Relief valves of different types that our factory makes are used in the boiler of hydropower station , high-pressure container such equipment as the device ,etc. mainly, reduce and reduce pressure , prevent the medium pressure from exceeding the allowing value, so as to ensure the aircrew and equipment safe operation. The products include five series below:
1. Relief valve of dish-shaped spring: Adopting the disc form spring group to offer the valve to seal the necessary load, its advantage is that rigidity of a spring can carry on proper adjustment according to the need , the valve is relatively low in height, and can overcome the shortcoming that the coil spring may rupture in the high load , high-frequency vibration ; Valve is it compress air jar as auxiliary load , can improve person who seal of the valve , especially improve the sealed state of the valve while closing to opening the pressure of jumping to have, and can accurate to is it open pressure of jumping and answer a pressure to control;
　2. The whole quantity type relief valve : This serial valves of departments adopt the new-type relief valve made of foreign advanced technology, it is great to discharge coefficient, the sealing is good, adjust it conveniently, it is can be up to 4% to open and close the difference of pressing , have international most advanced levels , accord with ASME standard regulation. The valve is a a structure of hot valve of adopting the elastic tongue form, utilize its to improve the sealing property smallly and out of shape; Valve is it is it have , lay ring of regulating and is it keep structure of regulating to carry to have to design, can is it open pressure of jumping , is it pigeonhole and open and close the difference of pigeonholing to carry to regulate accurate;
3. Main relief valve : Use with the relief valve of the impulse together;
4. Relief valve of the lever : There are pole relief valves of horizontal bar and one pair of levers and two kinds of relief valve;
5. Impulse safety device : Keep , high pressure , ultra high-pressure boiler steam dome , overheated device in used in separatelying,, hot device collect the case. Main relief valve and impulse valve are used together, the impulse valve (selects levers or the spring type impulse relief valve for use ) is as the guide valve controlling main relief valve movements, there are electro-magnets used for carrying out and opening , closing , form machinery with protecting and not interfering each other electrically and doubly . A whole set of device is made up by main relief valve , impulse valve , stop valve , choke valve and electro-magnet device ,etc..
 

Relief valve

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