Differential ratio of a wet alarm valve - Revision history

Designing Buildings at 13:06, 4 October 2020

2020-10-04T13:06:48Z

← Older revision		Revision as of 13:06, 4 October 2020
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	The Loss Prevention Certification Board (LPCB part of BRE Global) sets the standards needed to ensure that fire and security products and services perform effectively. LPCB’s Loss Prevention Standards (LPS) are applied in fire and security sectors around the world.		The Loss Prevention Certification Board (LPCB part of BRE Global) sets the standards needed to ensure that fire and security products and services perform effectively. LPCB’s Loss Prevention Standards (LPS) are applied in fire and security sectors around the world.

−	[https://www.redbooklive.com/lps.jsp LPS 1040 - 2.3, Requirements and testing procedures for the LPCB approval and listing of wet alarm valve sets], published by BRE Global in 2014, ~~suggest~~ that the differential ratio of a wet alarm valve is: ‘…the ratio of service pressure to system pressure, measured just before the valve clapper opens to equalise the pressure difference across it, when tested in accordance with the differential ratio test, 1.5.’	+	[https://www.redbooklive.com/lps.jsp LPS 1040 - 2.3, Requirements and testing procedures for the LPCB approval and listing of wet alarm valve sets], published by BRE Global in 2014, suggests that the differential ratio of a wet alarm valve is: ‘…the ratio of service pressure to system pressure, measured just before the valve clapper opens to equalise the pressure difference across it, when tested in accordance with the differential ratio test, 1.5.’

	--[[User:BRE_Group\|BRE Group]]		--[[User:BRE_Group\|BRE Group]]
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	* BRE articles on Designing Buildings Wiki.		* BRE articles on Designing Buildings Wiki.
	* Clapper.		* Clapper.
		+	* Differential type dry pipe valve.
	* Drenchers.		* Drenchers.
	* K factor.		* K factor.

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2020-10-04T12:56:04Z

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The Loss Prevention Certification Board (LPCB part of BRE Global) sets the standards needed to ensure that fire and security products and services perform effectively. LPCB’s Loss Prevention Standards (LPS) are applied in fire and security sectors around the world.

[https://www.redbooklive.com/lps.jsp LPS 1040 - 2.3, Requirements and testing procedures for the LPCB approval and listing of wet alarm valve sets], published by BRE Global in 2014, suggest that the differential ratio of a wet alarm valve is: ‘…the ratio of service pressure to system pressure, measured just before the valve clapper opens to equalise the pressure difference across it, when tested in accordance with the differential ratio test, 1.5.’

--[[User:BRE_Group|BRE Group]]

= Related articles on Designing Buildings Wiki =

* BRE articles on Designing Buildings Wiki.
* Clapper.
* Drenchers.
* K factor.
* Making the case for sprinklers and dispelling myths.
* Overview of automatic sprinkler system design and operation.
* Sprinkler systems explained: A guide to sprinkler installation standards and rules.
* Sprinkler.
* The cost efficiency of different combinations of fire protection measures.
* The impact of automatic sprinklers on building design.
* Watermist systems for fire protection in domestic and residential buildings DG 534.
* Wet alarm valve.

[[Category:DCN_Definition]] [[Category:DCN_Product_Knowledge]] [[Category:Definitions]]