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:Valve seat removal?
use the valve guide puller
Q:Hot Water Heater Pressure Valve?
Tap that valve gently a couple of times with a hammer. Those valves are rarely used and sometimes stick. Remember, I said gently. If that doesn't make it close, replace the valve. Keeping the cold water shut off prevents the heater from filling. If there's enough pressure in there to keep allowing hot water out, it will eventually lower the water level in the tank and could damage the heater. Here's how to fix it. If it's a gas heater, turn the thermostat to pilot. Open the drain and lower the water level in the tank, or use this opportunity to drain it completely and flush the system. Remove the old TP (temp and pressure) valve and take it to the hardware store to use as an example for a new one. Replace the valve and hook up the drain. Close the drain valve near the bottom of the tank and open the cold water valve on the top. You can leave the TP open until water starts to come out of it, to allow you to burp the system. Now, turn the heater back on and set the temp to 120 degrees f. I'm a little concerned that the heater is not plumbed to drain into the house plumbing or at least to the outside where it won't cause any water damage. Good luck.
Q:toilet flooded, shut off water at inhouse shutoff valve. now why wont it come back on?
something might have went up into valve assy inside toilet. try to check on that, if that doesn't help, then replace the assy with a Fluidmaster 400a kit.
Q:Wiring water Level Switch to Solenoid Valve?
I okorder.com/ and if they dont have the answer for you, then go to the parts page and buy the book. - its cheap
Q:Swap valve covers on Honda?
maybe you can get the cover at your local junk yard. Check and ask around. Since Hondas are so abundant, someone is bound to have it. If not, you can always go to the Honda Dealer. They'll order it in for you the next day. It might be more expensive but it'll be new and they'll be sure to have it. You might also want to check the fit to make sure they're compatable. :)
Q:Mitral Valve Prolapse?
What is mitral valve prolapse? How does a patient with MVP feel? How is mitral valve prolapse diagnosed and evaluated? What is the treatment for MVP? Mitral Valve Prolapse At A Glance What is mitral valve prolapse? Mitral valve prolapse (also known as click murmur syndrome and Barlow's syndrome) is the most common heart valve abnormality, affecting five to ten percent of the world population. A normal mitral valve consists of two thin leaflets, located between the left atrium and the left ventricle of the heart. Mitral valve leaflets, shaped like parachutes, are attached to the inner wall of the left ventricle by a series of strings called chordae. When the ventricles contract, the mitral valve leaflets close snugly, preventing backflow of blood from the left ventricle into the left atrium. When the ventricles relax, the valves open to allow oxygenated blood from the lungs to fill the left ventricle. In patients with mitral valve prolapse, the mitral apparatus (valve leaflets and chordae) becomes affected by a process called myxomatous degeneration. In myxomatous degeneration, the structural protein, collagen, forms abnormally and causes thickening, enlargement and redundancy of the leaflets and chordae. When the ventricles contract, the redundant leaflets prolapse (flop backwards) into the left atrium, sometimes allowing leakage of blood through the valve opening (mitral regurgitation). When severe, mitral regurgitation can lead to heart failure and abnormal heart rhythms. Most patients are totally unaware of the prolapsing of the mitral valve. Others may experience a number of symptoms discussed below. The mitral valve prolapse (MVP) syndrome has a strong hereditary tendency, although the exact cause is unknown. Affected family members are often tall, thin, with long arms and fingers, and straight backs. It is seen most commonly in women from 20 to 40 years old, but also occurs in men.
Q:Bicuspid Aortic Valve...?
My daughter was diagnosed with this same thing when she was 10 days old. It has been a miracle that she has not needed any medication or surgery. She meets with the cardiologist 1 time a year. They told me if she stays as stable as she is she will not need surgery. Maybe if your condition stays as stable as it is now, you will never need surgery. I know that when they repair a VSD they do open heart surgery and put a patch over the hole that is in your heart. Sometimes these patches fail and they do surgery 2 or 3 times and it is common. I know that Bicuspid Aortic Valve is an inherited abnormality and that it becomes more sever in your 30's and 40's. Most patients with bicuspid aortic valve whose valve becomes dysfunctional will need careful follow-up and potentially valve replacement in their third or fourth decade of life. Patients with bicuspid aortic valve should be followed by cardiologist or cardiac surgeon with specific interest in this valve pathology. Average lifespan is similar to that of those without the anomaly. In many cases, the condition will cause no problems. However, especially in later life, a bicuspid aortic valve may become calcified, which may lead to varying degrees of severity of aortic stenosis and aortic regurgitation, which will manifest as murmurs. If these become severe enough, they may require heart surgery. I hope this helps and good luck with everything.
Q:What is a flow valve?
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:Leaky Aortic Valve???
1. okorder.com/.. that will tell you what to do to keep yourself healthy and help keep te regurgitation mild. Thankfully its just a mild heart problem, so you should be fine for many years. Im 16 and i was born with Aortic Stenosis, and a Bicuspid aortic valve, which led me to develop Aortic Regurgitation(leaky) and an Enlarged aorta. I havent had surgery yet, but my conditions are getting slowly worse and in a few years i will need surgery. I go to a camp for kids with heart disease, and some of my friends have very severe heart problems that cause them to get heart transplants, or tons and tons of surgery and some have even died. :( So if you have any questions or anything feel free to email me(go through my profile)
Q:What are the advantages of having larger valves over two smaller ones?
All else being equal, larger valves equal less pumping loss and more top end horsepower. The problem with large valves is that at lower engine speeds, the gas velocity is too low to fill the chamber quickly and efficiently thereby compromising low-end torque. The answer to this dilemma is to have multiple small valves. This is the primary reason for current high performance engines being equipped with multiple valves per cylinder.

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