\/process-heat\/products\/kromschroeder-system-technology\/gas-systems\/standards\/en-746-22010\/5-2-gaseous-fuels\/5-2-4-supply-of-pre-mixed-fuel-gas-air\/5-2-4-1-mixture-pipework\/"},"modified":"2018-07-27T19:54:55","modified_gmt":"2018-07-27T17:54:55","slug":"5-2-4-1-mixture-pipework","status":"publish","type":"page","link":"https:\/\/www.kromschroeder.de\/en\/kromschroeder-system-technology\/gas-systems\/standards\/en-746-22010\/5-2-gaseous-fuels\/5-2-4-supply-of-pre-mixed-fuel-gas-air\/5-2-4-1-mixture-pipework\/","title":{"rendered":"5.2.4.1 Mixture pipework"},"content":{"rendered":"<p>[et_pb_section bb_built=&#8221;1&#8243; fullwidth=&#8221;on&#8221; specialty=&#8221;off&#8221; _builder_version=&#8221;3.0.89&#8243; next_background_color=&#8221;#000000&#8243; global_module=&#8221;3071&#8243;][et_pb_fullwidth_menu global_parent=&#8221;3071&#8243; _builder_version=&#8221;3.0.89&#8243; 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_builder_version=&#8221;3.0.60&#8243; custom_padding=&#8221;0px||0px|&#8221; next_background_color=&#8221;#f1f1f1&#8243; prev_background_color=&#8221;#000000&#8243; global_module=&#8221;1488&#8243;][et_pb_row global_parent=&#8221;1488&#8243; custom_padding=&#8221;0px||0px|&#8221; background_position_1=&#8221;top_left&#8221; background_repeat_1=&#8221;no-repeat&#8221; _builder_version=&#8221;3.0.60&#8243; background_size=&#8221;initial&#8221; background_position=&#8221;top_left&#8221; background_repeat=&#8221;repeat&#8221;][et_pb_column type=&#8221;4_4&#8243;][et_pb_dmb_breadcrumbs global_parent=&#8221;1488&#8243; font_icon=&#8221;%%36%%&#8221; _builder_version=&#8221;3.0.89&#8243; body_font_size=&#8221;11px&#8221; body_text_color=&#8221;#666666&#8243; link_text_color=&#8221;#666666&#8243;]<\/p>\n<div class=\"et_pb_module  et_pb_dmb_breadcrumbs_1 et_pb_dmb_breadcrumbs\" style=\"visibility: hidden;\">\n<ol>\n<li><a href=\"https:\/\/www.kromschroeder.de\">Startseite<\/a><\/li>\n<\/ol>\n<\/div>\n<p>[\/et_pb_dmb_breadcrumbs][\/et_pb_column][\/et_pb_row][\/et_pb_section][et_pb_section bb_built=&#8221;1&#8243; background_color=&#8221;#f1f1f1&#8243; disabled_on=&#8221;off|off|&#8221; _builder_version=&#8221;3.0.89&#8243; custom_padding=&#8221;17px|0px|7px|0px&#8221; prev_background_color=&#8221;#ffffff&#8221; next_background_color=&#8221;#ffffff&#8221;][et_pb_row custom_padding=&#8221;0px||0px|&#8221; custom_margin=&#8221;0px||0px|&#8221; background_position_1=&#8221;top_left&#8221; background_repeat_1=&#8221;no-repeat&#8221; _builder_version=&#8221;3.0.89&#8243;][et_pb_column type=&#8221;4_4&#8243;][et_pb_text _builder_version=&#8221;3.8.1&#8243; module_alignment=&#8221;left&#8221; border_style=&#8221;solid&#8221;]<\/p>\n<h1 class=\"csc-firstHeader\">KST &#8211; KROMSCHR\u00d6DER SYSTEM TECHNOLOGY<\/h1>\n<p>[\/et_pb_text][\/et_pb_column][\/et_pb_row][\/et_pb_section][et_pb_section bb_built=&#8221;1&#8243; _builder_version=&#8221;3.0.47&#8243; custom_padding=&#8221;21px|0px|54px|0px&#8221; prev_background_color=&#8221;#f1f1f1&#8243;][et_pb_row background_color=&#8221;#f1f1f1&#8243; background_color_1=&#8221;#f1f1f1&#8243; background_position_1=&#8221;top_left&#8221; background_position_2=&#8221;top_left&#8221; background_repeat_1=&#8221;no-repeat&#8221; background_repeat_2=&#8221;no-repeat&#8221; _builder_version=&#8221;3.0.89&#8243; use_custom_gutter=&#8221;on&#8221; gutter_width=&#8221;1&#8243;][et_pb_column type=&#8221;1_4&#8243;][et_pb_text admin_label=&#8221;docuthek monitor&#8221; _builder_version=&#8221;3.0.89&#8243; background_color=&#8221;#ffffff&#8221; custom_margin=&#8221;|10px||10px&#8221; custom_padding=&#8221;10px|10px|10px|10px&#8221; border_style=&#8221;solid&#8221; global_module=&#8221;1818&#8243; saved_tabs=&#8221;all&#8221; background_layout=&#8221;light&#8221; disabled_on=&#8221;on|on|&#8221; disabled=&#8221;off&#8221; border_style_all=&#8221;solid&#8221;]<\/p>\n<p><strong>DOCUTHEK<br \/>\n<\/strong><\/p>\n<p>You can find all documents here.