Composite high-speed inlet and exhaust valve is a kind of inlet and exhaust device that ensures the safety of water transmission pipeline and improves the efficiency of water transmission. It is widely used in long-distance water transmission pipeline, deep well pump type self-priming pump outlet, urban pipe network and other working conditions to effectively eliminate the bubbles accumulated in the pipeline system and ensure the safety of pipeline operation. Can provide a buffer device to effectively control the influence of the water hammer.

Size range: DN50~300
Pressure rating: PN6~16
Design standard: CJ / T 217 and GB / T 36523
Main material: QT 500-7
Connection type: flange type
Operation type: automatic