API Cast Steel Check Valve 100 mm in Accordance with ISO17292、API 608、BS 5351、GB/T 12237

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Product Description:

The features of check valve

Bolted Bonnet;Swing and lift disc;Metallic seating surfaces.

Body and Bonnet Connection

The body and bonnet of Class150~Class900 check valves are usually with studs and nuts.And the body and bonnet of Class1500~Class2500 check valves are usually of pressurized seal design.                                                                                                         

Body-To-Bonnet Joint

Stainless steel + flesible graphite wounded gasket is used for Class 150 and Class 300 check valve;Stainless steel + flexible graphite wounded gasket is used for Class 600 check valve,and joint gasket is also optional for Class 600 check valve;Ring joint gasket is used for Class900 check valve;Pressurized seal design is used for Class 1500~Class 2500 check valves.


For carbon steel check valve,the seat is usually forged steel.The sealing surface of the seat is spray welded with hard alloy specified by the customer.Renewable threaded seat is used for NPS<10 check valves ,and welded on seat can be also optional if being requested by the customer.Welded on seat is used for NPS>12 crbon steel gate valves .Forstainless steel check valve,integral seat is usually adopted ,or to weld hard alloy directly integrally.Threaded or welded on seat is also optional for stainless steel check valve if being requested by the customer.

Standard   Criteria

 ASME/ANSI/API customize   

Pressure   Rating

 150   Class  300 Class  600 Class  900   Class  1500 Class  2500 Class 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  650 mm  700 mm 750 mm

 2   inch  2.5 inch  3 inch  4 inch  5   inch  6 inch  8 inch  10 inch  12   inch 14 inch  16 inch  18 inch  20   inch  24 inch  26 inch  28 inch  30   inch customize 


 Automatic customize 


 Butt Welding  Flange   RF  Flange RTJ customize 

1-Body Material

 A216   WCB  A351-CF8  A351-CF8M customize 

2-Seat ring

 A105+13Cr  A351-CF8M  A351-CF8  A105+Tool   Steel customize 


 13Cr+A216   WCB  A351-CF8  A351-CF8M  Tool Steel+A216   WCB customize 


 A351-CF8M  A216   WCB  A351-CF8 customize 


 A194-8  A194   2H  A194 8M customize 

6-Arm pin

 A182-F316  A182-F6a  A182-F304 customize   


 A351-CF8M  A216   WCB  A351-CF8 customize 

8-Bonnet nut

 A194 2H  A194   8M  A194-8 customize 

9-Bonnet bolt

 A193-B8  A193-B8M  A193-B7 customize   


 A193-B8  A193-B7  A193-B8M customize   


 graphite+304  316+graphite customize   


 A351-CF8  A216   WCB  A351-CF8M customize 

13-Eye bolt

 A181 customize 

Design Standard

 API 6D  BS   1868 customize 

Connection Standard

 API 605  ASME B   16.25-2007  ASME B 16.47A  ASME B 16.47B  ASME   B 16.5  MSS SP-44 customize 

Test Standard

 API 598  API   6D customize 

Face to Face

 ASME B 16.10 customize 

Pressure-temperature ratings

 ASME B   16.34-2004 customize 

Wall thickness dimension

 API 600  BS   1868 customize 

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Q:Aortic valve regurgitation?
Hello, You don't tell us *why* your doctors think, you developed this problem with your aortic valve in the first place? Has there been any infection of the valve with germs, (bacterial endocarditis)? Did you have Rheumatic Fever as a child? Were you born, with stenosis or regurgitation of your aortic valve? Do you have abnormally early, clogging-up of your artery-linings with cholesterol?
Q:Plastic ball valve help!?
=== take it back and get another valve .... if it doesn't work freely in your hand then the valve will be a problem if you install it ---- working with pvc you should use the purple glue that is waterproof and it is a good seal and no leaks when you have
Q:GMC chevy 350 valve problem?
Sound like a blown intake valve. Do a compression test and if you find a bad cylinder, do a leakdown test. A leakdown test is where you pump compressed air into the cylinder with the bad compression. You need to make sure that both valves are closed which is determined by the crank position. If the air is leaking into the intake/carburetor, then you have a bad exhaust valve. Time to pull the heads, or do an engine swap. As for the buy a Ford guy, the GM blocks are the best out there. That is why almost all marine engines are GM blocks.
Q:32 / 64 / 128 / 512 Valve Car Engine?
There's no point. 4 or 5 valves per cylinder are enough for almost every automotive application. Or are you getting valves and cylinders mixed up? Even in that case, there's no point. Eventually the complexity and weight cancel out any benefits you'd get from the added power it could create. Also, you would eventually have too much torque for the crank to take without being ridiculously thick and heavy, further increasing the weight of the engine, or serving as a limiting factor for maximum engine size. Waitasec...you ARE getting them mixed up. There are plenty of 24 and 32 valve engines out there (3 and 4 valve per cylinder V8s) . Valves are parts on the top of the cylinder that let IN air (and in some cars, fuel), and let OUT exhaust gases. The more valves per cylinder, the more freely these gases can flow...but past a certain number, additional valves are pointless. The most CYLINDERS in an automotive engine in current production is the Bugatti Veyron's 16 CYLINDER engine, which has 4 VALVES for each CYLINDER, for a total of 64 VALVES.
Q:can a leaky valve covergasket or old pcv valve cause oil to burn from the exhaust?
is it burning[smoking out the ex.] or the engine comp[on the ex? ] sorry to answ with ? A blow out pcv could suck raw oil into combustion but would probably cause rough performance . slobbering injector would dilute oil in cylinder, and would smoke especially on acell.
Q:Blow-off valve requirements?
I'm a girl.....you don't have to have a turbo, any type of fast car will get you blown off.
Q:how to loosen a ball valve?
tap it lightly with a hammer while turning it
Q:Will a tire go flat if you just take out the Valve Stem Cap?
No. The cap just keeps dirt, debris and moisture out of the valve stem and core. If you remove the valve core (it screws out with a special tool) then yes, your tire will go flat in a big hurry. To remove the complete valve stem as a unit there is a tool that screws on to the end that you can use to rip it out of the wheel. A new stem has to then be inserted from inside the wheel requiring the tire to be dismounted.
Q:97 Escort. Trying to prevent the dreaded valve dropping. If I maintain the engine colder could the valve hold?
If the valve has dropped you will hear a ticking nose when the engine is running. It the valve hitting the piston. This need to be fixed ASAP, With a stuck valve you will experance back firing or lots of smoke could out of the tall pipe especially on acceleration. Either way if you are trying to keep your car I would have the problem correctly diagnosed and this will likely means you will need a top end rebuild. These little 1.9L ford engines were pretty tough but after XX amount of miles and so many years it time for some internal engine work.
Q:Trumpet valve oil substitute?
There are recipes for some home made oils on the internet, but most players and teachers will tell you to purchase some valve oil from the music shop. It's one of the cheapest musical instrument maintenance items available. WD40 and baby oil are NOT recommended.

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