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The air exhaust check valve is installed on the outlet pipe of the high pressure feed pump of the thermal power unit to prevent water supply backflow and protect the feed pump.The valve works with the pump self-operated recirculation bypass valve with low flow. When the feed pump is under low load or the outlet closure door is closed, the automatic recirculation bypass valve should be in the open position to ensure the safe operation of the pump.When the air vent check valve opens, the recirculation bypass valve closes automatically.Not suitable for media containing solid particles and high viscosity.

Product Model: H48Y (H)
Nominal diameter: DN50 ~ 250mm
Nominal pressure: PN20MPa
Operating temperature: ≤160℃
Design and Manufacture: ASME B16.34, JB/T3595, E101
Pressure temperature: ANSI B1 6.34, JB/T74, JB/T3595, E101
Structure length: ANSI B16.10, E101, GB/T15188.1, JB/T2766
Butt welding connection size: ASME B16.25, GB/T12224, E101
Inspection and testing: ISO5208, GB/T13927, JB/T3595