Pressure Reducing Valves
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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.
- Q: i was filling the tire on my car and the valve stem completely came out when i finished, quickly deflating the tire. i could push it back in but then the process repeated itself when i tried refilling it again. is there part of the stem i'm not seeing. the stem that i saw was long and straight and threaded. advise, thoughts? thanks.
- are okorder /... to see a picture of one The valve is threaded into the stem The stem has threads inside and out ,internal threads are for the schrader valve and external threads are for the stem cap If the stem came out there is damage to the stem and it needs to be replaced ,but if the valve came out try using a schrader tool to screw it back in
- Q: the valve stem?
- In tubeless tyres the valve is fitted to the wheel rim itself, so you can remove the valve and replace it with a new one in order to re-use the wheel. Tyres or wheels that have an inner tube fitted don't have the valve on the wheel itself it is connected to the inner tube, and can be easily removed you just put a new inner tube in. If you just want to take the valve out and use that, you would be better off buying a new one because they are not expensive. If you have no choice then you will only be able to re-use a valve from a tubeless tyre as the other type has the vale permanently attached the inner tube. To remove the valve from a wheel rim you need to first take the tyre off (usually with the help of a machine, as they can be quite tough) and then push the valve out off the hole from the back as there is a lip and is difficult to do it from the other way then just refit the tyre.
- Q: What are a sing of a bad Idle control valve, will this cause bad mpg?
- Generally, a bad ICV will either be stuck open from carbon or dirt making the idle stay too high. Or dead which usually kills the engine when put in gear. Mileage would be affected, but if it idles good, it's probably ok.
- Q: It looks like our toilet water shut off valve is leaking. We are trying to turn off the water by turning the lever on the hot water heater, but this only turned off the hot water. So the cold water is still not turned off? We thought the one lever at the hot water heater would turn it all off, but it didn't work. Is there actually a separate water shut off valve for cold water in my house? Help!!
- There should be a shut-off valve at or near your water meter, or near where the water pipe enters your house.
- Q: Friends,is there anyone know about LinX(Linear Exchage)Valve,how they work.thanks in advance
- A valve is a device that regulates the flow of substances (either gases, fluidized solids, slurries, or liquids) by opening, closing, or partially obstructing various passageways. Valves are technically pipe fittings, but usually are discussed separately. Valves are used in a variety of applications including industrial, military, commercial, residential, transportation. Plumbing valves are the most obvious in everyday life, but many more are used. Many valves are controlled manually with a handle attached to the valve stem. If the handle is turned a quarter of a full turn (90°) between operating positions, the valve is called a quarter-turn valve. Butterfly valves, ball valves, and plug valves are often quarter-turn valves. Valves can also be controlled by devices called actuators attached to the stem. They can be electromechanical actuators such as an electric motor or solenoid, pneumatic actuators which are controlled by air pressure, or hydraulic actuators which are controlled by the pressure of a liquid such as oil or water. Actuators can be used for the purposes of automatic control such as in washing machine cycles, remote control such as the use of a centralized control room, or because manual control is too difficult; for example, the valve is huge. Pneumatic actuators and hydraulic actuators need pressurized air or liquid lines to supply the actuator: an inlet line and an outlet line. Pilot valves are valves which are used to control other valves. Pilot valves in the actuator lines control the supply of air or liquid going to the actuators. The fill valve in a commode water tank is a liquid level-actuated valve. When a high water level is reached, a mechanism shuts the valve which fills the tank. In some valve designs, the pressure of the flow fluid itself or pressure difference of the flow fluid between the ports automatically controls flow through the valve. In an open valve, fluid flows in a direction from higher pressure to lower pressure.
- Q: Was wondering if there is something I could purchase to put into a car so that it will become a 24 valve????
- You'll just have to buy a vehicle that has a 24 valve engine man.
- Q: I have rented a house and the irrigation timer only has wires of one zone.It goes to a single valve then out to a big round cover with 6 zone pipes coming out of it. What the heck kind of set up is this?does it do a mechanical rotation inside that cover? the zones only come on one at a time but every time I turn it on I get a different zone as they are all Zone 1 on the timer.
- The single valve is the master control valve. It shuts the system down at the end of the irrigation cycle. It's a safety element in case one of the zone valves doesn't close or close completely. The other valves are probably digitally addressable. Your timer opens the master control valve and then digitally selects each zone valve in turn and waters according to a programmed cycle. These systems are called irrigation sequencers. Some of them are wireless.
- Q: im 16 and im rly scared i have already been checked out by the hospital and they sed that i have a moderately leaky heart valve. They recommended me to see a childrens cardiologist since they dont specialize in children. i have to get another echo and some other tests done i think. im so nervous. whats going to happen to me??
- Dont worry, its only moderate so you should be fine. Yes you should go to a pediatric cardiologist to get checked over and get an echo, and ekg and probably a chest xray. They will tell you everything you need to know, its ok dont worry! Im 16 years old also, i have Aortic stenosis(narrowing valve) Aortic Regurgitation(leaky valve) bicuspid aortic valve(only 2 leafs instead of 3) and Enlarged aorta(aorta is getting bigger) and im ok! My stenosis is moderate, my leakiness is moderate, my enlarged aorta is mild. And i have not had surgery yet, im totally fine, i just cant play contact sports because of the enlarged aorta. You should be fine! Email me through my profile if you have any questions
- Q: pls. tell me the differnce between isolation and block valves and also where it to be used .
- *Terminology okorder /
- Q: Beneath my kitchen sink are two shut off valves for the water; one for hot, one for cold. The hot water valve has never successfully stopped all water flow, so we've always resorted to shutting off the main line. Well, now that's not working. We shut off the main water line to the house, all water everywhere is non-functioning except for the hot water pipe beneath my sink. It's now causing the faucet to constantly stream water, so it's something we have to resolve ASAP. I'd like to avoid calling a plumber, but my knowledge in such areas is very limited. Can anyone give me any decent suggestions? For the record, I did take apart the faucet fixture just in case, thoroughly cleaned it, and replaced all of the washers I had access to; but we only just bought the faucet in September, so I can't see a worn washer as being the problem. I also tried to tighten the nut behind the handle on the valve. It didn't effect the dripping.
- Leaky Water Valve
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Pressure Reducing Valves
- Ref Price:
-
- Loading Port:
- China Main Port
- Payment Terms:
- TT OR LC
- Min Order Qty:
- -
- Supply Capability:
- -
OKorder Service Pledge
OKorder Financial Service
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