How Do Back Pressure Valves Work?
This valve is self-support type, do axial movement along with valve disc by spring force function, so as to generate differential pressure around the back pressure valve. Meanwhile, the valve seat hole opening bigger and bigger gradually until pressure differential reaches the setting point.
In order to make the valve achieve to the best performance, BPV should be installed in downstream of the important protected valve, since valve outlet velocity is high, the installation location should be close deaerator or water supply tank.
Be easy to operation and maintenance. We can provide installation and maintenance manuals.
DN25~DN150（1″-6″）Standard size: DN25~DN150（1″-6″）
Nominal pressure range: PN10~PN400（ANSI 150Lbs~ANSI 2500Lbs）.Another pressure range is according to requirements.
Flange connection standard is according to DIN or ANSI, another standard (e.g. ISO, BS, JIS, NF) can be customized.
How do a back pressure valves Install?
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.
|Stainless steel gasket||-20～+300||-40～+300||-196～+300||-196～+300|
|YB||7||Nominal pressure||Body Material||Nominal Diameter||Structure ytpe|
|Back Pressure Valve||7 serives||PN16=PN16
S = Overflow function
|For example 7 series BPV, Class 1500#, body maerial is A105, diameter 2", flange type connection,
Model : YB7-PN40-C-50-F
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