Swing Check Valve Wafer Type Double Disc DN 50 mm

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Products Description of Swing Check Valve

Check valves are used in pipes under pressures between PN1.6~16.0MPa(Class150~2500Lb), working temperatures-196~600, They are used in industries include oil, chemistry, pharmaceutical, fertilizer, and power gene-ration to prevent the backward flux of the media.

The main structure features of Swing Check Valve:

1The products feature a reasonable structure, reliable seal, good performance and nice modeling.
Either soft or hard seal can be selected for the product upon different working conditions.The sealing face is built up with Co-based 
carbide alloy, leaving a better wearability, corrosion and scrap resistance and a longer duration.
Small opening pressure, the disc can be opened fully with a very small pressure differential.
Inside-set bolt-bearing structure reduces leakage and reliable use.
PN≥16.0Mpa (class1500), the middle cavity uses a self-tightening sealing structure to have the sealing performance reinforced along 
with the pressure rise so as to ensure the sealing performance.
Different parts materials and different sizes for flange, butt-welding are available for sensible combination according to different working facts and customers' requirements.

Parameter of Swing Check Valve:

Standard Criteria

 GB customize 

Pressure Rating

 1 Mpa  1.6 Mpa  2.5   Mpa  4 Mpa  6.4 Mpa  10 Mpa  16   Mpa customize 

Valve Size

 50 mm  65 mm  80   mm  100 mm  125 mm  150 mm  200   mm  250 mm 300 mm  350 mm  400   mm  450 mm  500 mm  600 mm customi


 Automatic customize 


 Wafer customize 


 Oil  Steam  Water customize   

Medium Temperature

 -196~600 customize   

Structural style

 Swing double-clack   structure customize 

Application Fields

 Agriculture  Electricity  Medical  Petrochemical customize   

1-Body Material

 CF3  CF8C  CF8  WCB  CF8M  CF3M customize   


 CF3  CF3M  WCB  CF8  CF8M  CF8C customize   


 1Cr13  1Cr18Ni9Ti  0Cr18Ni12Mo2Ti  2Cr13 customize   


 60Si2Mn  1Cr18Ni9Ti  4Cr13  0Cr18Ni12Mo2Ti customize   

Design Standard

 GB/T 12224 customize 

Connection Standard

 GB/T 9113  HG   20592  JB/T 79 customize 

Test Standard

 JB/T 9092-1999 customize 

Face to Face

 GB/T 15188.2-1994 customize 

Images of Swing Check Valve:

Swing Check Valve Wafer Type Double Disc DN  50 mm

Swing Check Valve Wafer Type Double Disc DN  50 mm

Swing Check Valve Wafer Type Double Disc DN  50 mm

FAQ of Swing Check Valve:

Q1:I can’t find the type of steel check valve which I need. what can I do?

The chart above only lists out some common composition of steel check valve parts.We may provide other different parts material composition according to the customer's request or the actual valve working condition.

Q2:Which certification do your products pass?

  Our products are in accordance with ISO 9001ISO 14001API 6AAPI 6DTS CEAPI607/6FA/BS6755. 

Q3:How can I place an order?

  The only one thing you should do is to tell us the sepecification about type 、quantity and  mode of transportation, then we will send you quotation within 24 hours.

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Q:How do I shut off a leaky hot water valve?
It sounds like your shutoff valve is not working properly. You need to shut off the hot water at the main valve where it comes out of the water heater (this will shut off all hot water in the house); drain the line (there's a little knob on the main shutoff valve you can twist that will allow the water in the pipe to drip out), then replace the shutoff valve. The shutoff valve is probably threaded pipe and can be loosened using two wrenches (hold the pipe with one wrench and twist the nut with the other - you want to conteract the twisting motion on the pipe so the pipe does not weaken and burst, which is why the one wrench needs to hold the pipe). once the valve is removed, clean the pipe threads with a wire brush and cleaning solvent to remove the rust and install the new valve. Be sure to read the manufacturer's directions to see if you need to wrap the threads with teflon tape first. When the valve is replaced, you can turn on the main hot water valve at the water heater; then use the new shutoff valve when you prepare to repair or replace the faucet. I would expect the faucet is leaking due to worn out washers, you can take it apart and tell. I susupect the rust you see is a result of the leak and not the other way around.
Q:Cannot pass smog-EGR valve?
All synthetic oil wont burn. But if the piston rings are shot and you'r failing on hydrocarbons, that's an expensive fix. Some states have an emissions waiver, maybe limited to older vehicles like yours, where if you show DMV you'v met their waiver threshold of spending on fixing the specific emissions prob that caused the failure and it still fails, they'l give you a pass till next inspection, or maybe only 1 yr. In some states it's not transferable when you sell and can only be used once per vehicle.
Q:What is a Valve Job?
a vale job is nothing it means nothing you dont get a valve job you get new heads... are rarely do they cause actual not functioning of the car. you have an old car that has seen better days. and age is catching up to it. the car itself is not the best made car and at best im surprised it hasnt hit the junk pile yet.
Q:does the pcv valve help my transmission shift?
The PCV valve is part of the engines emission control system. It controls the evacuation of the crankcase by applying engine vacuum to the crankcase and introducing the vapors drawn off into the engine. If the PCV valve and especially it's hose cracks or breaks, the engine will have a bad vacuum leak. The engine will loose a great deal of power. Many transmissions have a vacuum modulator that adjusts the shift points based upon engine vacuum levels. Normally low vacuum is associated with WOT (Wide Open Throttle) and so the tranny will delay upshifts when WOT is detected. Astrobuf
Q:confederacy of dunces: ignatius's valve?
May relate to a hiatus hernia, which is a fairly common illness involving a hole in the diaphragm separating the stomach from the lung cavity.
Q:Insufficient flow EGR Valve?
It could be two things. The exhaust gasket coming to the valve or the vacuum coming to the valve. The egr did not need changing. Without the proper tool to check it out. I can not say which it is or how to repair. It need to go to shop where the proper test can be use to find what need to be repaired of replaced Most likely it will be a one way vacuum valve, that is not working right.
Q:stop intake valve leakage in auto?
IF the valves are correctly adjusted, then the only solution is a valve job. Certain vehicle engines are more prone to burning valves than others.
Q:Can any one tell me how can i make a one way valve at home?
You are looking for whats called an RP or back flow device. These may be sold at home depot. However, I know your local plumbing supply house would carry them.
Q:Broke a Bolt in the Valve Cover?
easiest to just remove the valve cover completely and then there might be enough of the broken bolt left to get a pair of vice grips on it and unscrew it out, go to parts store and get a new bolt and a new valve cover gasket and reinstall.If you drive the car the way it is it might leak a little oil around the broken bolt.
Q:Valve covers leaking on my 75 VW Bug?
new seals + get rid of the cheapo chrome repros and put OEM covers back on.

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