Butterfly Valve DN80 Turbine Type 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. The material of valve body: cast iron, cast steel, cast stainless steel and so on.
3. Pressure grade: 1.6Mpa, 4.0Mpa, 6.4Mpa
4. Connecting type: flange coupling
5. Temperature range: normal temperature -20---230ºC  the thermal slug type -60---450ºC
6. Operation form: automatic open or close
3. Manual Wafer Butterfly Valve Images:
 Butterfly Valve DN80 Turbine Type with Hand Wheel BS Standard
 

Butterfly Valve DN80 Turbine Type 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)
Body: CI/DI/WCB/ALB/CF8/CF8M
Disc: DI/ALB/Rubber lined Disc/1.2501/1.4529/CF8/Hastelloy Alloy/Monel
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. When the valve is fully open, the disc is rotated a quarter turn so that it allows an almost unrestricted passage of the fluid. The valve may also be opened incrementally to throttle flow.

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Q:Turning on the main water valve?
after turning the valve back on. Is there another valve upstream that was turned off as well? +
Q:pro's and con's of mechanical valve vs tissue valve...?
This is definitely a question for your cardiologist. I can tell you that mechanical valves will require a higher INR and they will have more problems with bleeding. A tissue valve won't last as long as mechanical, and may have to be replaced sooner.
Q:Mitral Valve Replacement Surgery?...?
Haven't had it done before but: It's a pretty involved procedure. Patient is put under general anesthesia and is usually on the cardiopulmonary bypass machine (heart-lung machine) since you can't really replace a heart valve if the heart is beating. mortality for full valve replacement according to wiki is 6-8 percent, prob less than 5% for young healthy patients. Recently, many people have been doing the procedure laparoscopically. Patients are put into the surgical ICU for typically 1-2 days after the surgery. You can be discharged about a week after. Obviously there's risks, this is a very involved and definitely not a simple procedure. However, the cardiothoracic surgeons do these procedures every day for their entire lives-they're very skilled and qualified. good luck!
Q:What's a suitable valve for this scenario?
I okorder.com/
Q:Tire valve stuck on my bike?
you will need to undo the valve and straighten up the tube, then try to pump it up again. The wosrt case seario you may need a new tube, which will only cist about $5
Q:Coping with Mitral Valve Prolapse?
I also have mvp..diagnosed 15 years ago. I've been taking magnesium for over a year now and notice a big difference in the amount and duration of my mvp episodes. Also drinking plenty of water helps a lot. Good Luck
Q:trumpet valve placement?
Put the correct valve in the valve case. (There is usually a notch that guides the placement, but it is not always accurate enough.) Blow gently into the trumpet, (you don't need to play, just blow as you do to clear the spit valves). If you feel a resistance, rotate the valve until the resistance is gone. When there is no resistance with the valve up, depress the valve and blow again. There should be no resistance there either. Repeat with each valve.
Q:Question about valve cover gasket?
Valve cover gaskets aren't really affected by miles. They either don't leak or they do. I'd just snug it up a bit. If it still leaks you can put some sealant on the gasket, but only if you can lift it off without wrecking it since you'd have to seal it on both sides. Don't tighten it too much or you will make the leaks worse.
Q:mitral valve regurgitation In Toddlers?
my nephew had it and needed surgery.
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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