July 2000

Environment

Choosing a bellows seal valve for zero leakage

Consider these application guidelines

Chidrawar, S., Bell-O-Seal Valves P. Ltd.

Today's chemical process industry is gearing itself toward safer technology for a better environment. With increasing safety awareness in the industry and society, it has become every process engineer's responsibility to design a plant that provides minimum damage to the environment. The emphasis is often to minimize waste of materials and energy due to plant leaks. Apart from pollution due to leakage of toxic materials, every drop leaked adds to the production cost. These leaks come from various sources—typically pumps, valves and flange joints. This can be reduced considerably, if not eliminated totally, by various steps. Valve leakage can be reduced by: 1) proper choice of valves w

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