Check Valve Series

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Flange Silent Check Valve

manufacturer: Shanghai Fengqi Industry Development Co., Ltd.
Eml: sales@fengqi.sh.cn

Tel: 86 (21) 3652 8716
Mob: (86) 138 1635 6498

product drawing

Flange silent check valves
Flange silent check valves

Features and usages

DRVZ flange silent check valve primarily consists of body, seat, diversion body, disc, bearings and springs and other components. The internal flow channel adopts streamlined design, with a very small pressure loss, and the valve hoist stroke is very short. When stoping the pump, it can be quickly shut down, to prevent the huge sound of water hammer, and with a silent closure characteristic. The valve is mainly used for water supply and drainage, fire protection, HVAC systems, it can be installed on pump outlet, to prevent backflow and the pump damage caused by water hammer, effectively protecting the pump's normal operation.

Dimensions & constructral diagram

Flange silent check valve constructral diagram
Flange silent check valve constructral diagram

Main technical parameter

type DRVZ-10 DRVZ-16 DRVZ-25Q
nominal pressure PN (MPa) 1.0 1.6 2.5
nominal diameter DN (mm) 50~350
maximum wrking pressure (Mpa) 1.0 1.6 2.5
sealing test pressure (MPa) 1.0 1.6 2.5
shell test pressure(MPa) 1.5 2.4 3.75
the materials of main parts body,diversion body grey cast steel ductile cast iron
seat,bearing,disc,shaft Al bronze or Cr stainless steel
spring SS

Main external dimensions

nominal diameter DN (mm) L
50 120
65 150
80 180
100 229
125 254
150 268
200 292
250 330
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