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| DRVZ silence check valve |
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| product introduction |
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. |
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main technical parameters |
Nominal pressure: 1.0-2.5MPa
Nominal diameter: 50-350mm
service:water,oils,sea water,sewage
Working temperature:0-80
Flanged end: GB/T17241.6 GB9113
Inspection and test: GB/T 13927 API 598
| Material |
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Body and diversion shuttle:
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disc and shaft:
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spring
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ductile cast iron seat,bearing,
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Al-bronze or Cr-stainless steel
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stainless steel
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main dimensionsunit:mm |
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DN
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40
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50
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65
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80
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100
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125
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150
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200
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250
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300
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350
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L
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110
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120
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150
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180
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229
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254
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267
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292
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330
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356
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381
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