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:What is the difference between a Hot water and Steam radiator valve?
A steam valve on a residential radiator is usually a cylinder valve, the steam rises up through the cylinder inside the valve and out through a port cut in the side of the cylinder when the port on the cylinder and the valve outlet are in line the steam flows, by turning the valve handle it rotates the cylinder to misalign the port and outlet stopping the flow. A radiator valve for a water system while identical to look at has a stem and a rubber washer which makes the seal, steam would quickly erode this rubber, however a steam valve installed in a hot water situation will work well as a balancing device, I couldn't guarantee it could be used to completely stop the flow, but for average use absolutely, you can interchange the valves, and by the way, residential steam pressure is much less than a hot water system but the steam valves are adequately rated.
Q:Leaking water valve under my kitchen sink?
The faucet is the problem, not the valve under it. If you just bought the faucet, it shouldn't have any washers in it. Washerless faucets have been the norm for 15 to 20 years now. You need to replace o rings or entire cartridges and the cartridge valve seats. Cartridges are designed to only work one way, but can be installed backwards, so pay close attention to directions that come in the package. To get the proper parts, you need the manufacturer of the faucet (Moen, Peerless or whatever) and you need to know if it's a one handle or two handle faucet and if it's a vanity or kitchen faucet. When getting these parts, you are better of going to a small hardware store or plumbing supply store. They do sell them at Lowe's and Home Depot, but the personalized, professional and knowledgeable customer service at a small hardware or plumbing supply store is invaluable if you don't know exactly what you need. The guy in the plumbing department at Lowe's may or may not know what he is talking about. If you type replacing faucet cartridge and seats into google, you will come up with several videos and how to web sites to show you how to do the job. You should also look at replacing the valve under the sink and the main, so you can shut the water off all of the way. Sometimes on the main if you just open it and close it a couple of times it will break up the lime residue on it and work properly. If it leaks externally, rebuild or replace it.
Q:Why does plumbing code require a gate valve for the main shutoff?
I agree with Ed. I have had far more problems with gate valves than ball valves. They can break in either the on or off position which can really be inconvenient. They usually break on me in the off position after performing minor plumbing repairs.I will often use the main shut off at the street if I see an old gate valve. If you are required to use a gate by local codes (I don't know your codes but here in California a ball valve is fine) put the ball valve after it and use it for your shut off.
Q:Cummins engines injector spill valve?
The fault for the spill valve is not something you can correct with timing. When they repaired or replace injectors they need to be programed into the computer so they match the other injectors. The spill valve is in the injector and is there to return unneeded fuel back to tank. If this valve does not work you could be over fueling or run the risk of fuel cooking in the injector making a mess of the spray pattern. It should be telling you which injector is throwing the code and if it is one of the two that were worked on take it back.
Q:Gummed up french horn valves?
Here are 3 options I know of - 1) take it in and have it cleaned. This can cost anywhere upwards from $40. I paid $75 last time. 2) Clean it yourself. Take out all the slides, pour a few drops of dishwashing liquid soap into each valve (one at a time). Get it all the way through, like you would when using oil. Use warm water and rinse out all the soap. Let it dry. This is very tedious, but has worked for me the couple times I've done it. 3) Like someone else said, use a thinner valve oil to semi-rinse out the gumminess. This has also worked well for me. Keep the lead pipe clean!
Q:1998 Crown Victoria Valve Chatter?
it is not valve chatter, it is called Pinging, it is a fairly common problem, what it is caused by is hot spots in the engine, or by overly advanced spark timing, i would check your base timing, perhaps even back it off a degree or two, i would also run a bottle of marvel mystery oil, or gm top engine cleaner through a vacuum line to burn out the crud that has built up, the sum total of these repairs: about 15 bucks, the savings: your engine! as for your t-bird, it was the pinging that broke the valve spring, not the tank of hi octane. hope this helps
Q:Tire Valve Stem cracked?
There are only a couple of spots that the tire / wheel assembly is going to leak. Through the valve stem or along the lip where the side of the tire meets the rim. My guess would be that they did not do a good enough job removing debris (corrosion, dirt, etc.) from the rim before they mounted the new tires. With that many flats, you should have them remove the tires and clean the sealing surface. They would prefer not to do this because it means they have to mount and balance the tire again, but it is probably the only way repair the problem. Unless they have a bad batch of valve stems, there is no way that many should fail.
Q:emission control valve?
emissions control valve is another name given for an exhaust gas recirculator valve(egr valve). This valve routes a sample of your cars exhaust gases back into the cylinder to be re-burned and therefore lowers emissions.The ports to this valve become clogged over time and can create performance issues
Q:Does mitral valve prolapse prohibit weight lifting?
Good question, excellent details! The best advice I can give you, due to the complications associated with mitral valve prolapse, I would recommend you perform a stress test. Real easy procedure, heart rate is increased, generally by mechanical motion (ig running), cardiac cycle is monitored on screen. Basically here is the problem, your flaps on your mitral valve are being pushed back into the region of your heart that feeds the contracting area (left atrium), contracting region being the left ventricle. When this occurs, it greatly increases the possibility of back-flow of blood to the pulmonary veins and back to the lungs, which is REALLY bad. Without going into further detail, my best recommendation would be a stress test. Hope that helped. Good luck.
Q:valve cover question?
Oil will not run everywhere. If you do happen to see a drip, simply wipe off what you see.

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