ANSI CARBON STEEL BELLOW SEALED GLOBE VALVE

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Description

A bellow seal valve has a compact structure and is one kind of control valve to balance the pressure. Bellows are used as the valve stem sealing components of the bellow seal valves. … The bottom of bellows is welded to the valve stem of thebellow seal globe valve to avoid process fluids eroding the valve stem. The “positive valve seal”, that is a seal with actual physical contact with both valvestem and valve guide, is the approach necessary to truly SEAL the combustion chamber in the valve stem area. Leakage at various points in pipelines found in chemical plants creates emissions. All such leakage points can be detected using various methods and instruments and should be noted by the plant engineer. Critical leakage points include flanged gasket joints and the Valve / pump gland packing, etc. Today the chemical process industry is gearing itself towards safer technology for better environmental protection and it has become every process engineer’s responsibility to design plants that limit damage to the environment through the prevention of leakage of any toxic chemicals.

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