Ref Price:
$20.00 - 200.00 / pc
Loading Port:
Payment Terms:
TT or LC
Min Order Qty:
1 pc
Supply Capability:
9999 pc/month

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Product Description:

Quick Details

Standard or Nonstandard:





Medium Pressure





Temperature of Media:

Medium Temperature

Port Size:


Place of Origin:

China (Mainland)

Brand Name:





Water, air, oil

Packaging & Delivery

Packaging Details:

standard export packing plywood case

Delivery Detail:

30 days


● Rubber encapsulated disc
● Drain plug hole makes insertment of lifting equipment for flap possible
● Suitable for both horizontal and vertical installation
● FBE coated inside and outside
● Product color:Blue RAL5017


Technical Specification
● Flanges Drilling:EN1092-2 PN16
● Hydraulic test to ISO5208
Seat Test Pressure:17.6 bar
Shell Test Pressure:24 bar
● Maximum temperature:70℃



Parts Name       Material                                         
Valve bodyDutile iron, stainless steel, Cast Seel
Valve glandDutile iron, stainless steel, Cast Seel
Connection typeFlange connection
Application temperature≤80°C
Valve discStainless steel+ nylon cloth wrap




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Q:What is the function of the check valve installed in the water meter before entering the residential water?
Generally installed after the water meter. The main reason: if the water point is higher than the water meter installation position, once the pipe network in the absence of water, the remaining water in the pipeline will flow in the direction of the water meter in turn. This will cause the water meter to reverse and cause damage to the water meter. A check valve is installed after the water meter, so that the situation can be avoided.The main function of the check valve is to prevent the backflow of the medium, prevent the reverse of the pump and drive motor, and release the container medium. The check valve can also be used to provide a supply to the auxiliary system where the pressure may rise above the system pressure.
Q:Does the regulator have a check action? If yes, can I use it as a check valve?
No, it can only be used for regulating pressure. It can not replace the check valve.
Q:How can the check valve be distinguished from the cut-off valve?
Look literally can explain ah, pro! Check valve, your fluid medium can come in and want to go back. No way! Blocked. SO just goes back! This valve switch is usually dependent on the medium itself. What about the stop valve?. The flow of water in your pipe is good, I said, stop (if it is an electric globe valve) press the Shimonoseki button. Stop and stop right now. Medium can not flow. I want to open. Press open. The stem is lifted and the medium will flow! Of course inside the internal structure will not give you too much!
Q:How to use the check valve when the size of the pressure?
1) check valve: generally applicable to clean medium, should not be used for containing solid particles and viscosity medium.2), for the low pressure below DN50mm check valve, check valve should be selected on the clip, vertical lift check valve; for DN is greater than 200mm, less than 1200mm in the low pressure check valve, should use micro slow close check valve, water hammer eliminating buffer device with valve and check valve; for the low pressure DN is greater than 50mm, less than 2000mm should use check valve, butterfly valve and swing check valve.3), micro slow close check valve for easy to produce water hammer piping on the micro resistance slow closing system can well eliminate the media generated when the water hit counter, but limited by the temperature and pressure, generally used in low temperature pipe.4) for the closing of the water shock or small impact of the water pipeline, it is appropriate to use micro resistance slow closing check valve and buffer butterfly check valve.
Q:What is the difference between the H44H check valve and the H41 check valve?
Swing check valve H44HLift check valve H41HThe installation of check valves (Check, Valve) shall pay attention to the following items1. Do not allow the check valve to bear weight in the line.
Q:The air pipe is equipped with a check valve
[air pipe with check valve] wind pipe with check valve, is to prevent changes in the direction of the wind generated negative pressure, the phenomenon of air intrusion.[duct] is a pipe system for air delivery and distribution.[check valve] refers to the flow itself depends on the media itself and automatically open and close the valve, used to prevent media backflow valve, also known as check valve, one-way valve, counter flow valve, and back pressure valve. The check valve belongs to an automatic valve, whose main function is to prevent the backflow of medium, prevent the reverse of pump and drive motor, and release the container medium.
Q:Pump adapter need check valve?
Multifunctional pump combination device usually comes with safety valves and check valves, usually in the flange pipe interface or who is interface settings simple check valve, safety valve is white, but does not apply to the north, the northern cold, need to separate the pipes below plus a check valve, a higher temperature of the South may be suitable for direct use of non frozen.
Q:Where can I find the good check valve?
Crown valve pressIt depends on what type of check valve you need
Q:Does the check valve of the flue of the range hood work?
Lampblack machine flue check valve is generally installed in the hood outlet check valve, the valve has two blades, a reset spring, exhaust hood leaf was blown open, lampblack machine stop when the blade is spring pressed into the closed state, now is basically take lampblack machine the check valve check valve, but the general tightness is not very good, open the hood can be seen around the gap. According to everyone's reaction and market similar products sold well, smoke hood comes with soot hood flue check valve basically does not work.The picture of the check valve of the flue of the range hood is as follows:
Q:Detailed distinction between backflow preventer and check valve
The backflow preventer consists of two separated check valves and a drain valve. Due to the local head loss of the check valve, the pressure in the middle cavity is always lower than the pressure at the inlet. This pressure difference causes the drain valve to be closed and the pipe is in normal water supply. In abnormal pressure (i.e., the outlet pressure is higher than that of the middle cavity), even if the two check valve can not reverse sealing, safety relief valve can automatically open the reverse water emptying, and the formation of air separation, ensure the health and safety of water upstream.

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