Da42y Cryogenic Closed Spring Loaded Full Lift Low Temperature Safety Relief Valve for Air/LPG/Liquid Medium

• Structure: Spring Loaded Closed Full Lift Type
• Material: CS, Ss
• Category: Safety Valve
• Actuator: Automatic
• Connecting Type: Flange
• Medium: LPG (Liquified Petroleum Gas)
• Model NO.: GAA41Y
• Usage: Overpressure Protection
• Application: LPG Pipeline
• Body Design: Angle Type
• Transport Package: Plywood Case
• Specification: CE, SGS, GMP
• Trademark: GOOLE, OEM
• Origin: Wenzhou, Zhejiang, China
• HS Code: 8481400000
• Production Capacity: 10000PCS/Year

Product Description

DA42Y Cryogenic Closed Spring Loaded Full Lift Low Temperature Safety Relief Valve for Air/LPG/Liquid Medium
Liquefied Petroleum Gas Safety Valve/ Back-Flow Safety Valve

Product Description

A42F safety valve or called Safety Reflux Valve, is often mounted on the liquid-phase reflux pipeline of the pump outlet of the liquefied petroleum gas station. When the pressure inside equipment and pipelines rises over the allowed pressure, the valve will automatically open and fully discharge, and will automatically close when the pressure lowers to the setting pressure to ensure the safety of equipment.  

Application

1.When a double tightness barrier is required by the process fluid in the secondary pressure zone of the safety relief valve.
2.When the valve is subjected to a back pressure of between 10% and 50% of the set pressure.
3.When a conventional safety relief valve discharges against a back pressure,the opening pressure is the set pressure with atmospheric back pressure augmented by the actual superimposed back pressure just before the valve opens.
 
If  the back back pressure is variable,then the opening pressure of a conventional valve will also be variable.
 
To solve this problem,it is highly recommended to use a balanced bellows safety relief valve.The effective area of the bellows is substantially the same as the seating area of the disc on the nozzle and the bellows is vented to atmosphere through a hole drilled into the bonnet wall.The opening pressure of the safety relief valve is then independent of the back pressure.

Product Details

 

GAH42F Spring Loaded Full Lift Safety Valve Main Parts Material 

No	Parts Name	GAH42F- C  Material	GAH42F-P Material	GAH42F --R Material
1	Body	WCB	1cr18ni9ti	1cr18ni12mo2ti
2	Seat	2cr13/1cr18ni9ti	1cr18ni9ti	1cr18ni12mo2ti
3	Adjusting Ring	2cr13/1cr18ni9ti	1cr18ni9ti	1cr18ni12mo2ti
4	Disc	2cr13/1cr18ni9ti + PTFE	1cr18ni9ti + PTFE	1cr18ni12mo2ti+ PTFE
5	Guide	2cr13/1cr18ni9ti	1cr18ni9ti	1cr18ni12mo2ti
6	Bonnet	zg230-450	230-450	230-450
7	Spring	50crva	50crva	50crva
8	Stem	2cr13	2cr13	1cr18ni12mo2ti
9	Adjusting Bolt	45	2cr13	2cr13
10	Cap	200-400	200-400	200-400

 

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