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DRVZ Silence Check Valve
Silence check valve consists of valve body,seat,diversion shuttle,disc,bearing and spring etc..The bore is flow-line designed so pressure loss is very little.The disc's stroke is very short and when stop the pump the valve can close quickly and prevent the great noise from water-hammering so the valve can close quietly without any noise .It is widely used in feeding/draining system,fire protection and heat supplying system,and it is installed at the outlet of the pump to prevent backward fluid's and water-hammering's damage to the pump.
Main technical parameters
Nominal Pressure: 1.0-2.5MPa
Nominal Diameter: 50-350mm
Service:water,oils,sea water,sewage
Working Temperature:0-80ºC
Flanged End: GB/T17241.6 GB9113
Inspection and Test: GB/T 13927 API 598
Material:
Body and diversion shuttle: |
Disc and shaft: |
Spring |
ductile cast iron seat,bearing, |
Al-bronze or Cr-stainless steel |
Stainless steel |
Dimensions( mm):
DN |
40 |
50 |
65 |
80 |
100 |
125 |
150 |
200 |
250 |
300 |
350 |
L |
110 |
120 |
150 |
180 |
229 |
254 |
267 |
292 |
330 |
356 |
381 |
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