Concentric Butterfly Valve ISO5752

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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: I dont want to buy an expensive snorkel, because I only want the valve. Its for a project for a club where I go to college.: Not okorder /

Q: Can you please explain to me what an atrial valve is and what it does??: Only Veins have Valves that's in order to keep blood pumping inside, with the help of Skeletal muscles. About Atrial Valves, there's a valve in the Pulmonary artrey only.

Q: Hey,I have a 1/2 diameter pipe and I want to place a valve on it. I need a valve that can be electronically controlled so the water flow can be started and stopped on demand. I plan to achieve this by connecting the valve to a 'relay' that will be connected to an ardunio or PIC that will programmed to determine when the water is to flow or stop. That make sense? So my question does anyone know a suitable type of valve? I've no experience with valves and there are so many types so I don't know where to start!I would be grateful for any suggestions :)Thanks!: Your application is very do-able. ASCO makes a valve that would work for your application. A few used ones can be found on Ebay. A few thoughts: 1) The normal fitting that you would need for the mechanical connection is 1/2 NPT (National Pipe Thread). That is a very common thread in the US. If you have a PVC pipe, you would have to get a fitting to convert 1/2NPT fitting to smooth PVC. If you have a steel pipe, then it has to be threaded for 1/2 NPT. If it is copper, you may have to get a smooth ASCO valve and solder it together. Use teflon tape or pipe dope to make sure that it doesn't leak. 2) Be very careful of your voltage and current. Your relay coil should be a voltage and current draw that will not be too much for the ardunio or PIC output. Also, the relay contact should be able to provide enough current and voltage to run the ASCO valve. BE CAREFUL. ASCO valves have a lot of inrush current, which means that it draws a lot more power to activate that it would be to hold it. Your relay should be sized for the worst case. For example, if the ASCO valve is rated for 120 volts ac (VAC) and is rated at 240VA inrush and 12VA holding, that means that it requires 2 amps to pull it in (240/120) and .1 amps to hold it (12/120). The contacts of your relay should then be rated for at least 120VAC and 2 amps.

Q: So i finaly got my check valve and my airstone. The airstone is actually a flat round airstone and is 5 inches in diameter to be in my 10gallon. Is it to big? though i have a tetra whisper air pump for 10-30g.And how do i place the check valve? Do i put it closer to the tank or closer to the pump? (just to make sure since i heard so many different ways people put it). Or does it even matter?And lastly, do i put the OUT side of the check valve facing towards the tank or the pump?Thanks! after this im ready to install it!: The airstone is not too big, unless it causes the water to bubble right out of the tank. Then you will need a valve to divert the excess air to an unused air line. If the airline is already cut, just put the check valve wherever the airline ends. If it's not cut you can put it anywhere. The arrow on the check valve should point toward the aquarium. If it says IN and OUT, then the OUT is on the aquarium side. If you want to test it to be sure, blow in one end of the valve. You can't blow air into the side that connects to the aquarium. Be sure there is a drip loop in the air pump electrical cord. If water were to somehow get in the air pump or drip on it, water might follow down the outside of the electrical cord and go into the the wall outlet. To make sure that doesn't happen be sure the cord is looped down lower than the outlet and then loops back up before it's plugged in. Get a second airstone any time in the next few weeks. About once a month, trade airstones, putting the recently used one into a jar with white vinegar. A week or so of soaking will unclog the airstone so that it can be used again several times before needing to be discarded. If you do have excess air, I find that running a piece of airline tubing to a spot away from sight and putting a short piece of pipe cleaner in the far end will muffle the hissing sound of the excess air.

Q: so, im a day away from getting a 2002 748 and im super excited, iv always wanted a ducati, and i cant wait to have one of my own. i understand that ducks have a reputation of breaking and im prepared for it. I also understand the valves need to be adjusted every 50-100 feet :P all kidding aside i know every 6k miles they need to be adjusted. i dont know however how much it costs to have the valves adjusted. im sure it varys from shop to shop but a ball park quote would be really helpful just so its not a kick in the gut when i take it in for the first time. thanks: Well first, you need to get them inspected, and they'll only adjust the valves if it's needed, even at 6k mile intervals, if your valves are still in spec or very close without lobe drag, they probably won't be changed, so check your bill and ask your tech directly if they were changed, some less reputable dealers may try to pull a fast one on you. If you actually needed ALL 16 shims changed, you're easily talking $1000 in labor, esp. on the 748/916 style heads, which have access ports on the heads instead of being able to remove the whole top of the heads like the newer DESMOQUATTRO heads, and are a PITA to work on because of it. The bad thing is that until recently (and they still need improvement) Ducati's quality control is lower than other manufacturers, meaning very inconsistent performance reliability, just from variances in manufacturing. If you get a GOOD tech to do the bike right in the first place though, not just valves but all-important TPS resetting, cam timing/belt tension, and balanced CO's in your exhaust, you will have a lot less headaches with your Duc.

