A27 Spring Micro-Opening Unclosed Safety Relief Valve

Product Category：SAFETY RELIEF VALVE
Product Name：A27 Spring Micro-Opening Unclosed Safety Relief Valve
Product Tag：A27 Safety Relief Valve
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Product Introduction

A27H type spring micro-opening safety relief valve is suitable for equipment or pipelines with water, air, steam and other media whose working temperature is ≤200℃. A27Y is suitable for equipment or pipelines with corrosive media at working temperature ≤200℃, as an overpressure protection device.

Material of main parts and components of A27H spring micro-lift safety relief valve:

NO.	Part Name	A27H material	A27W-P material	A27W-R material
1	Valve body	HT350	ZG1Cr18Ni9Ti	ZG1Cr18Ni12Mo2Ti
2	Valve seat	35	ZG1Cr18Ni9Ti	ZG1Cr18Ni9Ti
3	Adjustment ring	2Cr13	1Cr18Ni9Ti	1Cr18Ni12Mo2Ti
4	Disc	2Cr13	1Cr18Ni9Ti	1Cr18Ni12Mo2Ti
5	spring	50CrVA	50CrVA coated fluoroplastic	50CrVA coated fluoroplastic
6	Stem	2Cr13	2Cr13	1Cr18Ni9Ti
7	Adjusting screw	45	2Cr13	1Cr18Ni9Ti
8	Protective cover	ZG200-400	ZG200-400	1Cr18Ni9Ti
	Sealing surface material	"H" Surfacing D507	"Y" surfacing Co-based cemented carbide

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