wafe type butterfly valve

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Product Description:


Double flanged Double Eccentric Butterfly Valve
DN100 ~ DN2000

Technical Specifications

- Design and manufacture: EN593, EN1074-1 and 2

- Face to face dimension: EN558-1 Series 14 (DIN3202 F4)

                                              EN558-1 Series 13 (BS5163)

- Flange dimensions and drillling: EN1092-2 PN10/16/25

- Size range: DN100 - DN2000

- Max. working pressure: 1.0/1.6/2.5 MPa

- Inspection test: EN12266

- Working temperature: -15°C to +80°C

- Suitable medium: water

Main Fetures

- Double eccentric disc reduces seal wear and torque

- Body seat ring is welded directly on the body

- Bi-directional flow and low head loss

- Disc sealing ring to be replaceable on pipeline without dismantling the valve

- Body and disc inside and outside epoxy powder coated (min. 250 microns)

- Opening and closing indicators are provided

- Coupling flange for electric actuator in compliance with ISO5211

- Gearbox and electric actuator operation available

Main Parts and Materials

Body and disc: ductile iron EN GJS500-7/400-15

Shafts: stainless steel AISI 420

Body seat ring: stainless steel AISI 304

Disc sealing ring: EPDM or NBR

Retaining ring: stainless steel or ductile iron

Shaft bearing: Du bushes (self lubricating bushes)

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Q:Someone help, I have Valve problems!?
The valve with the biggest opening wins. The type valve with the biggest opening is called a ball valve. It is also the quickest one to open because you only have to turn the valve 90 degrees. Th answer to you problem is, get a BIGGER VALVE and bigger lines. Thmyth bustersrs use 6 valve which are 500 times bigger than 1/4 inch so they are 100 times more powerfull.
Q:The plastic drain valve on my water heater drips. Unable to stop the drip, I have placed a hose cap on it.?
To hold water in the tank your plastic drain valve should usually be closed. It does not matter if the water is held in the tank by a valve or a cap. A metal cap would be better than a plastic. You could also drain the tank and replace the gasket in the valve, but that is a lot of work for little benefit. Had not though of that. The drain valve is the one at the bottom of the tank. If this is a pressure relief valve, yes it would be very dangerous to cap it. The pressure relief valve is located near the top of the tank.
Q:Do veins in the head and neck contain valves?
Valves counteract the pull of gravity. They also prevent blood clotting. Yes, because if they didn't, the blood could flow too fast and pool in your veins, which causes blood clots, which isn't good. So to monitor the amount of blood going through veins in the head or neck, the valves close, and open. Hope I helped. -Selene
Q:Explain terms associated with valve timing?
HI You answered it your self... exhaust valve opening (EVO) is when the exhaust valve opens.. and the same for the intake (IVO).. When the EVO happens the motor pushes the exhaust (burnt fuel) out of the motor when the IVO happens it sucks gas into the motor to get burned and make power.. Exampe of a 4 strock motor. 1) piston goes down , sucking in air and fuel (IVO) 2) piston goes up compressing the air and fuel spark plug fires ignighting the fuel 3) piston goes down turning the crank powering the car from the explosion of Fuel. 4) piston goes back up pushing the spent fuel out. (EVO) then repeats. On a 4 cylinder car this happens 4 different times on an 8 cylinder car 8 different times and on 6 cylinder car 6 different times. When one cylender is firing another well be coming up to push out its spent fuel and another well be going down drawing in fuel and so forth.. good luck tim EDIT IVC = intake valve closes EVC= exhaust valve closes
Q:Alternate valve oil for trumpet?
I found vasaline worked if you're on a tight budget, but baby oil works better.
Q:is it safe to be pregnant even if a woman has Mitral Valve Prolapse?
My daughter was diagnosed with MVP at age 14. She has had 5 pregnancies, 1 miscarriage and 4 deliveries. That's 4 deliveries in less than 5 years. The obvious answer here is to talk to the OB that will deliver you to have your particular case evaluated since we don't know all the details.
Q:What is a flow valve?
google repairing flow valve on ice maker it is there.
Q:Is it safe to ride a motorcycle with tapping valves?
Noisy valves are better than quiet ones. Quiet means the valves are not fully closing, and exhaust gases will squeeze out the intake and exhaust ports causing burning of the valve seats. Shouldn't hurt too much to ride it until it's convenient for you. Keep an ear out, if it starts to get louder or somehow changes suddenly, you'll probably want to take it in right away.
Q:How to adjust valves on Caterpillar C15 on-highway engine?
c15 don't need to remove jakes just back off valve actuators and jakes before adjusting valves they need to be set with overhead to but you cant adjust till valves are adjusted first. I think valve actuators are 20 and 3o for jake but mite want to check first
Q:Symptoms of a bad idle control valve?
Could be.. Also could be dirty. Easy fix, remove the valve and spray carb cleaner in the hole.. Using a small brush, clean the bore that the valve rides up and down in. Also, inspect the valve while it is off the manifold. Harder fix: After cleaning the bore, replace valve with brand new one. Your car will have to relearn the idle after starting with the new valve or after you put the old one back in.. Start car, but do not put it in drive or give it any throttle until the computer has finished making adjustments. - Dave. (Long Island, NY)

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