Turbine Type Butterfly Valve DN450 with Hand Wheel BS Standard

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1. Manual Wafer Butterfly Valve Description:
A butterfly valve is a valve which can be used for isolating or regulating flow. The closing mechanism takes the form of a disk. Operation is similar to that of a ball valve, which allows for quick shut off. Butterfly valves are generally favored because they are lower in cost to other valve designs as well as being lighter in weight, meaning less support is required.

2.Main Features of the Manual Wafer Butterfly Valve
1. Small in size and light in weight, easy instillation and maintenance. It can be mounted wherever needed
2. Simple and compact construction, quick 90 degrees on-off operation
3. Minimized operating torque, energy saving
4. Flow curve teeing to straight line, excellent regulation performance
5. Long service life, standing the test of tens of thousands opening/closing operations
6. Bubbles-tight sealing with no leakage under the pressure test
3. Manual Wafer Butterfly Valve Images:
Turbine Type Butterfly Valve DN450 with Hand Wheel BS Standard 

Turbine Type Butterfly Valve DN450 with Hand Wheel BS Standard

4.Manual Wafer Butterfly Valve  Specification:
Size: DN50-DN1000
End flange: ANSI B 16.1,EN1092,AS2129
Face to face: ANSI B 16.10
Top flange: ISO 5211
Normal pressure: PN1.0/1.6MPa(150/200PSI)
Disc: DI/ALB/Rubber lined Disc/1.2501/1.4529/CF8/Hastelloy Alloy/Monel
Stem: 410/416/304/431/17-4PH/316/monel
Seat: NBR/Hypalon/EPDM/Neoprene/NR/Wear-Resistant EPDM/Viton/Silicon/Heat-Resistant EPDM/White 5.FAQ
1. What is manual wafer butterfly valve?
A: Wafer style is the more common of the two and is less expensive than the lug style. The wafer style butterfly valve is just about the standard. It ís so common that no one even bothers to use the word "wafer" when ordering a butterfly valve. It is taken for granted that if a butterfly valve is ordered, a wafer style will be received.
2. What is the working principle of manual wafer butterfly valve?
A: A butterfly valve is from a family of valves called quarter-turn valves. In operation, the valve is fully open or closed when the disc is rotated a quarter turn. The "butterfly" is a metal disc mounted on a rod. When the valve is closed, the disc is turned so that it completely blocks off the passageway.

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Q:How do fix a stuck valve?
HI what you are hearing is not a valve but a lifter... MAYBE... Here's a couple of things that well make it tick. 1) an exhaust manifold gasket leak well sound like a ticking lifter. ( if the noise goes away after the car warms up it might be this gasket.) 2) a bent push rod well make a lifter tick ( as the tolerances would be off) 3) a bad lifter well make a ticking sound. If it is indeed a lifter then best leave it to a pro.. As the intake would have to come off to replace ALL the lifters (you can't buy just one). If its a push rod just the valve covers well have to come off.. to isolate the sound you can use a long piece of hose 3 ft. or so. hold one end to your ear and move the other around the motor compartment and see if you can tell if the sound is coming from inside the motor (lifter), inside the valve cover (push rod) or outside the motor exhaust gasket. good luck tim
Q:Motorcycle Valve Seals - 4 stroke (what is the function of valve seals??)?
A 'leak-down' test is the best bet, indicates the place in the process the compression is leaking and if it's across the valve stems than for definite the seals need replacing. Are not able to judge it via the smoke correctly as oil would be slipping previous the rings also.
Q:civic power boost valve?
While I'm not familiar with the power boost valve specifically, it looks similar to a rising rate fuel regulator which is used more for forced induction applications like turbocharging and supercharging. If you were to install this on a relatively stock car you would risk running an extremely rich mixture that the stock ecu would be unable to compensate for which in turn could cause damage to your engine. The stock fuel regulator that currently sits in your car is more then sufficient enough to keep up with simple bolt on parts and shouldn't need replacement unless you are planning on doing true engine work or forced induction. As far as comparing different companies' spark plugs and wires it would really be a matter of splitting hairs.
Q:Leaking Proportioning Valve?
First up is that the valve is not leaking oil, it is leaking brake fluid. That is bad. The proportioning valve controls the brake pressure to the rear brakes. Most of the braking is done with the front brakes and without the valve you could lock up the rear brakes on medium to hard stops and the rear end could loose traction, that would be a bad thing on a sharp turn. With that said please replace the valve I have never seen a repair kit for them. Have you looked at to GM for the part? They may also have knowledge on a conversion of the master cylinder with the valve built in.
Q:foot valve replacement?
Yes, considering they have to pull all the pipe in the well to get to the foot valve which is at the bottom of the well.
Q:are the valves in my accord bent?
Cooks has it right. Just get a compression test first. If your compression is abnormally low for a car of your age, then you can assume in your case that you have bent valves. Bending them isn't hard - I did it in a '93 Mitsu Eclipse. I missed a gear change and over-revved the engine a little. That's all it took.
Q:ATV head (valve seats)?
Without knowing actually how big the space is, I'm hampered in my answer. If the valve isn't bent, you may be able to lap the valve and seat. Your service manual should have directions on how to do this. Or you may even be able to grind it out with valve-grinding compound. I've gotten away with using valve-grinding compound heavily in some cases that probably should have been lapped. I put the valve in it's guide and attach a rubber hose and drill to the end of the valve. Then, after applying the compound to the seat and valve, I spin the valve while gently pressing on it's head. I keep adding compound as needed. I've done several this way with no problems. But if you have a big gouge you will probably need to get a lapper.
Q:what cause valve seats to creck or breck in a chevy and how much will a valve job cost?
just age mostly and any Machine shop is where to take it an d talk with them
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:In aircraft reciprocating engine, if valve spring surge happen?
Its in a car engine but the fault is near the same. The good news is that in aircraft there are mostly multi-spring valve springs to help prevent the resonance problem that can happen with a single spring. (If one goes resonant, the other one doesn't.) I think what that means is that if you have valve spring surges in an aircraft engine, you probably have a broken spring or weak on the assembly. (just a guess but if they don't go resonant at the same time then how would you get the surge?) The affect, not good. Result - rough at a certain RPM or range of RPM even temp. related Feeling - rough

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