wafe type butterfly valve

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Specifications

Double flanged Double Eccentric Butterfly Valve
PN10/16/25
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)

Q: I saw some other answers. I figure the relief valve needs replacing, ok no problem, but exactly how much pressure are we talking about here? what is the correct procedure to shut this thing down to replace the valve?: First if you follow the correct procedure the pressure is no problem. 1 Kill the power or gas to the heater-very important for electirc elements will pop if not done before water is drained. 2 Hook up hose to drain on the bottom and open it up to flow water outside of home. 3.Open hot water valve on tub and sink to allow water to drain after you shut off the main water supply. 4.Shut off the main water supply and let tank drain for an hour. 5. Use a pipe wrench to remove old pressure relief valve. 6 Pipe dope new pressure relief valve and install. 7Open main water vlve and close and remove water hose on drain. 8Let water flow out of tub and sink for 5 minutes after air has bled out. 9Turn system back on and be sure check for leaks.

Q: Surly Pilots don't just switch the fuel selector valve of mid flight: It is standard procedure if you are going to crash to reduce risk of fire. Also, with the type of fuel system the Piper Saratoga has, the engine will run for six minutes with the selector in the off position and cannot be selected to off accidentally.

Q: Serious answers only please. I have a 1995 Ford F-250 XL 5.8L 351 c.i. engine. My check engine light comes on periodically when I drive. When I bought the truck a year ago the gas mileage wasn't too bad, about 9-10 mpg. I've only put about 3,000 miles on it this past year, and now the needle drops just driving it across town. I work at a Chevy dealership, and I've worked at another Chevy dealer as well as a Ford. I've always done my own work on my cars and am currently restoring a 1967 Mustang, so I have decent knowledge under the hood. I scanned the truck and it has a stored code for EGR valve voltage too high (stuck open). How bad could this be hurting my gas mileage? It's $160 for the valve and sensor even after my discount, and being a college student that's a lotta $ to pay. I'm selling the truck and need it running perfect when I do. Please, serious answers only, and help is greatly appreciated!: EGR valve stuck open will cause a serious dent in your mileage and performance. At $160 bucks you will be saving yourself alot of money by replacing it. I would go to a local junk yard and find one on a wreck. though you dont know what you are getting going that route you could save alot of money getting another egr valve that way and solve your problem to boot. you just ned it to work long enough to sell it so maybe that would suffice.

Q: Slow songs are a major factor of this this lagging sound. Note to Note. I Oil my Valves often and they still are slow. Am I just not using enough air? Help me Experts!: Clean your valves properly. Use dish soap and a light plastic scrubbing pad and clean the inside the cylinder and the valve. If that doesn't work, try again using rubbing alcohol to clean the valve. Make sure that the valve guide and the little channel it fits in are clean. (use a toothpick to clean that place) You might also consider getting new springs. More air will not speed up the valves but it will help you maintain a constant sound.

Q: I replaced the valve cover seal and I wanted to know the torque specs for the valve cover bolts and the sequence it should go: A followup question... if I have already tightened the valve cover down, most likely to the incorrect torque, then drove it around for a couple of miles then let it sit for a week. Will I be able to go back and loosen the valve cover then re-tighten them to torque specs or do I need to start with new gaskets? No sealant used. The gasket was the metal and rubber combo type.

Q: I just got my water pump replaced on my Peerless boiler. Now my backflow valve is always dripping. I am unsure if I should cap it off or if the dripping will stop over time. It seems that there is some pressure comming from the vent. What should I do??: The seal may be worn. Call back the company that installed the pump...

Q: so here are the details. i've been using my trumpet for about 6-8 years now and 1 if not 2 valves get stuck on my trumpet. the problem is not the oil as i have over oiled them too and no go. its that when i try to put my valves back in their place and twist them they don't stay in place,move ,and making either my valves stuck or making my trumpet not do a sound. what should i do? repair shop or buy a new one? i hear the clicking sound when i put them back but still all that does is either make my valve more sticky: Trumpet valves have metal or plastic tabs that fit into grooves on the casing. They keep the valve in allignment. It sounds like the tabs on your horn could be broken. I suggest letting a repair shop do the work.

Q: does it moves up and down with the valve stem??: Poppet valve is the commonly used term for a standard, mushroom- shaped engine valve.Obviously, the mushroom head is part of the valve, so yes, it does move up and down with its stem.

Q: My third valve won't move at all. I haven't played my trumpet in a while and I tried to oil it to get it to unstick but it still won't move at all. People say to screw it off but I can only unscrew the little cap at the bottom of the valve where you push in, not the white button at the top. Help please! Thank you so much! =]: on the top of the valve there is the screw that you turn to open the valve to oil it. if this screw wont turn gently tap the edges of it with the rim of your mouthpiece, and make sure that you get the entire screw cap. if this doesn't loosen it enough to remove the cap, then repeat while hitting it at an angle in the direction that it needs to turn. if this doesn't work take off the bottom cap and drip valve oil up though the bottom to drip up to the top cap and continue with the tapping process. if it still wont move, you need to take it to a shop. once the upper cap is loose, the valve still wont move, this is when you take off the bottom valve cap (if you haven't already) and fully remove a different valve that has already been oiled and push it up through the bottom of the stuck valve, this might be hard to do, and you might need to put in a lot of valve oil into the bottom to get it to move. once this valve is removed, thoroughly clean the valve casing and the valve itself, and oil both before replacing the valve. Hope this helps.

Q: To control a double solenoid valve, what do you recommend to use in my PLC program .... Do you recommend to use the SetReset coils or to use the normal coils?: You need to know how the solenoid valve operates. Some remain in position with no current to either coil. Others are designed to return to a center position when coil voltage is removed. Still others require sustained voltage to a coil to keep them from drifting to an undetermined position. NONE of the solenoid valves I have looked at will operate properly with voltage applied to both coils, so your PLC program will need interlocks to prevent this condition. Use of Set Reset coils is not really necessary unless you have other considerations which would make their use preferable. Sorry not to be more helpful, but in this case, knowing the application and hardware is essential..

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