Such type of design is commonly used for Chlorine, Ammonia, DA, and Oxygen Cylinder Valves.With such type of seating arrangement the valve opens and closes at a low torque, therefore such valves can be provided with hand wheel. Non-metallic seating should be avoided where corrosive poisonous gases are used. Such types of valves are used with Carbon Dioxide and CNG cylinders.Diaphragm TypeDesignThe design is of packless nature achieved by metal diaphragm in which a seal is effected by the diaphragm being held in the place with body and gland side arrangement. When the Valve is turned from open to close position the stem deflects the diaphragm, which open or close the valve body seat. The curvature of the diaphragm increase proportionately, which regulates the flow of the gas. Such type of design is widely used in Marine DA Cylinder used for Marine Lightening purpose and also in some type of Refrigerant Valves and other special type of valves.
UNIVERSAL WELDING & ENGINEERING COMPANY (UNIVERSAL WELDING & ENGINEERING COMPANY)
AB- 4, Nandawan Co-op. Industrial Estate, L.B.S, Marg, Opp. ACC LTD, (W), Panchpakhadi, Thane, Maharashtra - 400604
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