<\/p>\n<form action=\" https:\/\/docuthek.kromschroeder.com\/documents\/index.php?lang=en&amp;menuid=31&amp;topmenu=31\" method=\"post\" target=\"blank\"><input name=\"searchvalue\" type=\"text\" value=\"\" placeholder=\"Search term\" \/><\/form>\n<p>&nbsp;<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-1820 alignnone\" src=\"https:\/\/b2fvdlvy.myraidbox.de\/wp-content\/uploads\/2017\/06\/dokulogo.gif\" alt=\"\" width=\"30\" height=\"30\" \/> <a href=\"https:\/\/docuthek.kromschroeder.com\/documents\/index.php?menuid=31&amp;topmenu=31?lang=en&amp;folder=1\" target=\"_blank\" rel=\"noopener\">docuthek.com<\/a><\/p>\n<p>[\/et_pb_text][\/et_pb_column][et_pb_column type=&#8221;1_2&#8243;][et_pb_text _builder_version=&#8221;3.10&#8243;]<\/p>\n<p><a href=\"https:\/\/www.kromschroeder.de\/en\/kromschroeder-system-technology\/gas-systems\/standards\/en-746-22010\/5-2-gaseous-fuels\/5-2-4-supply-of-pre-mixed-fuel-gas-air\/\">overview<\/a><\/p>\n<p>&nbsp;<\/p>\n<p>[\/et_pb_text][et_pb_text _builder_version=&#8221;3.8.1&#8243; module_alignment=&#8221;left&#8221; custom_padding=&#8221;0px|10px|10px|10px&#8221; border_style=&#8221;solid&#8221; header_line_height=&#8221;1.4em&#8221; header_line_height_last_edited=&#8221;on|desktop&#8221; header_font_size_last_edited=&#8221;on|phone&#8221; header_font_size_tablet=&#8221;25px&#8221; header_font_size_phone=&#8221;20px&#8221;]<\/p>\n<h1>5.2.4.1 Mixture pipework<\/h1>\n<p>The mixture pipework volume shall be as small as possible. The system shall be designed so as to provide a sufficiently high mixture flow velocity such that flame propagation upstream cannot occur, or shall be fitted with a flame trap\/arrestor or pressure relief devices.<\/p>\n<p><span class=\"blau\">Alternatively, the system shall be fitted with a sensor which causes lock-out in the event of the flow velocity falling below a pre-determined limit or a temperature sensor which causes lock-out in the event of flash-back (see 3.48).<sup>1)<\/sup><\/span><\/p>\n<p>These devices are not required for burners where the manufacturer can demonstrate that flash-back cannot occur in any circumstances (e.g. pilot burners with their own mixing devices).<\/p>\n<p>&nbsp;<\/p>\n<div class=\"csc-textpic csc-textpic-intext-right\">\n<div class=\"csc-textpic-text\">\n<div id=\"c446\" class=\"csc-default\">\n<div id=\"c444\" class=\"csc-frame csc-frame-frame1\">\n<hr \/>\n<p>The following chapters are printed with the permission of the DIN Deutsches Institut f\u00fcr Normung e.V. (German Institute for Standardization). For the implementation of the DIN Standard, the version with the most recent issue date is deemed authoritative. This is available from Beuth Verlag GmbH, Burggrafenstrasse 6, 10787 Berlin, Germany.