This valve is a safety device installed in the pipe or water pump outlet with thousands of pump shutdown to prevent the pipeline pressure water hammer pump side. Has the advantages of novel structure, small volume, light weight, small fluid resistance, the sealing is reliable, steady opening and closing, long service life, good energy-saving effect.
To prevent the pipeline water hammer or the outlet of the pump is suitable for water supply and drainage, fire protection, HVAC system flow generated medium side damage to the pump and pipeline, the formation of the silencing effect.
Part name material
Valve cast iron, cast copper
Valve cast copper, stainless steel
Valve, cylinder, stainless steel oil plug
Stainless steel spring
The seat Ding Qing rubber

Nominal pressure
(Mpa 1.6) 1
Test pressure
(Mpa) shell strength 1.5 2.4
Sealing performance 1.1 1.76
The working temperature of 0-80 ℃ (c)
Applicable medium waterlogging, sewage, seawater
Slow closing time (S) 0-60
The implementation of standards:
Design and manufacture of: GB/T 12238 JB/T5299
The structural length: GB12221
Test and inspection: GB/T13927
Flange size: GB/T17241.6