• Turbine Type Butterfly Valve DN450 with Hand Wheel BS Standard System 1
  • Turbine Type Butterfly Valve DN450 with Hand Wheel BS Standard System 2
Turbine Type Butterfly Valve DN450 with Hand Wheel BS Standard

Turbine Type Butterfly Valve DN450 with Hand Wheel BS Standard

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China main port
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Min Order Qty:
100 set
Supply Capability:
50000 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. 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)
Body: CI/DI/WCB/ALB/CF8/CF8M
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.

Q:I am having a leaky valve is that normal? the doctor said that it is normal what do i do?
Many of us have leaky valves that do not require treatment...only when it becomes more leaky will it cause problems and you would benefit from treatment. Its pretty common to have a slightly leaky valve I had one and so do my 3 sons who are 13, 16, 18.
Q:i have a 98 ford escort SE. oil spils out the dipstick. we think its the pressure release valve. sadly we dont know where that is. any imput would be great
Yep...pcv valve. Couldn't really tell you where it is on a zetec but there should definitely be a haynes for your car (check your local library). Otherwise, other things (NOT RECOMMENDED!) you can do is release the crank/head pressure by drilling a hole through your oil cap threading a fitting on there and attaching a breather filter. It won't look good but it will work if you can't get to the valve. But you'll have to replace the oil cap once you actually fix the problem.
Q:Is it posible there is underground valves? I looked all over my yard and can only find2 valves.???
Factor is, we weren't there, and nothing is recorded about it, rather then what you're quoting. As for evidence - the earth sure has shifted around rather a lot because the opening. If there was once a first-class flood, when the waters gushed up from the deep as in a nice catastophe, tossing things about into layers far and wide the earth, the evidence won't appear like what you are watching for. What are you looking to disprove or show by way of this question?
Q:does that mean it doesnt work?, how can i tell if the egr valve works still?
The EGR valve needs to be closed at idle. There should be suction in the hose, opening the valve only at cruise speed. On SOME EGR valves, you can stick your finger in the diaphragm and open it manually. The engine will sputter when you do this. I saw a tester do that at a smog check place. Otherwise, they have to use a little device that hooks up to the valve and sucks on it to test it.
Q:And' the valve leaks......Can the valve be unscrewed from the tank for replacement? Or can the valve be serviced with a new gasket perhaps?
i would not worry about replacing the wsher inside the valve...U can go to about any home improvement store and just buy a new valve for around $10...so if they have a quarter turn valve...those will serve u best in the future plus it is a ball valve which doesnt use a washer but a ball inside turn so it is a better seal...just drain the water heater then unscrew the old one and put pipe sealant on the thread of the new one and just screw it back in and fill ur water heater back up and ur done..
Q:What exactly is a flow valve for an ice maker on a refrigerator? Any idea what it would cost to replace it? Is it easy to replace?
A flow valve is a type of electronic solenoid that controls when how much water goes into the ice maker. I'm not sure if your ice maker sells the part or not, you can check online call your manufacturer. It might actually be easier to replace the ice maker. I would guess that ice makers cost somewhere around $50 - $75 are pretty easy to do yourself. I hope this helps.
Q:how hard is it to clean the egr valve on my 2002 Chevy Malibu? if you can give step by step or possibly a website/YouTube video link. thanks
Cleaning it could make it worse then your experiencing now, but if you want to here's the steps. There are two bolts holding the EGR val;ve down. Remove them, and use a can of carb cleaner to clean the carbon out of the two ports that are in the valve. Reinstall with a new gasket and run the car. If the check engine light comes on replace it. I recently got a EGR valve (not recommended but they work) from a local wrecking yard for my folks '99 Venture 3.4 ltr motor, replaced the one on the van because it was throwing the EGR code and it worked fine. No more check engine light.
Q:My fiance needs his aortic valve replaced. He is 40 yrs old otherwise healthy. I am wondering how long he will be in surgery, how long he be in the hospital and any other info about having this surgery.
This is major heart surgery that is done on bypass (cardiopulmonary bypass, meaning the heart and lung machine. This is very serious. He may be in the hospital for a week or more. He may need cardiac rehab to gradually be able to do simple things.
Q:I have an 98 Mitsubishi Eclipse rs and its a little jerky while driving and i think it might be the PCV valve but I don't know where it is located.. where is it? and would this cause the check engine light to come on?
Your okorder okorder , which covers all Eclipse/Talon models.
Q:i was filling the tire on my car and the valve stem completely came out when i finished, quickly deflating the tire. i could push it back in but then the process repeated itself when i tried refilling it again. is there part of the stem i'm not seeing. the stem that i saw was long and straight and threaded. advise, thoughts? thanks.
Tubeless Tire Valve

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