<\/p>\n<p><em>\u00a0<\/em><\/p>\n<p>&nbsp;<\/p>\n<div id=\"c710\" class=\"csc-frame csc-frame-frame1\">\n<p class=\"newsbox\"><em><img loading=\"lazy\" decoding=\"async\" class=\"alignleft size-full wp-image-9778\" src=\"https:\/\/www.kromschroeder.de\/wp-content\/uploads\/2018\/07\/birne-f2.jpg\" alt=\"\" width=\"40\" height=\"40\" \/><\/em><\/p>\n<p class=\"newsbox\"><em>Our note on this Standard:<\/em><\/p>\n<p class=\"newsbox\"><em><br \/>\n<\/em><span style=\"color: #0000ff;\">1) The flow velocity in the air circuit can be detected using a differential pressure switch. An adequate air flow rate also ensures a corresponding flow velocity in the mixture pipe.<\/span><\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignleft wp-image-9701 size-full\" src=\"https:\/\/www.kromschroeder.de\/wp-content\/uploads\/2018\/07\/Gemischueberwachung_01.png\" alt=\"\" width=\"382\" height=\"361\" srcset=\"https:\/\/www.kromschroeder.de\/wp-content\/uploads\/2018\/07\/Gemischueberwachung_01.png 382w, https:\/\/www.kromschroeder.de\/wp-content\/uploads\/2018\/07\/Gemischueberwachung_01-300x284.png 300w\" sizes=\"(max-width: 382px) 100vw, 382px\" \/><\/p>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<p>[\/et_pb_text][\/et_pb_column][et_pb_column type=&#8221;1_4&#8243;][et_pb_text admin_label=&#8221;docuthek tablet smart&#8221; _builder_version=&#8221;3.0.89&#8243; background_color=&#8221;#ffffff&#8221; custom_margin=&#8221;|10px||10px&#8221; custom_padding=&#8221;10px|10px|10px|10px&#8221; border_style=&#8221;solid&#8221; saved_tabs=&#8221;all&#8221; background_layout=&#8221;light&#8221; disabled_on=&#8221;off|off|on&#8221; disabled=&#8221;off&#8221; global_module=&#8221;2077&#8243; border_style_all=&#8221;solid&#8221;]<\/p>\n<p><strong>DOCUTHEK<br \/>\n<\/strong><\/p>\n<p>You can find all documents here.<\/p>\n<form action=\" https:\/\/docuthek.kromschroeder.com\/documents\/index.php?lang=en&amp;menuid=31&amp;topmenu=31\" method=\"post\" target=\"blank\"><input name=\"searchvalue\" type=\"text\" value=\"\" placeholder=\"Search term\" \/><\/form>\n<p>&nbsp;<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-1820 alignnone\" src=\"https:\/\/b2fvdlvy.myraidbox.de\/wp-content\/uploads\/2017\/06\/dokulogo.gif\" alt=\"\" width=\"30\" height=\"30\" \/> <a href=\"https:\/\/docuthek.kromschroeder.com\/documents\/index.php?menuid=31&amp;topmenu=31?lang=en&amp;folder=1\" target=\"_blank\" rel=\"noopener\">docuthek.com<\/a><\/p>\n<p>[\/et_pb_text][\/et_pb_column][\/et_pb_row][\/et_pb_section]<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Your specialists in system solutions. Aluminium, steel, ceramics, glass industries etc. \u2014 they all need controlled temperatures for production. <\/p>\n","protected":false},"author":1,"featured_media":0,"parent":10318,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_et_pb_use_builder":"on","_et_pb_old_content":"","_et_gb_content_width":"","footnotes":""},"class_list":["post-10323","page","type-page","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/www.kromschroeder.de\/en\/wp-json\/wp\/v2\/pages\/10323","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.kromschroeder.de\/en\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/www.kromschroeder.de\/en\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/www.kromschroeder.de\/en\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.kromschroeder.de\/en\/wp-json\/wp\/v2\/comments?post=10323"}],"version-history":[{"count":0,"href":"https:\/\/www.kromschroeder.de\/en\/wp-json\/wp\/v2\/pages\/10323\/revisions"}],"up":[{"embeddable":true,"href":"https:\/\/www.kromschroeder.de\/en\/wp-json\/wp\/v2\/pages\/10318"}],"wp:attachment":[{"href":"https:\/\/www.kromschroeder.de\/en\/wp-json\/wp\/v2\/media?parent=10323"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}