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

Pressure Reducing Valve, Pressure Regulating Valve, Relief Valve manufacturer / supplier in China, offering Spring Bellows Pressure Reducing Valve (BRV71/BRV73), Cast Steel Split Body Standard Port Ball Valve (116), Cast Steel Split Body Reduced Ball Valve (GARQ41F) and so on.

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Spring Bellows Pressure Reducing Valve (BRV71/BRV73)

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Min. Order / Reference FOB Price
1 Piece US $1/ Piece
Port: Shanghai, China
Production Capacity: 10000PCS/Year
Payment Terms: T/T, Western Union, Paypal
Certification: ISO
Temperature: Ordinary Temperature
Connection: Flange/Thread
Valve Seat: Single-Seat
Structure: Bellows
Material: C.S

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Basic Info

Model NO.: BRV71/BRV73
Size: 1"-2"
Category: Pressure Reducing Valve
Connecting Type: Threaded
Medium: Steam., etc
Working Temperature: Below 250 Deg C
Usage: Pressure Reducing
Application: Steam System and Air Compressor System
Trademark: GOOLE, OEM
Transport Package: Carton, Plywood Case
Specification: ISO 9001
Origin: China(Mainland)
HS Code: 8481804090

Product Description

Spring Bellows Pressure Reducing Valve (BRV71/BRV73)
Spring Bellows Pressure Reducing Valve (BRV71/BRV73)

BRV71/73-GVPR06 B
ellows Pressure Reducing Valve

Brief Introduction.

This pressure reducing valve is robust direct acting bellows pressure reducing valve designed for use on steam,air and inert industrial type gases.The valve is available in four nominal sizes:DN25,DN32 ,DN40 and DN50. Set the outlet pressure through adjusting spring, the opening of valve flap enlarged when the outlet pressure reduced, the opening of valve flap decreased when the outlet pressure reached to the set pressure. The valve pressure of the medium acts on the area of corrugated tube and transduce to adjusting spring, realizing the function of pressure reducing and regulating.

This reducing valve is designed in meet of the need of energy saving. It has the characteristics of multi-function and light. You can adjust the pressure by rotating the plastic hand wheel, no need to use tool, the connection and installation is very convenient. The internal structure use corrugated tube, the sealing face has filtering mesh protecting device, which protect the internal parts from damage, and greatly prolong the service life.

Working Principle

In operation the valve will modulate as a result of a downstream pressure signal fed through the sensing orifice in the valve stem . This pressure acts on the control bellows generating a force which is balanced by the compressed control spring.The internal forces generated as a result of both upstream and downstream pressures acting on the area of the valve head are minimized by use of a balancing bellows . A graphite reinforced PTFE bush incorporated in both the pushrod/balancing bellows assembly and bottom cap assembly provides two point guiding.

The maximum upstream pressure is 10 bar and it is recommended that the pressure turn down is limited to about 10:1.
BRV71 Screwed NPT Connections
BRV73 Flanged PN16,ANSI 150 or JIS 10 Connections.
Field of Application.
Product Name: BRV71/73 Direct Acting Bellows Pressure Reducing Valve.
Pressure Rating: 1.6- 2.5 Mpa.
Nominal Diameter: DN25-50 mm.
Body Material: Steel, CF8.
Standard Flanges: DIN, ANSI, JIS.
Standard Screwed: NPT,BSP.
Spring Range:0.14~1.7 bar g,1.4~4.0 bar g,3.5~9.0 bar g.
Main Technical Parameters and Indexes of Performance.
Nominal PressurePN1.6 Mpa
Tested Pressure of Shell2.4 Mpa
Sealing Test Pressure1.76 Mpa
Maximum Upstream Pressure1.0 Mpa
Maximum Downstream Pressure0.9 Mpa
Pressure Range of Outlet0.014-0.9 Mpa
MediumWater, steam, liquid, air, oxygen, nitrogen, etc.
Operating Temperature210
Material of Main Component.
Name of ComponentMaterial of Component
ValveBody, Bottom Cover, Valve CoverCast Steel / CF8
Valve Flap,Valve Rod,Valve SeatCF8
Hand wheelHeat-resistant Plastic
Spring of Main Valve50CrVA
Adjusting Spring60Si2Mn
Main External Dimensions.
 Spring Bellows Pressure Reducing Valve (BRV71/BRV73)
DN321 1/4134179
DN401 1/2134186

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