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Prefect:
    The silent check valve is applied on lift pipe or fluid pipe with pressure. The valve, with restoring force, will be closed at suitable speed when pump is shut down to separate the inertia fluid (positive pressure)from the back flow (negative pressure) caused by power turned off and ,hence, prevent the noise caused by the impact of positive and negative pressure.
The silent check valve plays an important role on piping , especially applied on the outlet of the pump.
The silent check valve applied on the outlet of the pump should be selected carefully, and it must be able to resist the highest pressure, the largest water hammer effect and the biggest fluid impact. If the silent check valve is not good enough, when silent check valve is damaged, it will cause the fluid flowing back and losing pressure or, more serious, the damaged parts will fall on the blades and damage the pump seriously and, hence, lost more money.
To avoid the defect mentioned above, our company manufacture a more practicable and more economical model, called " FULL OPEN STYLE SILENT CHECK VALVE".

  Features:
  The design of the valve is full flow lift type and valve won't be impacted by the water flow. Hence, the valve can work for a long time and have huge flow rate.
The design of plug is hang type and
automatically locating. It can adjust the close position of the plug no matter high or low pressure.
  The design of sealing is up-side-down of "V" and it will be suitable to the occasions of high and/or low pressure and the tightness of the valve will be the best.
  The design of plug is semi-round and can be able to resist higher pressure and can be lasted for much longer.


Outlet diameter Connection type L A
2" Flange 183 122
2.5" Flange 200 132
3" Flange 210 147
4" Flange 220 160
5" Flange 260 180
6" Flange 280 200
8" Flange 370 --------
10" Flange 450 --------
12" Flange 520 --------
Item material
Body Cast iron Stainless steel
Bypass valve set Brass --------
Plug Brass Stainless steel
seat Brass Stainless steel
Locating bolt Brass --------
Cantilever Brass Stainless steel
Spring Stainless steel Stainless steel
Pin Brass Stainless steel
Sealing retainer Brass Stainless steel
sealing NBR --------

  Valve material: Cast iron,
  Stainless steel
  Test pressure for valve body :
  cast iron : 21kgf/cm2
  stainless steel : 35kgf/cm2
  Applied temperature:
  -15¢J ~ 80¢J
  Specification : JIS 10K
  The bypass valve set won't
be attached if the diameter is
lager than 8 inches.
  Special order is needed for
special fluid, material or
particular dimension.
  The Z-Tide silent check
valve is suitable to both horizontal and vertical type.