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Back Pressure Valve
Nov 22, 2018

Back pressure valve is used to the applicable conditions that the common controlling system can not be used, as a kind of special pressure control valves, it commonly match with t protect pump system.
Back pressure valve is used to control upstream pressure, enables to achieve factory technological setting pressure value and system required pressure value, preventing vaporization and corrosion phenomena.
Carefully matched technological condition between automatic recirculation valve and back pressure valve, ensure pump get the best protection, guarantee long-term stability for safe operation system.

WORKING PRINCIPLE
This valve is self-support type, do axial movement along valve disc by spring force function, so as to generate differential pressure around back pressure valve. Meanwhile, valve seat hole opening bigger and bigger gradually until pressure differential reaches setting point.
INSTALLATION
In order to make the valve to achieve to best performance, BPV should be installed in downstream of the important protected valve, since valve outlet velocity is high, installation location should be close deaerator or water supply tank.
MAINTENANCE
Be easy to operation and maintenance.We can provide installation and maintenance manual.
VALVE SIZE
DN25~DN150(1″-6″)Standard size: DN25~DN150(1″-6″)
PRESSURE RANGE
Nominal pressure range: PN10~PN400(ANSI 150Lbs~ANSI 2500Lbs).Other pressure range is according to requirements.
CONNECTION
Flange connection standard is according to DIN or ANSI, other standard (e.g. ISO, BS, JIS, NF) can be customerized.
MATERIAL TEMPERATURE RANGE

Body material


Sealing material

A105LF2F304F316
NBR-20~+100-30~+100-30~+100-30~+100
FKM-20~+200-40~+200-40~+200-40~+200
PTFE-20~+230-40~+230-80~+230-80~+230
Stainless steel gasket-20~+300-40~+300-196~+300-196~+300

INSTALLATION
In order to make the valve to achieve best performance, YB7 should be installed in the downstream of the protected valve, since valve outlet velocity flow is high, installation location should near close to deaerator or tank.
Back-Pressure-Valve_1


NONameMaterial( Commonly used)
1BodyA105LF2F304F316
2Elastic block circle2Cr132Cr13304316
3Seat2Cr13+STL2Cr13+STL304+STL316+STL
4O ringEPDMEPDMEPDMEPDM
5Trim2Cr13+STL2Cr13+STL304+STL316+STL
6Spring60Si2Mn60Si2Mn1Cr18Ni9Ti316
7Pressed nut2Cr132Cr13304316


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