Concentric Butterfly Valve ISO5211

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Features:

1. Small in size, light in weight, easy installation and maintenance.

2. Simple and compact construction, quick 90 degree on-off operation.

3. Minimized operating torque, energy saving.

4. Flow curve tending to straight line, excellent regulation performance.

5. Long service life, standing the test of tens thousands opening/closing operations.

6. BUbbles-tight sealing with no leakage ubder the pressure test.

7. Wide selection of materials, applicable to various medium.

Material List:

No.	Part Name	Material
1	Body	Carbon Steel/Stainless Steel/Cast Iron/Ductile Iron/ Al-Bronze
2	Disc	Al-Bronze/CF8M/Ductile iron/WCB
3	Seat	EPDM/PEFE/Buna/NBR/Hypalon
4	Stem	Carbon Steel/Stainless Steel314/Stainless Steel316
5	Bushing	PTFE/Lubricating
6	O ring	EPDM/PEFE/Buna/NBR/Hypalon
7	Pin	SS316/SS416/SS304

Q: Ball valves are much more reliable. Also, if you have the gate valve for the main shutoff, is it against code to put a ball valve right after it, so you have a working shutoff when the gate valve fails?: 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: Cylinder head valves.Can't really differentiate the difference between burnt and just carbon build up on valves. Are they the same?If I the valves have no cracks or holes, can I clean the carbon off of them and reuse them.If they don't leak when I re-leak test them, are they then good to use?Had very little compression in one cylinder.What cleaner is safe to use on the valves?I know I should replace all, but any money I can save right now, helps a lot.Also I seen a method of re-lapping the valves by using a tool (stick with a suction cup on end that sticks to valve surface) that you spin while valve is seated. It refinishes the seat and recreates the seal/re-laps. Appears to work and seal just fine. Anything really wrong with this method?: If the valve is burnt there is nothing you can do with it but replace it. If they only need cleaning up you can lap them in with a lapping compound the danger with that is that you need to watch that you do not get close to the edge of the valve, that is when you will end up with a burnt valve. The valve should not be flush with the valve seat that is way to close and the heat of combustion will have a stronger effect on the material.

Q: My car had white smoke coming out from the exhaust.After talking to my mechanic, he said that the valve seat is faulty in which i suspected earlier. He also told that my car need to be overhauled. What would a faulty valve seat cause my engine?: It's the doctrine of alternative and end result. You made unhealthy offerings and are actually paying the penalties. If you had constant the EGR valve proper whilst the investigate engine gentle got here on, you do not need had the tickets. Cost of an EGR valve is beautiful small. But you selected now not to try this. When the plate ran out, you knew it was once out, and made the alternative to hold riding. When you obtained the primary price ticket you might have stopped then, and constant the vehicle and obtained present so there could be no MORE tickets. Again you made a alternative now not to try this, and hold riding, and get extra tickets. How lengthy could it have taken for you, or your husband, to make a sensible mobilephone name to the courts and give an explanation for your clinical situation? The courts could have gladly given you an extension to your look. But once more you made a alternative to disregard it till there was once a warrant on your arrest. Even now you've gotten made a alternative to invite a number of strangers at the Internet as an alternative than name the courtroom approach or authorized help to discover your choices. So, welcome to the exclusive global of penalties. Good Luck.

Q: i have seen the wrting M/T on some valve covers and was wondering what that meant: It stands for the manufacturer; Mickey Thompson

Q: i have been having these chest pains and i went to the doc. they did an ekg, blood test for enzymes and a echo. Well today i went back for the results of the echo and was told that i had a leaky valve but it was nothing to worry about and that there are just trace amounts of valve regurgitation. Im only 19 and i have no other history of heart problems or diseases should i be worried...they said i didn't need any anti biotics or anything and that it wouldn't kill me just to watch for it as i age into my latter years of life 50-70, but im still kinda worried..anyone else have this? im also pregnant and im concerned as to how this will affect my pregnancy, labor and delivery????: i have the same problem,they found it when i was 40 and that's been 10 yrs ago.in 10 yrs it has put me in the hospital 4 times.but feel good most of the time.good luck.

Q: does that mean it doesnt work?, how can i tell if the egr valve works still?: The EGR valve needs to be closed at idle. There should be suction in the hose, opening the valve only at cruise speed. On SOME EGR valves, you can stick your finger in the diaphragm and open it manually. The engine will sputter when you do this. I saw a tester do that at a smog check place. Otherwise, they have to use a little device that hooks up to the valve and sucks on it to test it.

Q: I had some great answers to my question yesterday... I have decided to have the valve job done... Since I have decide to go this route... I need some reassurance, the few people I have suggessed this option to have now told me that typically after a valve job other problems will start showing up. They have said that the car isn't worth putting money into and to get ride of it.: Getting a vlave job done isnt going to hurt your car at all, nor your motor. Make sure you have a reputable machine shop do this (most garages dont have the tools for it). If a 3 angle valve job is done correctly and new valve stem seals, retainers, and spring are all carefully installed to manufacturer spec then there should be no problem at all. Many shops will do a sloppy job grinding the valve face (which is a hard thing to get the knack for) and will install to valves without another thought. When new valves or old valves with resurfaced faces are installed the spring rate of the valve springs needs to be checked to ensure are srpings are the same strength. Also once installed, the height of each installed valve/spring needs to be checked to make sure its in the specified allowance. If valve seats and surfaces are all done correctly along with a profesional installation I wouldn't worry!

Q: Would a 96 saturn egr valve work on a 96 camaro: what approximately it? are you specific you'll be able to desire to repalce the valve itself. they could be run with the help of a sensor and vacuum traces or if sufficiently previous as yours could be basically vacuum traces. make sure your vacuum traces are good, with out holes....

Q: Specifically, what is the mechanism which leads to pressure drops in expansion valves?: I would wager that those losses, or pressure drops, are due to entrance and exit losses through the valve. Calculate the losses yourself. The mechanism is simply friction and geometry. Perhaps the losses are not what some agency says they are. Physical tests can be used should such phenomena govern costly criteria and baselines.

Q: I just want to ask do i turn clockwise or counterclockwise in the pipe main shutoff valve to turn on the water supply?: You turn the valve counterclockwise to open or turn on the water. You would turn it clockwise to shut the water off. Think of it as you would as if you were turning a screw. Right is tight. Be sure you open the valve all the way so the packing in the valve is tight, some valves leak a little, especially old ones, if the valve is only opened partially.It pays to work a valve occasionally to keep it supple, otherwise the packing or rubber washers dry out and start to leak. When you are operating a ball valve, one with a flat handle that only turns 1/4 turn or 90 degrees, when the handle is going in the direction of the pipe, the water is on. When the handle is going across the pipe, the water is off.

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