High Performance Safty Valves

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Product Description:

Application:
A pressure relief valve (PRV) is a safety device that relieves overpressure in a vessel or system. When the pressure of vessel or system increased beyond the specified design pressure or maximum allowable working pressure, PRV will be opened automaticly to relief the overpressure for proteding the vessel or system. The PRV will be closed if the pressure reached specified design pressure so that to ensure the normal operation and protect the vessel or system.

Our Pressure Relief Valve has been designed and manuractured according to following Standard:

♦ ISO 4123-1 Safety Devices for Portection Against Excessve Pressure
♦ API STD 526 Flanged Steel Pressure Relief Valves
♦ API STD 527 Seat Tightness of Pressure Relief Valves

♦ ASME Boiler and Pressure Vessel Code Section VIII Division 1, Rules for Construction of Pressure Vessels

Peformance:
♦ Type: Conventional, Bellows

♦ Size:1" D 2"- 8" T 10"
♦ Class:150lb~2500lb
♦ Temperature:-268~+538°C

♦ Fluid: Gas, Steam, and Liquid
♦ Material: Carbon steel, Stainless steel, Alloy steel
♦ The allowable tolerance of the set pressure: ≤±3%
♦ Overpressure: ≤10%(gas)/≤20%(liquid)
♦ Blowdown: ≤10%(gas)/≤20%(liquid)

♦ Tightness: conforms to API STD 527

Features:

♦The solid nozzle is screwed into the body, which makes the maintenance easy.
♦ The shape of the disc holder has been designed to enhance the effect of the fluid thrust for an instant lift of the disc.
♦ Blowdown control is provided with adjustable nuzzle ring only.
♦ The adequate terials and clearance between disc holder and guide , spindle and adjusting screw assures disc to lift successfully.

♦ The surface of both the disc and the nozzle seat are deposited with Stellite. Excellent flatness and surface finish of the seating surfaces by precision machining and lapping assure pressure relief valve to have high degree of seat tightness and long using life.

♦ The bellows of balanced bellows pressure relief valves can not only avoid and effect of variable back pressure in the system , but also protect spring and other trim components from corrosive media.

♦ Materials are chosen carefully , and the manufacture of the spring and the bellows has strict technological process. Each of them is tested and checked strictly.

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Q:Are all the valve games tied together?
All Valve Games
Q:how pressure safety/relief valve works? explain with animation?
A pressure regulator is simply a device designed to maintain a certain pressure on a system or piece of equipment. A safety relief valve is a device designed to prevent the over pressure of a system or piece of equipment. The intent is to prevent a failure, rupture or explosion. The basis for the design of a pressure regulator is governed by good engineering practice while a safety relief valve in most cases is also governed by specific codes, regulations and laws. In the United States local boiler and pressure vessel regulations are the most common governing agency along with the ASME/ANSI Codes.
Q:Is it possible to extract a valve stem from an old tire or do you have to buy them individually to have just?
Just buy a new one for goodness sake!!!
Q:Standing water under sprinkler valves?
Sounds to me, like you have one of two things happening. Either you have a leak, which needs to be fixed. Or the valve box is in a low area where the water drains to... Turn on the water and watch the valves.. you might be able to see where the water is coming from. It may be as simple as tightening down the valve screws, or you may need to turn off the water at the main and repair or replace it. If the water is draining there or the leak isn't all that terrible the only way drain rock would help is if you were to dig underneath the valve a little, and to replace what you dig out with rock... Just make sure you can still access everything when you are finished. Good Luck!
Q:Symptoms of a bad idle control valve?
Could be.. Also could be dirty. Easy fix, remove the valve and spray carb cleaner in the hole.. Using a small brush, clean the bore that the valve rides up and down in. Also, inspect the valve while it is off the manifold. Harder fix: After cleaning the bore, replace valve with brand new one. Your car will have to relearn the idle after starting with the new valve or after you put the old one back in.. Start car, but do not put it in drive or give it any throttle until the computer has finished making adjustments. - Dave. (Long Island, NY)
Q:Painting valve cover?
Valve cover gasket. Make sure it comes with the spark plug tower seals or you need to buy them separately. It's best to bead blast the cover before painting it.
Q:fill valve is squirting water?
Find out the source of the squirting water, you may still salvage the valve by just deflecting the water with an ordinary material like a plastic bottle cutaway assuming your level control valve is in perfect condition. Or to be safe just buy a new valve.
Q:What prevents the valves in the heart from being pushed backwards?
the heart valves maintain the unidirectional flow of blood in the heart by opening and closing depending on the difference in pressure on each side. (wiki) So I would assume that the pressure of blood flow is what prevents the valve from pushing backwards. ALSO Atrioventricular valves These are small valves that prevent backflow from the ventricles into the atrium during systole. They are anchored to the wall of the ventricle by chordae tendineae, which prevent the valve from inverting. The chordae tendineae are attached to papillary muscles that cause tension to better hold the valve. Together, the papillary muscles and the chordae tendineae are known as the subvalvular apparatus. The function of the subvalvular apparatus is to keep the valves from prolapsing into the atria when they close. The subvalvular apparatus have no effect on the opening and closure of the valves, however. This is caused entirely by the pressure gradient across the valve.
Q:Water Heater Pressure Valve Leaking Occasionally?
Two possibilities: When cold water is heated by the water heater it expands. In most houses the tiny bit of extra volume caused by this expansion flows back out the main line toward the street and the water pressure in your home remains constant. Some homes get such high water pressure from the utility that a pressure regulator valve is added where the water main enters the house. But pressure regulators are, by nature, backflow preventers. So now the small increase in volume from heating water results in a large increase in pressure - which is bled off by the Watts valve on your water heater. The only problem is that Watts valves are designed to operate very infrequently and only in an overpressure emergency. Yours is operating multiple times per day and functioning as a pressure control rather than as an emergency release. This can lead to premature fialure and it cn be dangerous. If you have a pressure regulator or a backflow prevention valve on your water main, ten you must have a properly installed expansion tank. The other possibility is that the Watts valve is starting to fail and should be replaced - they normally last the life of the water heater - but you may have gotten a 'bad' one. So, check for a pressure regualtor or backflow preventer and if you have you get a pressure tank, otherwise try just installing a new Watts valve.
Q:will correcting of mild dextroscoliosis will affect existing mitral valve prolapse?

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