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.
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.
150 Class 300 Class 600 Class 900 Class 1500 Class 2500 Class customize
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
Butt Welding Flange RF Flange RTJ customize
A216 WCB A351-CF8 A351-CF8M customize
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
A182-F316 A182-F6a A182-F304 customize
A351-CF8M A216 WCB A351-CF8 customize
A194 2H A194 8M A194-8 customize
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
API 6D BS 1868 customize
API 605 ASME B 16.25-2007 ASME B 16.47A ASME B 16.47B ASME B 16.5 MSS SP-44 customize
API 598 API 6D customize
Face to Face
ASME B 16.10 customize
ASME B 16.34-2004 customize
Wall thickness dimension
API 600 BS 1868 customize
- Q:Zone valves with aquastat?
- The zone valves should have 4 wires, 2 yellow and 2 red.The yellow wires are connected to the 24 volt thermostat circuit in a series. The corresponding thermostat turns the motor on, opening the zone valve, closing the end switch and turning on the boiler and the pump. The red wires are the end switch wires. They are just wired together in parallel and anytime at least one opens, it turns the boiler/pump on. Now, you must have one of the Tstat wires going to the boiler, when it calls for heat, it turns the boiler/pump on. You probably have the zone valves locked in the open position. So you will have heat all over the house but just not as much control as you had when you were running individual zones. But, you know what? Your system would be more efficient if you left the zone valves locked open and ran the system from one thermostat! To make it even better, you can run the circulation pump all heating season long ( just wire it direct to 120v) and just use the thermostat to turn the boiler(burner) on when there is a call for heat. If one zone or the other is too hot, try turning a valve down on the return line(if you have valves) to balance the heat. Hope this is not too complicated and hope to help!...................................
- Q:Anybody with a valve replacement?Which valves do u think are more successful,mechanical or natural?
- Usually with an artificial valve, you'll need to be on a blood thinner for the rest of your life. If they use a natural valve, you usually won't need the blood thinner - perhaps you will for a little while, but not permanently. You can request a natural valve, but the surgeon doesn't know what size/shape of valve you need until he actually opens you up and sees what he's working with. He has an idea, based on the x-rays and MRIs you've had done, but he won't know for sure until he actually see it. So the surgeons are going to request that the Organ Procurement Department to thaw out two or three valves, depending on what they see in the tests. You can't just keep thawing out valaves, testing them, and then refreezing them if they aren't what you are looking for, so if they turn out to not be a good fit, he's going to turn to an artificial valve. So you could request a natural valve, but because of the shape of the gap that he needs to fill, you may have to have an artificial valve. Blood thinners scare people, and your friends will tell you horror stories about how their uncle's cousin's Nephew cut his arm and bled to death because he was on a blood thinner! That could happen, but it is very rare. What does happen is that you will have to go to your doctor once a month and have a blood test, and if your blood is too thin, you need to ease off on the blood thinning medication. Or if it is too thick, you need to take more. If you're blood is too thin, you'll bruise more easily - which might be embarrassing if the bruise can be seen. Blood thinners aren't as dangerous as they make them out to be, but they can be inconvenient!
- Q:Minor Heart Valve Leak?
- The pills before dental work are necessary, yes. When you have a problem with one or more of your heart valves you're at increased risk of endocarditis (poor dental care/not taking the pills is the most common cause of endocarditis) and, if you get that, you'll be left feeling very sick and stuck in hospital, plus endocarditis can cause heart failure or even death so it isn't something to dismiss lightly. Whether or not surgery is an option at the moment for you is something you'll have to discuss with your own doctor. If it isn't stopping you from doing things you want to do in your everyday life, then it almost certainly isn't needed yet. If/when you do decide to have the valve repaired/replaced, you may not need any actual surgery. Increasingly more and more hospitals, incl. mine, are doing valve repairs and replacements without the need for surgery. They do it in the catheter lab, using a catheter (thin plastic tube) threaded up through your blood vessels (usually going into your groin) to your heart. That way you just need a sedative rather than an anaesthetic, plus people are in and out of hospital the same day with nothing more than a band aid to show they've had anything done. Even if your hospital is still only doing surgical repairs/replacements, it is a common, routine and safe surgery. It has a success rate greater than 98% and 96% of people who have it done find they need no further work on the valve for at least another 15 years. If eventually you do decide to have the leaky valve replaced tho. you will have to take anti-coagulant medication (warfarin pills) every day, and have regular blood tests, for the rest of your life. If you're pretty much free of medication and doctor's appointment's at the moment, it's* another thing to consider before making any decision to get your valve replaced. (*how you'll feel about taking daily medication and having to get frequent blood tests from now 'til eternity)
- Q:an people with bicuspid aortic valve live long?