Q: What are the function of reed valves on a motorcycle?: GuardrailJim and Badobses---, you both got it almost right. You other guys, take a lesson. First, Jim Bad should have said fuel is pulled into the crankcase, through the reed valves. The crankcase is a small sealed off area on a two stroke, just larger than the flywheels. Old days, the piston skirt was used for a valve, opened when the piston was on the way up, closed on the way down. Both systems use the piston skirt to open and close the exhaust port, which opens when the piston is on the way down on the power stroke, normally about half way, give or take a bit. Intake, into the combustion chamber starts when the transfer ports open, which is a bit after the exhaust port opens, and closes just a bit after the exhaust closes. With the reed valve, mixture is pulled into the crankcase at any time the case pressure goes below atmospheric. Also stops, by the reed valve, as soon as pressure goes over atmospheric. This lets the engine induce a fair amount more mixture than was possible with a piston port, and no blow back of mixture through the carb. This is a simplification of a very complicated piece of air flow. One will know chap I know, who also built some of the best, if not the best 2 stroke exhaust went back to college, got a Doctrate on accoustics before starting design of his expansion chamber systems, and THEY WORKED! Sorry, I did not mention disk valve engines the first time, in effect kin to the piston port, except they are timed for opening and closing to be at proper time to get maximum flow into the crankcase. Less blow back than with a piston port. Between piston port and reed in power, all else equal. Reed valves are all-round best. Cheers, Tomcotexas.

Q: Does the new valve get glued or anything or do I just put it on tightly? I cannot tell if the existing valve is glued on or not.: Is the new valve or the old valve the compression type? If the old valve is then as you take it off you will discover if it is glued (I doubt a compression valve is also glued). Replace the old valve with the same type as the old one. That is always a good rule of thumb to follow. Put it on tightly but DO NOT over-tighten it. 1/4 turn past tight it usually tight enough. I am not a big fan of compression fittings in either copper or cpvc. You may wish to put a glued valve on, if you already have the cleaner, the primer, and the glue, other wise the expense of the materials does not warrant their purchase for the changing of one valve.

Q: I have to get a new vacuum switching valve for my 1987 toyota pickup. I was just wondering what it does, and if a broken one would cause my truck to not idle. It still runs fine when i drive it, but when i push the clutch in the RPM's get really low until it dies.: Vacuum Switching Valve

Q: So outside we have a gas grill. There is a valve to turn when you want to use it. U can only hear the gas going when u turn the burner knobs but say u left the valve open and no knobs turned at all for 5 hours is gas escaping or does it only escape when the grills knobs are turned? Thanks: To answer your question directly, as long as the valve is open gas will continue to flow until its turned to the off position.

Q: I've been diagnosed with mitral valve prolapse, my doctor just told me that i need to setup an appointment with the hospital to look at treatments for heart mitral valve prolapse-to possibly have a heart valve replaced. I am wondering if i should setup an appointment with mayo clinice in minnesota to get another opinion on that? I'm wondering if surgery is an only option available to me, i have been taking beta blockers that have been no help for the past 3-4 months. Thanks.: Beta blockers. These drugs help prevent irregular heartbeats. They work by blocking the effects of the hormone epinephrine, also known as adrenaline. As a result, the heart beats more slowly and with less force, thereby reducing blood pressure. Beta blockers also help blood vessels relax and open up to improve blood flow. Valve replacement. Valve replacement is done when valve repair isn't possible. In valve replacement surgery, the damaged mitral valve is replaced by an artificial (prosthetic) valve. The two types of artificial valves are mechanical and tissue. Mechanical valves, which are made of metal, may last a long time. However, if you have a mechanical valve, you must use an anticoagulant medication, such as warfarin (Coumadin), for the rest of your life to prevent blood clots from forming on the valve. If a blood clot forms on the valve and breaks free, it could travel to your brain and cause a stroke. Tissue valves are made from biologic tissue such as a pig's heart valve. These kinds of valves are called bioprostheses. They may wear out over time and need replacement. However, an advantage of the tissue valve is that you don't have to use long-term anticoagulant medication. Please see the web pages for more details on Mitral valve Prolase and Heart valve surgery.

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