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The valve type valve indicated above device, the realization of automatic termination of material from pressure vessel, boiler, or other system if the temperature or pressure exceed predetermined limi

When a control line becomes plugged due to contaminants in the hydraulic control fluid, or begins leaking due to corrosion, surface controlled subsurface safety valves become inoperable. As a result o

I have the above boiler and it's been OK for the last 7 years or so...but yesterday it developed a central heating fault it's losing pressure and the water is discharging out of the overflow,

Vacuum gate valves have a huge variety of uses in modern appliances. Indeed, vacuum in general is a force that is used for a number of reasons. Beyond the obvious vacuum cleaner, vacuum is also used a