Zhejiang, China
Business Type:
Manufacturer/Factory & Trading Company
Business Range:
Agriculture & Food, Chemicals, Industrial Equipment & Components, Instruments & Meters, ...
Management System Certification:
ISO 9001, ISO 14001
Main Markets:
North America, South America, Europe, Southeast Asia/ Mideast, Africa
OEM/ODM Availability:
OEM/ODM Service
Sample Available

Safety Valve, Balanced Safety Valve, Bellow Safety Valve manufacturer / supplier in China, offering Balanced Bellow Pressure Safety Relief Valve (GAA42Y), Hiding Stem Parallel Double Disc Gate Valve (GAZ48T/GAZ548T/GAZ948T), Gas Emergency Shut off Solenoid Valve (GAZCRB) and so on.

Gold Member Since 2015
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Balanced Bellow Pressure Safety Relief Valve (GAA42Y)

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Min. Order / Reference FOB Price
1 Piece US $1/ Piece
Port: Shanghai, China
Production Capacity: 10000PCS/Year
Payment Terms: L/C, T/T, D/P, Western Union
Certification: CCC, ISO, CE
Temperature: Ordinary Temperature
Connection: Flange
Pressure: Adjustable
Closed: Closed
Structure: Spring

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Basic Info

Model NO.: GAA42Y
Material: C.S/S.S
Category: Safety Valve
Connecting Type: Flange
Medium: Toxic or Corrosive Gas
Medium Temperature: Below 300 Deg C
Usage: Safety
Application: Industrial Equipment and Pipelines
Trademark: Goole or others
Transport Package: Plywood Case
Specification: ISO 9001
Origin: Wenzhou
HS Code: 8481400000

Product Description

Balanced Bellows Safety Valve is often used for the pipelines with toxic or corrosive medium.It's often supplied with closed bonnet with or without lever.We Goole can also offer jacketed bellow type balanced safety valve.
Balanced bellow safety valve should be used in the following condition:
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.

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