API Cast Steel Check Valve 350 mm in Accordance with ISO17292、API 608、BS 5351、GB/T 12237

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Shanghai
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10 pc
Supply Capability:
100 pc/month

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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.

Seat

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 

Actuator

 Automatic customize 

Connection

 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 

3-Disc

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

4-Arm

 A351-CF8M  A216   WCB  A351-CF8 customize 

5-Nut

 A194-8  A194   2H  A194 8M customize 

6-Arm pin

 A182-F316  A182-F6a  A182-F304 customize   

7-Yoke

 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   

10-Bolt

 A193-B8  A193-B7  A193-B8M customize   

11-Gasket

 graphite+304  316+graphite customize   

12-Bonnet

 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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Think of an engine as an air pump - obviously, we want the least amount of restriction for the incoming air and also the least amount for exhausting the compressed air. The ideal situation would be to remove the head during the intake stroke and put it back on during the compression stroke, but, obviously, this isn't possible. On a naturally aspirated engine, the intake is the most critical because the air is moved only by a relatively small difference in pressures. The exhaust stroke, on the other hand, is aided greatly by the super heated temperature and rapid expansion of the gasses. Two intake and one exhaust valve seems to be the most practical and efficient solution - adding more vales means smaller valves and an increase in the overall complexity. I seriously doubt that Maserati ever abandoned ANY automotive idea due to cost restraints. It's far more likely that adding more valves than three or four simply resulted in diminishing returns. Sometimes the allure of a new buzz phrase is nothing more than a marketing ploy - a 16 valve, DOHC, four cylinder engine, for example, is a pretty impressive resume for an engine, regardless of whether it actually is the optimum performance set up or not.
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are okorder.com/... to see a picture of one The valve is threaded into the stem The stem has threads inside and out ,internal threads are for the schrader valve and external threads are for the stem cap If the stem came out there is damage to the stem and it needs to be replaced ,but if the valve came out try using a schrader tool to screw it back in
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After replacing all these parts it should have corrected any restriction. If it was vacuumed out there should be negative pressure in the system and accept a charge through the low side port. If you did not see the actual work done im wondering if the parts were indeed changed?
Q:How do I change a under the sink water shut off valve?
TURN THE STOPCOCK OFF OUTSIDE ..DRAIN WATER OUT OF THE TAP AND REPLACE WITH NEW ..
Q:Mountain bike presta/shrader valve?
Probably not; compromising the rim that way is a recipe for disaster....stock up with a few tubes from a bike shop; WM tubes are total junk........
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It will seal off better when valves close, but unless your going to increase compresion ratio with different pistons it really will not do that much good.
Q:Trumpet Valves Question?
No, it's ok, they are both the same. I've been using trumpet oil on my trombone slide for the past 4 yrs. It is less expensive, ad usually in stock. It's not bad. If i've used it for 4 yrs. I'm sure you can use it too! my BFF even used to use my trombone oil, that's how i ran out in the first place. I hope you do well with your instrument! Both are made of the same oil products. But i don't reccomend using cooking oil, or vegtable oil, it is too thick and makes the slide/valves greasy and is very hard to get off. Hope this helps.
Q:What can cure a heart valve problem?
It depends on what sort of heart valve problem you have, how bad it is, and how bad the symptoms are. Sometimes you don't need to do anything special except watch the diet and lifestyle, sometimes you need medicine, and sometimes the cure is surgical repair or replacement of the valve. I think prayer is a fine thing to help, but the Lord also gave us the skills so doctors could provide something a little more physical. If your heart valve problem is bad enough, it can cause damage to your heart and the rest of your body that all the prayer, diet, exercise and meditation in the world won't help fix. However, as a patient, it's always your decision if you want to take the doctor's advice or not. Otherwise you could find yourself dead, and explaining to God why you chose not to take the help He provided for you. So before you go making any decisions, you need to wait until you find out what the entire story is. Then weigh up all your options carefully,and decide.
Q:Mitral Valve Stenosis?
Mitral stenosis (MS) is narrowing of the mitral orifice impeding blood flow from the left atrium to the left ventricle. The (almost) invariable cause is rheumatic fever. Common complications are pulmonary hypertension, atrial fibrillation, and thromboembolism. Symptoms are those of heart failure; signs include an opening snap and a diastolic murmur. Diagnosis is by physical examination and echocardiography. Prognosis is good. Medical treatment includes diuretics, β-blockers or rate-limiting Ca channel blockers, and anticoagulants; effective treatment for more severe disease consists of balloon valvotomy, surgical commissurotomy, or valve replacement. The normal area of the mitral valve orifice is about 4 to 6 cm2. Under normal conditions, a normal mitral valve will not impede the flow of blood from the left atrium to the left ventricle during (ventricular) diastole, and the pressures in the left atrium and the left ventricle during diastole will be equal. The result is that the left ventricle gets filled with blood during early diastole, with only a small portion of extra blood contributed by contraction of the left atrium (the atrial kick) during late ventricular diastole. Patients with mitral stenosis prompts a series of hemodynamic changes that frequently cause deterioration of the patient's clinical status. A reduction in cardiac output, associated with acceleration of heart rate and shortening of the diastolic time, frequently leads to congestive heart failure. In addition, when AF sets in, systemic embolization becomes a real danger. Please undergo echocardiography test and check whether you have other heart defects such as mitral regurgitation and aortic insufficiency.
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Turn off the main water to your house. Turn that valve to open. Then tighen the nut on it (slightly), see if the valve will close , if yes; then tighten it a little more, then see if the valve will close. If yes - that should do it. If the nut is so tight that the valve will not close, then loosen the nut just a tad. That should do it, ......... now, turn the valve off. Turn back on the main water to your house -- and see if that works.

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