Double flanged concentric 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:trucuspid valve... pulmonary valve??
Structure Of Pulmonary Valve
Q:what is a car valve?????
Cylinder head valves come in many designs and combinations. Their may be two, three or four valves in the head and combustion chamber that open and to let air and fuel in while the piston compresses the mixture and is ignited near top dead center. When the piston is near bottom dead center the exhaust valves open where the piston pushes the spent gasses out underneath the open exhaust valve. As the piston nears the top of the exhaust stroke, the intake valve opens to allow the air/fuel to enter the combustion chamber and cylinder bore. As the piston sweeps down vacuum is created in the cylinder and more fuel / air enters. When the piston reaches the bottom of the intake stroke, the intake valve closes in preparation for the compression stroke. Go to the Wikipedia Encyclopedia ot How Stuff Works to see how a four stroke engine operates. You'll see what the valves look like and how they work.
Q:i'm being charged $300 to replace a 75gallon water heater valve, is that too much?
What, just the valve? What valve? A stop valve in the supply or delivery line? Or the temperature and pressure valve? There's no way on God's green earth I'd ever fork over $300 for this job. I can do it myself in thirty minutes. The TP valve would take less than ten minutes. Granted I'm a handyman and I have a shopful of tools and 20 years experience. But back in the day, when I'd never done any maintenance work, I replaced my own water heater from start to finish and it only took a couple of hours. Unless there's something major going on that you're not disclosing to us, it sounds like a pretty serious overcharge. [edit] To answer your additional questions, I wouldn't pay that much to replace all three valves. The valves themselves aren't very expensive, and the only really difficult part of this entire operation is getting all the water under control to replace the drain valve. Something's going to get wet, and that tends to make homeowners annoyed and difficult customers. The TP valve is a simple wrench-in, wrench-out replacement. Water off, power off, drain below the level of the valve and out it comes. Control valve requires turning off the house's water, but less draining. Replacing the drain valve requires draining the entire heater but again it's a wrench-in, wrench-out job. Easy.
Q:Dangers of mitral valve prolapse?
There are many people with mitral valve prolapse that never have symptoms related to it and never have any problems as a result. Mitral valve prolapse can lead to the backflow of blood through the mitral valve known as mitral regurgitation. This can potentially lead to abnormal heart rhythms, such as atrial fibrillation. The concern with skydiving is that it would lead to a surge of adrenaline resulting in increased heart rate, strength of heart contractions and overall workload of the heart. If you have MVP without regurgitation, then your risk would be similar to the general population. If you have regurgitation it depends on the severity the regurgitation. If you have mild regurgitation, then it also should not be a problem. If you have severe regurgitation, then you could run into problems from the increased workload of the heart. In this case, I would suggest you discuss it with your Cardiologist. It is unlikely that you have atrial fibrillation. If you by chance do, then it depends on how well your heart rate is controlled. If there is any doubt, then ask your Cardiologist. Good luck.
Q:What are valves in a car?
There are 4 cylinders in your car. They each combust air/fuel mixture. How does the air/fuel mixture come in, it comes in by an opening in the cylinder. That is where the valve comes in. It is actuated by a camshaft. Think of it as a ball with a lump on it that is turning. So when the lump comes in contact with the valve it opens it and then springs push it abck in its original position. If you have more valves then that means less air?fuel restriction which means more torque qhich means mre horsepower WHICH MEANS A LITTLE ONLY A LITTLE BIT MORE SPEED.
Q:Tire valve stem recall....?
well really they should dont see the big deal they are like a buck each... and will take ten minutes to fix.. at any shop some places might cost you 10 to 20 bucks.. and yes if there is a recall on valve stems im sure they would redo them for free... . ive never heard of one been doing tires over 20 yrs.... rubbber gets old and dry about as fast as the tires wear out
Q:Tire valve problem?
by the time you drive around find a valve stem tool and then find a new valve core which you need to replace because it is leaking and how many times in your life time will you ever need this tool again you would be better off going to walmart tire center and have them install a new valve stem it comes with the new core and cap in 1 unit assembly
Q:will correcting of mild dextroscoliosis will affect existing mitral valve prolapse?
Q:i have valve touble on motorcycle ?
Charlie, I know it is hard to transfer a sound into a word. but valves don't knock, they clack. So if it isn't a clack it isn't a valve issue. Sadly you haven't helped us to diagnose the issue by giving the make and model of your bike. That would really be a help. I would like to help you further so if you hit my avatar you will find my email address for direct contact so I can help you further if you can't find out more help form the other guys.
Q:how do you reconnect the heater valve on a 1997 ford ranger 2.3l 4 cylinder?
Heater control valve at heater core? If so the valve is horizontal with the vacuum motor on bottom, the vacuum port pointing towards rear of engine. The heater hoses for heater core are obvious, the hoses from the engine, the hose closest to the valve cover goes to the drivers side of the valve, the hose that wraps around from the front of the engine goes to the passenger side of the valve.

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