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Yongjia Goole Valve Co.,Ltd

Address:  He yi Industrial Zone,Oubei Town,Wenzhou City,Zhejiang Province,P.R.China
Tel: 86-577- 57789960

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Email:goole2@goolevalve.com

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Position: Home > Products > Pressure Reducing Valve
Pressure Reducing Valve

BRV71 direct acting bellows pressure reducing valve

BRV71 direct acting bellows pressure reducing valve
BRV71 direct acting bellows pressure reducing valve

Detailed

BRV71/73 Bellows 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.
 

Note:


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.
 
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 Pressure

PN1.6 Mpa

Tested Pressure of Shell

2.4 Mpa

Sealing Test Pressure

1.76 Mpa

Maximum Upstream Pressure

1.0 Mpa

Maximum Downstream Pressure

0.9 Mpa

Pressure Range of Outlet

0.014-0.9 Mpa

Medium

Water, steam, liquid, air, oxygen, nitrogen, etc.

Operating Temperature

210

 
Material of Main Component.

 

Name of Component

Material of Component

ValveBody, Bottom Cover, Valve Cover

Cast Steel / CF8

Valve Flap,Valve Rod,Valve Seat

CF8

Bellows

1Cr18Ni9Ti

Hand wheel

Heat-resistant Plastic

Spring of Main Valve

50CrVA

Adjusting Spring

60Si2Mn

 
Main External Dimensions.

 

 

DN

G

A

A1

DN25

1

134

174

DN32

1 1/4

134

179

DN40

1 1/2

134

186

DN50

2

134

186

 

Hits:  UpdateTime:2017-09-13 08:32:18  【Printing】  【Close
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