Butterfly Valve Turbine Type DN250 with Hand Wheel BS Standard

Butterfly Valve Turbine Type DN250 with Hand Wheel BS Standard System 1

Butterfly Valve Turbine Type DN250 with Hand Wheel BS Standard

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Loading Port:: China main port

Payment Terms:: TT OR LC

Min Order Qty:: 100 set

Supply Capability:: 20000 set/month

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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.Simple and compact construction. Small in size and light in weight. Easy transportation, installation and maintenance.
2. Quick 90 degrees on-off operation. Minimized operating torque ,energy saving.
3. Excellent sealing performance with no leakage. Long service life.
4. Wide selection of materials ,applicable for various media..
5. Flow curve tending to straight line. Excellent regulation performance.
6. Bubbles-tight sealing with no leakage under the pressure test
7. Wide selection of materials, applicable to various mediums
3.Manual Wafer Butterfly Valve Images：

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
Suitable temperature: -10~120
Medium: Fresh water, sewage, sea water, air, vapor, food, medicine, oils, alkalis, salt etc.
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. How about the Installation of the Wafer Style Butterfly Valve?
A: Butterfly valves are installed by inserting the valve between two flanges using bolts or studs and nuts to hold it all together. This type of installation, of course, makes it impossible to disconnect just one side of the piping system from the valve. That benefit is received using the lug style valve.

Q: I have a 2000 jeep grand cherokee v8 4.7L it has a stuck valve making knocking noises my question is can i still drive it !? or is too dangerous: For 1 how do you know it has a stuck valve , if you know that you know how to get it unstuck (pb-blaster ) or something like that , or is it carbon holding it open if it is you will need to pull the head becouse the head of the valve will come off and damage the piston and the block , good luck.30 years exp on cars and big trucks

Q: What is the function of valves between atrium and ventricle in the heart?thanks: the atrioventricular valves (AV valves) separates the atria from the ventricles. the AV valves perform a very important function in the heart by maintaining the blood flow in one direction. they are subjected to tremendous strain during every heart beat, and are uniquely designed to withstand this strain through a person’s lifetime. the right AV valves is called the tricuspid valve. the left AV valve is called the mitral valve. the opening and closing of the AV valves is dependent on pressure differences between the atria and ventricles. when the ventricles relax, atrial pressure exceeds ventricular pressure, the AV valves are pushed open and blood flows into the ventricles. however, when the ventricles contract, ventricular pressure exceeds atrial pressure causing the AV valves to snap shut. :)

Q: So it always seems that when I see the jet and foot valve out of a well there's a drop tube between the jet and foot valve. My question concerns this drop tube- is it necessary? I've got a leak somewhere, replaced the foot valve and still have a leak. I'm inclined to get rid of the old drop tube, it's crusty and likely to be the source of leaks either now or in the future. any reason to not just plumb the foot valve directly to the jet? Thank you kindly for useful information.: The reason for the drop tube is to possibly save you replacing a pump. All wells silt in a certain amount. Your submersible pump can withstand a certain amount of this fine silt but if it gets to be half-submerged in the stuff it will burn out. With the drop pipe in place, the foot valve will plug up first, giving you warning and a chance to shorten the pipe above the pump. Rather than fitting the foot valve directly into the bottom of the pump, you would be better advised to replace the drop tube with a new piece. Also be sure to test your foot valve while you have it out of the well. Some are faulty right out of the box. I always screw on a fitting with a snifter valve that allows me to put 150 psi of air on the foot valve over night. If it doesn't hold that, it shouldn't be at the bottom of a deep well; it's just too much darn hassle pulling them.

Q: My car may have warped valves. What does this mean? Can it be fixed? If so about how much? And how does this happen in the first place? Anything helps! Thanks!: takin the head off isnt the only way to tell if their warped.if ur engine doesnt have good compression on each cylinder then u kno its bent.or a broke rocker arm isnt openin the valve.the heads may need machining after a bent valve. but i think they can also warp not jus bend by bein hit or burnt.warped by pullin cold air where it dont belong

Q: if i put a power valve on my honda xlr 125 would it make my bike have faster acceleration: A power valve is a device that manufacturers fit to the cylinders of highly-tuned 2-stroke motors. It's purpose is to vary the timing of the exhaust by changing the height of the exhaust port(s). This is done in order to allow these motors to retain some bottom and midrange power. A Honda xlr is a 4-stroke so you cannot fit a power valve to it. The exhaust port in a 4-stroke is in the cyliner head, not the cylinder wall, and it's timing is controlled by a cam acting on a poppet valve.

Q: What is the primary function of valve seals?: Valve seals are placed over the intake valve guides so oil will not be drawn into the combustion chamber on intake stroke.

Q: My friend is having 3 valves in her heart replaced with pig valves. Her dr said that putting in human valves raises the risk of her body rejecting them but wouldnt your body also reject a part form different species? And if they only last a few years why use them at all? shes all freaked out about the surgery so I dont want to ask her too many questions: This Site Might Help You. RE: why do they use pigs heart valves for humans? My friend is having 3 valves in her heart replaced with pig valves. Her dr said that putting in human valves raises the risk of her body rejecting them but wouldnt your body also reject a part form different species? And if they only last a few years why use them at all? shes all freaked out...

Q: Ok i dont know much about cars so if anybody could help out with this id appreciate it. Do i need to take my car in to get the PCV valve replaced or can i buy it and have it done in my driveway?Thanks....: The PCV valve is about 3 inches long, just pull it out of the valve covers and replace it with the new one!!!

Q: I got a '99 bmw 740il that is leaking and burning oil. It shoots smoke out the exhaust when i first start it from burning oil. And the car misfires when idling, i did a tune up and the spark plugs were soaked in oil causing the tune up not to help anything for long cause it was missfiring the next day. Does this sound like the valve stem seals? I bought new valve cover gaskets and grommets and im gonna replace those this weekend, im hoping that will help. Comments please: The symptom of bad valve stem seals is blue smoke after sitting overnight. But once that smoke is gone, a bad valve stem seal won't have any effect on engine running or idling. And it certainly won't cause a misfire. Worn valve guides can do all those things. You have far more serious problems than just valve stem seals. Get a wet/dry compression test and a cylinder leakdown test to isolate the problem to either valves or rings.