<p class="MsoBodyText"><span lang="EN-GB">This document specifies safety, constructional, performance and testing requirements of normally open automatic vent valves, hereafter referred to as “valves”.</span></p>
<p class="MsoBodyText"><span lang="EN-GB">This document applies to valves with a declared maximum operating pressure up to and including 500 kPa of nominal connection sizes up to and including DN 100 (4”), for use in gas control train of gas burners or in appliances using gaseous fuels such as natural, manufactured or liquefied petroleum gas (LPG). It is not applicable to corrosive and waste gases.</span></p>
<p class="MsoBodyText"><span lang="EN-GB">This document applies to:</span></p>
<p class="ListContinue1" style="mso-list: l0 level1 lfo1;"><!-- [if !supportLists]--><span lang="EN-GB" style="mso-fareast-font-family: Cambria; mso-bidi-font-family: Cambria;"><span style="mso-list: Ignore;">—<span style="font: 7.0pt 'Times New Roman';"> </span></span></span><!--[endif]--><span lang="EN-GB">electrically operated valves and to valves actuated by fluids where the control valves for these fluids are actuated electrically, but not to any external devices for switching the control signal or actuating energy; </span></p>
<p class="ListContinue1" style="mso-list: l0 level1 lfo1;"><!-- [if !supportLists]--><span lang="EN-GB" style="mso-fareast-font-family: Cambria; mso-bidi-font-family: Cambria;"><span style="mso-list: Ignore;">—<span style="font: 7.0pt 'Times New Roman';"> </span></span></span><!--[endif]--><span lang="EN-GB">valves fitted with open position indicator switches.</span></p>
<p class="MsoBodyText"><span lang="EN-GB">This document covers type testing only.</span></p>
Registration number (WIID)
85515
Scope
<p class="MsoBodyText"><span lang="EN-GB">This document specifies safety, constructional, performance and testing requirements of normally open automatic vent valves, hereafter referred to as “valves”.</span></p>
<p class="MsoBodyText"><span lang="EN-GB">This document applies to valves with a declared maximum operating pressure up to and including 500 kPa of nominal connection sizes up to and including DN 100 (4”), for use in gas control train of gas burners or in appliances using gaseous fuels such as natural, manufactured or liquefied petroleum gas (LPG). It is not applicable to corrosive and waste gases.</span></p>
<p class="MsoBodyText"><span lang="EN-GB">This document applies to:</span></p>
<p class="ListContinue1" style="mso-list: l0 level1 lfo1;"><!-- [if !supportLists]--><span lang="EN-GB" style="mso-fareast-font-family: Cambria; mso-bidi-font-family: Cambria;"><span style="mso-list: Ignore;">—<span style="font: 7.0pt 'Times New Roman';"> </span></span></span><!--[endif]--><span lang="EN-GB">electrically operated valves and to valves actuated by fluids where the control valves for these fluids are actuated electrically, but not to any external devices for switching the control signal or actuating energy; </span></p>
<p class="ListContinue1" style="mso-list: l0 level1 lfo1;"><!-- [if !supportLists]--><span lang="EN-GB" style="mso-fareast-font-family: Cambria; mso-bidi-font-family: Cambria;"><span style="mso-list: Ignore;">—<span style="font: 7.0pt 'Times New Roman';"> </span></span></span><!--[endif]--><span lang="EN-GB">valves fitted with open position indicator switches.</span></p>
<p class="MsoBodyText"><span lang="EN-GB">This document covers type testing only.</span></p>
