Pressure Reducing 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:How does an on-off actuator and ball valve connect?
it is going to be to long of an answere to bypass by, yet you have a often closed valve and a often open valve. So while air is provided, one opens and the different closes. you may artwork something out with that based how your set up is going to be. it rather is the solenoids i'm talking approximately.
Q:Multi Valve advantages?
Think of an engine as an air pump - obviously, we want the least amount of restriction for the incoming air and also the least amount for exhausting the compressed air. The ideal situation would be to remove the head during the intake stroke and put it back on during the compression stroke, but, obviously, this isn't possible. On a naturally aspirated engine, the intake is the most critical because the air is moved only by a relatively small difference in pressures. The exhaust stroke, on the other hand, is aided greatly by the super heated temperature and rapid expansion of the gasses. Two intake and one exhaust valve seems to be the most practical and efficient solution - adding more vales means smaller valves and an increase in the overall complexity. I seriously doubt that Maserati ever abandoned ANY automotive idea due to cost restraints. It's far more likely that adding more valves than three or four simply resulted in diminishing returns. Sometimes the allure of a new buzz phrase is nothing more than a marketing ploy - a 16 valve, DOHC, four cylinder engine, for example, is a pretty impressive resume for an engine, regardless of whether it actually is the optimum performance set up or not.
Q:how can multi valve prolapse affect me? (13 year old female)?
Do you mean Mitral valve prolapse? The mitral valve helps blood on the left side of the heart flow in one direction. It closes to keep blood from moving backwards when the heart beats (contracts). Mitral valve prolapse is the term used when the valve does not close properly. It can be caused by many different things. Most people have no symptoms, but some people have chest pain, a rapid pulse, awareness of heartbeats, migraine headaches, fatigue, and dizziness. In a small number of cases, the prolapse can cause blood to leak backwards. This is called mitral regurgitation. Mitral valves that are structurally abnormal can raise the risk for bacterial infection. Some forms of mitral valve prolapse seem to be passed down through families (inherited). Mitral valve prolapse has been associated with other genetic disorders.
Q:My grandfather? Valve replacement??
Get okorder.com
Q:HOW TO ADJUST THE VALVES ON ON A 4-STROKES MOPED?
MY MECHANIC TOLD ME: AT 9000 MILES, SCOOTER IS DUE FOR VALVE ADJUSTMENT. EVERYTHING ELSE SHOULD BE OK. 1] WAIT UNTIL MOTOR COOLS OFF 2] REMOVE PLASTIC VALVE COVER 3] LOOSEN RIGHT FENDER TO GET EASY ACCESS TO VALVES 4] USE 8 MM SOCKET TO TAKE OFF THE FOUR VALVE COVER SCREWS 5] USE 10 MM SOCKET TO TAKE OFF THE LAST TWO NUTS 6] REMOVE ALUMINUM VALVE COVER 7] PISTON MUST BE FIRST COME ALL THE WAY UP BEFORE ADJUSTING VALVES 8] CHAIN AND DISK HAS 3 HOLES, SET HOLE ONE UP, HOLE TWO DOWN, AND HOLE THREE TO THE LEFT [ IN THE MIDDLE BETWEEN THE TWO VALVES. 9] MUST HAVE A GAGE FEELER SIZE 3/1000, AND 4/1000 $7 SET AT ADVANCE AUTO 10] USE 9 MM SOCKET TO LOOSEN THE TOP INTAKE VALVE NUT USE GAGE SIZE 3/1000 ON TOP OF VALVE. ADJUST VALVE SCREW, NOT TOO TIGHT, AND NOT TOO LOOSE HOLD THE TOP SCREW WITH A PLIER WHILE TIGHTENING THE TOP NUT WITH 9 MM OPEN WRENCH. MAKE SURE THE NUT IS GOOD AND TIGHT. MINE WAS MOVED TO SIZE 7/1000 MM, THEREFORE, IT WAS HARD TO START. 11] USE 9 MM SOCKET TO LOOSEN THE BOTTOM EXHAUST VALVE NUT USE GAGE SIZE 4/1000 ON TOP OF VALVE. ADJUST VALVE SCREW, NOT TOO TIGHT, AND NOT TOO LOOSE HOLD THE TOP SCREW WITH A PLIER WHILE TIGHTENING THE TOP NUT WITH 9 MM OPEN WRENCH. MAKE SURE THE NUT IS GOOD AND TIGHT. MINE WAS MOVED TO SIZE 2/1000, IT WAS HARD TO START. 12] HOOK THE GROUND WIRE, AN CHECK IF IT IS EASY TO START 13] ONCE IT HAS GOOD START, PUT THINGS BACK IN REVERSE AS THEY WERE. 14] FIRST PUT COVER AND ALL SCREWS HAND TIGHT ONLY, THEN TIGHT THEM GOOD. I STARED TIGHTENING THEM ONE AT A TIME, THEN THE LAST ONE WOULD NOT FIT I HAD TO LOOSEN ALL OF THEM AND GET THEM ALL STARTED AND HAND TIGHT FIRST. 15] ADVANCE AUTO MAY LET YOU USE SOME LOANER TOOLS 16] PUT EVERYTHING BACK TOGETHER AND YOU READY TO GO FOR 5000 MILES. GOOD LUCK, WERE YOUR HELMET, AND DRIVE CAREFUL. TRY NOT TO DRIVE IN BAD WEATHER WEATHER LINK: www.spc.noaa.gov/
Q:Low water pressure from Orbit valve.?
Its possible the valve stem is corroded with stuff not letting it actuate properly open. Turn water off and unscrew the valve then actuate it electrically while watching for a full stroke. Make sure flow control is all the way open when inspecting valves stroke. Remember where you had it set when done or readjust. Also check the solenoid for corrosion and clean linkages. I would clean and coat with petroleum jelly. My guess is valve seat is gummed up so lube the stem and work it manually till it slides open and closed easy then test with the solenoid. Good luck!
Q:How much does it generally cost to replace valve seals?
budget $300-400 probably to fix the stem seals. if you have ANY thoughts of replacing the heads with a performance set now is the time...
Q:Where can i find angle valve for sink?
If you're looking for a valve that attaches to a 1/2 iron pipe coming out of the wall, and then will feed to 1/2 copper tubing, then you're looking for- an angle stop, 1/2 female iron pipe to 1/2 compression. Just about any good hardware store will have it in stock or be able to order it, just be sure that they know what you need. I've often found that using visual aids,like a piece of pipe in one hand, and a piece of tubing in the other, with an empty space, waiting for a valve, between them, can be an invaluable aid to communication. Don't even try to cut and adapt a braided hose. The stainless braid contains a (relatively thin) rubber hose. Without the braid to reinforce it, it will burst. If you need to adapt plumbing, there is always a way to get water from point A to point B. The challenge is finding the most elegant route.
Q:Sprinkler valve leak?
You are turning on electric valves, manually, with the bleeder valve (little black twisty thing). It is normal for this to happen. This valve can turn on and off a zone, but it also releases air from within the lines causing water to spit out with it. After the air is out, you can twist it down enough to stop the leak and still have that zone remain on.
Q:Which valve type is commonly used at ship's sea chest suction (inlet) side?
Globe valve is used commonly

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