High Performance Pressure Reducing Valve
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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:Are they referring to the nozzle orifice or are they talking about the diameter of the nozzle? Does it mean the inner diameter of the valve like in a globe valve?
- Excellent reply by OFT.
- Q:My cardiologist says I have Mitral Valve Relapse. She says MVR is when there is a backflow of bood entering the heart. When I checked online for MVR, I couldn't find anything except MVP (Mitral Valve Prolapse). What is MVR and how is it different than MVP?
- I believe you DO mean MVP. You probably misunderstood your cardiologist. Prolapse is a deformation of the valve in which valve does not completely close, causing a back flow of blood into the atrium. In most cases this is relatively benign and in fact, occurs in about 10% of people. In severe cases, you may need a value replacement, but usually this occurs at birth or after a disease damages the heart.
- Q:i have got a problem with the valve but i have some guy gonna try and clean it next week. i have heard of blanking plates. has anyone used one of these? do they make any difference in the way the car goes ?
- Think okorder . Go on line an read: Function EGR Valve before you ruin the engine with a block-off plate.
- Q:2003 Ford Focus SE2.0L SPI EngineAutomatic Transmission 145KPerfectly maintained since new!One of the pistons had snapped, yes the actual piston, it didn't mess up the walls, but I am hearing a LOT about these dropping valve seatsI intended to do an entire rebuild with a kit, but did it break BECAUSE of a droppedvalve seat?I don't know because I don't know what that isHelp is appreciated
- I don't know if cars really have replaceable valve seats or seats that can come loose (maybe they do with aluminum heads). But if a valve contacts a piston for whatever reason the valve and piston can sort of disappear (ie, break up). How many miles are on the car, and if it has a timing belt, did you ever replace the timing belt at the recommended miles (not normally an issue for engines with timing chain). Many engines are interference engines which means that if the timing belt breaks and pistons keep moving, a piston can hit a valve. Although, we had a regular V8 engine do that (valve and piston disappear) with a car from the late 1960's (not sure of actual cause, we replaced it with a used engine).
- Q:when heater heats water there is a small leak thru the releif valve. need answrers to possible reasons for malfuntion. leak is not continous.
- OKAY...the 30 psi is bogus....I've never heard of that! The pressure coming into your house and the water heater is typically 70psi to 100psi....the relief valve is set to pop off at 175 psi....if the pressure in your water heater reaches 175 then the valve will pop....when this happens you need a new relief valve....you may want to figure out why this happened also......your heater may be set too high... try turning it down a little......but first check the incoming water pressure to your home....do this by buying a water pressure gage and screwing it on to an outside hose bibb and turning the hose bibb on......if the pressure is over 80 psi (which is what most plumbing code calls for) then you probably want to install a pressure regulator in the yard to lower the pressure......Example.....if you have 120psi coming into the water heater, and when water heats it expands and builds pressure then you could reach 175 psi and your relief valve will pop off.......good luck!!
- Q:We have a main gas valve outside and there's a gas valve by out air condition and we want to know which way if off and on .. Does anybody know !!!
- i just went outside checked mine it is in the straight up position. the handle that you turn off or on is straight up with the hole for the padlock facing straight up also. hope this helps happy holidays to you yours.
- Q:What are the requirements for valve automation?
- Valves are commonly available for both liquid and gas. You would begin by determining operating pressure, volume, nature of fluid, and temperature of fluid. The electrical requirements are as simple as supplying power to a solenoid. Mechanically, automatic valves are sophisticated. Begin by researching the water supply valves for a domestic washing machine.
- Q:Hi....my boyfriend is currently waiting to have heart valve replacement surgery and im a little worried about the whole thing...he doesnt like talking about it but if someone knows the answer to my questions I'd be so greatful!!First of all a little detail....he is 19, as far as i know he was born with this problem with his valve but it has got worse over time. he was also born with a hole in his heart but had an operation as a baby to fix this. he gets short of breath and often has pains in his chest. he says hes going to have a pigs heart valve to replace his, by open heart surgery (in a few months time). my main worry is whether the operations are always successful? and will this condition/operation affect his life expectancy??please if there are any experts in the field help put my mind to rest....!thanksshelly x
- Open heart surgery is always a risk, as is any major surgery. The main risks are from infection and blood clots. The risks taper off very quickly within a few days after the surgery. Heart valve replacements are a common operation, with a high success rate. Life expectancy is generally better with a valve replacement; but not all valve problems reduce life expectancy to begin with. Sometimes the trade-offs are more of an issue with quality of life, with higher quality achieved with a functioning heart valve, so some people may be taking a medical risk to obtain higher quality of life. No one can tell you for certain what the outcome of this operation will be. The odds are very high that everything will go perfectly and he will fell better than ever before. There is a very small chance that he will end up worse To put the risks in perspective, a person i know had minor surgery to her knee - a simple 1 hour operation done at an outpatient clinic. Ten days later, a clot broke loose and she died in her sleep. I have had the same operation twice and didn't even miss more than a few hours of work. Another person i know had severe heart problems and docs said it was terminal, but an operation could prolong his life maybe 5-7 years. He had the operation and its now been almost 20 years and his cardiologist says his heart is healthy and there's no reason why he might not live another 20 years or more.
- Q:How do you repack an osy valve? Where do you get the packing from? Do you have to shut down the water to do it?
- where is i get the packing gland material
- Q:Electric Hot Water Tank Pressure Release Valve Leaking, Why?
- The TP valve is the most crucial piece to your water heater and your safety, If all you do is open and close it in order to stop it from leaking, then you are taking a HUGE chance for it to fail. If that where to happen, you better pray you are not home because the TP valve is the ONLY devise a water heater has to prevent it from exploding. I am not trying to scare you, I just want to make you and anyone else aware of the extreme dangers, besides the temperature and pressure relief valve is very inexpensive and very easy to change.
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High Performance Pressure Reducing Valve
- Ref Price:
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- Loading Port:
- China Main Port
- Payment Terms:
- TT OR LC
- Min Order Qty:
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- Supply Capability:
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