wafer type butterfly check valve

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Specifications

Wafer Type Butterfly Check Valve

PN10/16/25
DN80~ 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)

Shaft bush: gunmetal

Q: can you spray WD-40 on it so you can turn it off?: What kind of valve? Water? Gas? If it's a gas valve, LEAVE IT ALONE and call the gas company or a plumber. If it's water, if it breaks it won't kill you, but it can make a huge and expensive mess. First, are you sure that you're turning the valve in the right direction? When facing the valve, turn it clockwise to turn it off. If that's not the problem, then using WD-40 or other petroleum based product might work, but you have to be patient with it. Let it soak in and give it time to work dissolving and loosening rust or general grunge that might be freezing the valve. There are other products developed specifically to loosen nuts and bolts, but if you don't have easy access to an auto parts store, then try this. Spray the valve generously, wait 30 minutes, work the valve gently back and forth, spray again wait 30 minutes, work it again, etc. until the valve loosens. Don't force the valve or you'll snap it.

Q: My mother was dx'd with Mitral Valve Prolaspe 20 years ago....she use to take meds for it. My question is she is having very bad fatique symptoms.. uld this be caused from her MVP getting worse???: first of all, if she is on atenolol (tenormin) then you have to take a pulse before meds and hold med if it is 60 beats per min. if she had trouble with her meds and stopped them for this reason then she should get back on them, and yes mitral valve prolapse is fairly common but is not something you want to ignore or stop treatment for, if she if feeling fatigued she should get checked again, she could have other heart problems. plz have her see a cardiologist ASAP

Q: she 13 and shes always sleeping what is a leaky valve there not telling me enough for me to understand and im a nurse tech im scared for her: nothing unless it is a problem like how big is it?does it cause symptoms dont worry till you have to my dad has one and never a problem ask your doctor to know forsure

Q: I saw that they sell a kit to block off the egr valve in my dodge neon. Since this was on a performance site what will this do? Will blocking off the valve give me more horsepower? Should I do it or not? Thanks: i own a repair shop,and it wont give you much more horse power if any,all it does is stop the egr valve from working ,the kit allows you to remove the valve and put a block off plate on it,some say it helps a little i haven't noticed much of a difference in the vehicles that have them on,they just don't recirculate the exhaust gases like they should,which causes any car to fail an emissions test,that's about it,good luck,i hope this help,s.

Q: I'm a 68 year old male. i've had mitral valve regurgitation all my life . recently an echocardiogram listed it as 3 plus. I'm in otherwise good health and continue to jog 3 miles three times a week at about a 9 minute mile rate. Is surgery advised.: Have you asked your Cardiologist this question as well as your Primary? I do not know what the reading indicates...sorry!

Q: Well I had a Anginogram that said I have Mitral Valve Stenosis with the LVEDP was Moderately Elevated and My Right Ventricular Moderately Elevated and My Right Atruim is Moderately Elevated what do all this mean I see my cardiologists in two weeks to go over things. Oh yes they don't say how much the Mitral Valve is narrow.: Not sure I understand the question. Stenosis just means hardening, so if your valve is stenotic, your heart is having to work harder to push the blood through the valve. This would cause your left ventricle to enlarge to compensate for the increased demand.

Q: A friend of mine is having open-heart surgery next week to replace a heart valve. He needs to decide whether he wants a mechanical valve or a biological one. He is 28 years old. Which would you choose and why?: Always a tough call. You might want to see if you can find a copy of Lewis Grizzard's book, They Tore Out My Heart and Stomped That Sucker Flat, which was about both his aortic valve and his ex-wives. Unfortunately, he died from surgical complications with I think his third valve replacement, but you needn't tell your friend that part.

Q: I have a intake valve leakage in both my car and truck. If there some sort of quick fix i could use to stop the leakage for about 1 month.: I think your confused. The intake valve lets fuel and air into the combustion chamber, there is no antifreeze held in by the intake valve. If you have an antifreeze leak that is visible on the outside of the engine, you can trace the leak to the source of he leak and repair it. If you are not mechanically inclined, I would take the vehicles to a reliable shop. ASE Master Tech 30 + yrs. Retired.

Q: Hi, this is a part 2 question to the one I posted last night. After turning the water shut off valve on my toilet back on, it didnt start to hammer till about 1 min pasted. When the hammering is happening I look in the toilet tank and see air bubbles coming out of the base of the fill valve and the water coming out of the fill tube isn't smooth and flowing its kinda step wise/ in intervals. I forgot to mention that I live in an apartment, does this affect anything?My official question is, is this an air bubble problem or is it a rubber gasket/ rubber seat problem?This is a new building only about 2 yrs old, so parts can't be that bad right?: Air in lines. Leave valve on and push float down manually til it runs smooth.

Q: I am 31 and just discovered I have severe Mitral Valve Prolapse (Heart probelm). I probably have to have surgery. I have been healthy all my life and I am a little scared. Anyone had surgery for it? What can I expect??: yes. In Feb of last year. Had a gradually worsening valve and regurg. Had it done at UVA teaching hospital by an excellent surgeon and 2 doctors who were months away from being certified themselves. IN at 6 am, spent most of the day in surgery, stopped my heart, cut open my breastbone, opened my heart, sewed in a ring and trimmed the valve, closed and restarted. Spent a week in hospital; three weeks at home recovering and was released to come back to work at a very low physical demand (and driving a car with no airbags). Couldn't lift or pull anything for a good six months being cautious mostly about the wires holding my breastbone together. Was on blood thinner for about 45 days and on severe pain meds for about 30. HAd a little fluid develop on a lung that eventually cleared, and some anemia issues that also creared up. After 6 month, my cardio told me it went well enough I didn't have to see him again. Year later, only real side effect is some residual fatigue (im 51) and my breastbone gets sore when I'm tired or overstressed. I'm not a smoker and they said this was textbook. No worries man; you'll blow thru it

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