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: I am being sent for a level 2 Ultrasound Thursday because my previous US showed one of the babies valves was enlarged. She said all 4 chambers were there but she was very vague on what this means. Care to shed some light?
- ?UPDATE? We went to the US today and the heart was 100% HEALTHY!! There was nothing wrong with any anatomy of baby girl. The doctors there said they are completely confused as to why my Doctor would tell me the baby might need heart surgery when she wasn't even 100% on the issue and even if it was due to positioning like she 'claimed' at first, then a Level 2 US wouldn't be necessary. I'm just so grateful and thank God that my baby is ????!
- Q: What is the function of valves between atrium and ventricle in the heart?thanks
- the atrioventricular valves (AV valves) separates the atria from the ventricles. the AV valves perform a very important function in the heart by maintaining the blood flow in one direction. they are subjected to tremendous strain during every heart beat, and are uniquely designed to withstand this strain through a person’s lifetime. the right AV valves is called the tricuspid valve. the left AV valve is called the mitral valve. the opening and closing of the AV valves is dependent on pressure differences between the atria and ventricles. when the ventricles relax, atrial pressure exceeds ventricular pressure, the AV valves are pushed open and blood flows into the ventricles. however, when the ventricles contract, ventricular pressure exceeds atrial pressure causing the AV valves to snap shut. :)
- Q: my valves got dirty long story how do you clean them
- Remove the valves, wash them and the horn in warm (NOT hot) water with liquid dish soap. Dry with a clean towel, then oil and reassemble.
- Q: its a vauxhall movara van and i need help im trying to found out wether the valves are broken all the springs are upright and all level , so does this mean there ok ? or not ... thanks
- You need to have someone crank the engine and check to see if all of the rocker arms are moving.
- Q: Compare and contrast stenosis and regurgitation (insufficiency) in terms of the functional abnormality associated with the valve leaflets and their effects on hemodynamic parameters such as stroke volume.
- stenosis means thats it difficult to open the valve to allow a full ejection of blood. regurgitation is caused by an insufficient valve, in which the valve does not close all the way, and thus allows blood to flow backwards. For instance, the two AV valves (mitral on the left, tricuspid on the right), are prevented from prolapsing by chordae tendonae, which are connective tissue fibers attached to pieces of cardiac muscle (papillary muscles) on one end, and the edge of the valve on the other. If these chordae tendonae break, this may cause blood to flow back into the respective atria during ventricular systole. Valvular insufficiency and prolapse will cause diminished stroke volume. Valvular stenosis, on the other hand, is typically caused by a buildup of material on a valve which inhibits its movement. This buildup could be many different things, to name a few: valve calcification due to hypercalcemia, bacterial adhesion and growth due to sepsis, plaque (cholesterol bound with free radicals) buildup on the valve, a fibroma, etc... If the valve's opening is inhibited, and it does not open all the way, there will be a diminished blood flow into whatever chamber is next in the sequence. If an AV valve is stenotic, the ventricles may not fill properly, and preload will be low, which will lower ejection volume. If the semilunar valves are stenotic, then the ventricles will likely hypertrophy because they will need to work harder to force as much blood out, because blood entering the ventricle must equal blood leaving the ventricle with each heartbeat (starlings law of the heart).
- Q: what are the factors should be know to select a control valve for specified application
- nan
- Q: I'm looking for a valve that can be electronically controlled to open and close with a diameter of 1.5'(inches) to 2'(inches) and this valve must be able to withstand 20psi. Any websites or listings of stores I can go to would much appreciated. Thank you
- Any industrial plumbing supplier will either have these in stock or be able to obtain them for you. There is not much point in giving you addresses without knowing what country that you are in.
- Q: Does anyone know where i can get a chromed valve cover for a 99 eclipse or is there a way that i can do it myself? id like to get one that has the etched 2.0 and DOHC words on it
- You can have it dipped in chrome and detailed for the lettering. It pricey but its the best way or you could try finding chrome spray paint that is good up to 500 degrees and do it yourself but it may not look as good.
- Q: Where do I get a electric valve with a 120 VAC coil
- ASCO okorder is another vendor, though Grainger is good. If your budget is tight you could remove one from a dead dishwasher or washing machine.
- Q: i heard i should get one rather than a Dump valve, well?, should i?
- Depends on the fuel injection system you have and whether or not you want it to make noise or not then a dump valve it is.Now,we need to know what kind of fuel injection system you have.If the car has a mass airflow sensor then a dump valve will not work.You see,all the air that enters the motor must be metered by the MAF sensor.If you have a dump valve,when you let of the gas,the pressurized air is vented to atmosphere.The engine control module is expecting X amount of air to enter the engine.It just got released to the outside.see the problem.
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High Performance Pressure Reducing Valve
- 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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