DCI Double Ball Air Valves

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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:Question about bicuspid valve...?
Yes, some studies have found Bicuspid aortic valve to be hereditary. Some studies show that the incidence of bicuspid aortic valve can be as high as 5% in families affected with the valve issues. In the UK there is no routine screening for people with relatives who have BAV. If you develop any symptoms or problems then of course see your GP again.
Q:Subs killing EGR Valve?
next time state year/make/model/mileage. most egr valves operate via vacuum. your subs can't affect a vacuum operated egr valve. if the o2 sensor didn't help out, you probably have a bad vacuum hose somewhere. that will cause the system to go into havoc because the car computer can't compensate for the excessive air being sucked in. a cap does not help with anything except for a loud THUMP. the THUMP causes a voltage spike and stresses the charging system. the cap takes care of the thump safer, it's not a complete solution.
Q:what is an air control valve, used for air line tubing?
The air control valve is for doing exactly what the name implies: controlling the air flow. IT allows you to reduce and regulate the flow of air as needed. They are super handy on multi-tank systems where tanks with shorter air lines get more air and need to be turned down to equalize all the tanks. They are also handy if you are running multiple air stones or air driven decorations off the same pump as it allows you to adjust flow to each device so one it not overpowered and other lacking in flow. The air check valve is the one that prevents water from heading back down the line in a power failure. A air control valve could do this, but you would have to manually turn it to off so the water didn't flow back, where a check valve is automatic and needs no human intervention.
Q:My son has a Bycuspid Aortic valve....does anyone else...?
A bicuspid aortic valve is not necessarily a problem - a normal aortic valve has three cusps, and your son only has two. Having only two cusps is not a big deal. The mitral valve in the heart naturally has only two cusps, so three cusps are not needed for a heart valve to function. The advantage of three valves is a slight increase in efficiency, but the difference between a normal valve and properly working bicuspid valve would only matter to a professional athlete. If the aortic valve closes almost completely, there is nothing to worry about. Since he has a heart murmur, its possible that it is caused by having only two cusps, but people with three cusps commonly have murmurs. There is no reason to get the valve replaced simply because of only two cusps. What matters is the level of aortic valve regurgitation. If regurgitation is not significant, your son has a normally functioning heart. Even if he had a moderate or high amount of regurgitation, it still might not have enough effect to warrant surgery. There are tests to measure regurgitation.
Q:Pitted Exhaust valve on generator, can I just replace valve?
There is no need to replace head if the seat is good. Blue smoke indicates to rich a fuel mixture,white indicates oil consumption.
Q:What causes burnt valves?
Usually a poor fuel/air mixture... running too lean etc... sometimes faulty timing can aggravate the issue as well. Exhaust problems are known to cause this issue in some cases... but so you know, there is a multitude of ways to burn a valve. FYI - Just replacing the valve will not fix the underlying issue... you will end up with the same problem. Once done, you need to start with your fuel and intake mixtures. - Good Luck!
Q:chevy valve ajustment?
my first engine in my 57 chevy sure miss that old thing still kicking myslf in the butt for letting it go. there are two adjustments hot and cold, is the engine running,if so just pull the valve cover off and with the engine running just adj the 5/8 bolt on the rocker to take the tapping out at the same time listen to the sound of the engine for over adjustment
Q:Biology help!! What is Atrial valves?
I've heard the term sometimes (though rarely) used instead of atrioventricular valves, the tricuspid (right) and bicuspid valves.
Q:Mitral Valve Prolapse Hereditary Info?
Mitral Valve Prolapse Hereditary
Q:Where can i find angle valve for sink?
If you're looking for a valve that attaches to a 1/2 iron pipe coming out of the wall, and then will feed to 1/2 copper tubing, then you're looking for- an angle stop, 1/2 female iron pipe to 1/2 compression. Just about any good hardware store will have it in stock or be able to order it, just be sure that they know what you need. I've often found that using visual aids,like a piece of pipe in one hand, and a piece of tubing in the other, with an empty space, waiting for a valve, between them, can be an invaluable aid to communication. Don't even try to cut and adapt a braided hose. The stainless braid contains a (relatively thin) rubber hose. Without the braid to reinforce it, it will burst. If you need to adapt plumbing, there is always a way to get water from point A to point B. The challenge is finding the most elegant route.

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