High Performance WCB Safety Valve For Steam Service

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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

♦ 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


♦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:94 DODGE caravan EGR valve?
Yes there is. Disconnect the rubber hose on top of the EGR valve. Connect a hand-held vacuum pump to this fitting. Start the engine. Slowly apply vacuum to the fitting on the valve. While applying vacuum with the engine running at idle speed, the idle speed should drop or the engine may even stall. In that case the valve is working. If the engine speed doesn't change, the EGR valve may be defective, or EGR tube may be plugged with carbon, or the passages in the intake and exhaust manifolds may be plugged with carbon. In this case remove the EGR valve from the engine. Again apply vacuum to the EGR valve and observe the stem on the EGR valve. If the stem is moving, it can be assumed that the EGR valve is ok. In that case clean the EGR tube and the intake and exhaust manifolds passages Hope this will help you.
Q:What kind of valve packing material should I use for my shutoff valves?
Well if you talking about the water shutoff valves under sinks then you need to first shut off the water comming into the house at the main shutoff valve near the street , Or at a line comming into the house that connects up to the valve you are trying to fix or you may take a slight bath while trying to fix the valve that wont shutoff. Then Go to the shutoff valve you want to repair in that line where you shut the water off at and unsrew the handle at the base of the handle shaft using two wrenchs to hold both the nut on the shaft while using the other to hold the shutoff valve .this will prevent twisting the valve right off the connecting lines. Most of the time you will find it has a rubber gromet attached by a screw to the handle shaft.this is what you need to replace with a new rubber gromet which you can get in an assortment box at wal mart or homedepot or lowes for a low price. If you are using teflon thread or jointcompound you are repairing a Pipe joint leak where water is leaking externally of the pipe,not a shutoff valve leak .
Q:what is the definition of differential pressure for valves?
Differential Pressure Definition
Q:how do you check a solonoid on a sprinkler valve?
dio, yes, if your sprinkler control valve is not opening a zone valve in the automatic mode, then manually turn the solenoid on the zone valve counterclockwise, it sprinklers come on , then you have confirmed a bad solenoid. these can be purchased seperately or another oprtion is a complete zone valve dio, well, if water is flowing thru then the solenoid is not sealing on the zone valve body itslef. unless there is debris between the solenoid washer and zone valve body, then sounds like a bad solenoid...
Q:Pressure/Vacuum Relief Valve??
The pressure relief valve is to protect a tank or piping from rupturing from excess pressure. A vacuum relief valve would prevent tanks and piping from collapsing from too little internal pressure.
Q:about a blow off valve?
a blow off valve only sounds good and will cause you to run rich and blow black smoke when it releases boost other than that there is no actual gain in hp just a cool sound
Q:What is the torque specs for a valve cover?
This Site Might Help You. RE: What is the torque specs for a valve cover? I replaced the valve cover seal and I wanted to know the torque specs for the valve cover bolts and the sequence it should go
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:1995 Intrepid keeps burning EGR Valves?
are you sure its the egr valves going bad or not the egr solenoids causing you to get the code,that will make it appear that an egr has gone bad when it really hasn't,good luck.
Q:Prognosis of my bicuspid aortic valve?
Most patients with bicuspid aortic valve whose valve becomes dysfunctional will need careful follow-up and potentially valve replacement at some point in life. Regular EchoCG and MRI may be performed. BP reading (1) 160/85 mmHg. Stage 2 hypertension (Isolated systolic hypertension) (moderate). If the systolic blood pressure is elevated (140) with a normal (90) diastolic blood pressure (DBP), it is called isolated systolic hypertension. Pulse pressure is 160--85 = 75 mmHg. Optimum pulse pressure is 40 mmHg. A higher pulse pressure may mean your heart's valves are leaky (valve regurgitation). BP reading (2) 138/75 mmHg. (Prehypertension) Pulse pressure is 138--75 = 63 mmHg. Pulse pressure 40 mmHg is abnormal. BP reading (3) 157/85 (Stage 1 hypertension) (mild) Pulse pressure is 157--85 = 72 mmHg. Cardiovascular mortality risk doubles for every 20 mmHg of systolic BP or 10 mmHg of diastolic BP over and above the normal blood pressure of 120/80 mmHg.

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