- The mitral valve between the left atrium and left ventricle only has two cusps and it works fine. Since the valve going into the left ventricle has two valves, it stands to reason that a similar valve going out of the left ventricle would function similarly if it was the same size and shape. The number of cusps is not entirely related to how well the valve functions. In your case, the opening of the aortic valve is slightly smaller than normal, but clearly capable of passing an adequate amount of blood. The stenosis alone may be the only problem caused by the valve. The stenosis you have likely creates some back pressure when the left ventricle contracts. The heart compensates partly for the back pressure but this prolonged compensation wears on the heart valve a little more than normal. So, you end up with a heart that more or less functions normally but the back pressure and compensation cause the heart valve to wear out faster than normal. Its a gradual effect. The type of damage done from this circumstance is not something that changes rapidly. Evaluating the condition every three years is still probably a very cautious approach and its not certain that the stenosis will ever become a significant problem even if you live well beyond 70 years.
- Q:what is the function of varible throttle valve?
- A throttle valve allows continuous control of the rate at which some fluid moves from a region of relatively high pressure into a region of relatively low pressure. An example would be in an automobile engine, where the throttle controls the rate at which air (at or above atmospheric pressure) enters the engine's intake manifold (near vacuum when the throttle is closed.) The throttle in an automobile engine is mechanically linked to the gas pedal (in case you didn't know).
- Q:Mitral Valve Prolapse and headache...any relation?
- Although mitral valve prolapse is a lifelong disorder, many people with this condition never have symptoms. When diagnosed, people may be surprised to learn that they have a heart abnormality. When signs and symptoms do occur with mitral valve prolapse, it's typically because blood is leaking backward through the valve (regurgitation). Symptoms can vary widely from one person to another. They tend to be mild, develop gradually and may include: A racing or irregular heartbeat (arrhythmia) Dizziness, lightheadedness Difficulty breathing or shortness of breath, often when lying flat or during physical exertion Fatigue Chest pain that's not associated with a heart attack or coronary artery disease When your heart is working properly, the mitral valve closes during contraction of the left ventricle to prevent blood from flowing back into your heart's upper left chamber (left atrium). But in some people with MVP, the mitral valve malfunctions. In these people, the mitral valve leaflets are abnormal with extra tissue, bulging (prolapsing) like a parachute into their left atrium each time the heart contracts. The bulging may keep the valve from closing tightly. This may not cause problems if only a small amount of blood leaks back into the atrium. When blood leaks backwards through the valve, it's called mitral regurgitation (MR). MR can cause symptoms. Take care always! OIRAM
- Q:Function of a ECG Valve?
- Here is a link dealing with the ECG (Engine Control Group). www.iau.dtu.dk/~eh/ecg_proj.html
- Q:Applicational uses of Reduced port & Full port ball valve?
- W.W. Grainger out of Chicago ships all over the world, also McMaster-Carr Supply.
- Q:What air pressure valve do I use for vacuum chamber?
- Any valve rated WOG (water, oil, gas) is OK for vacuum. Maximum vacuum pressure differential is atmospheric pressure (14.7psi, 101.3kPa, 1 bar). For convenience, you might use a barbed valve which is sized for tubing (See Yahoo! Images: barbed conical gas valve). Any plumbing and heating supply, or commercial cooking equipment supply will have a variety of miniature bronze gas valves to choose from.
- Q:How do i make a ball valve?
- put a slave servo on it,
1. Manufacturer Overview
|Annual Output Value
2. Manufacturer Certificates
|a) Certification Name
3. Manufacturer Capability
|No.of Employees in Trade Department
|No. of Production Lines
|Product Price Range