Download - Valves used in industry
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VALVES TYPE & FUNCTION
VALVES
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Valves On-Off Service Throttling (Regulating) Service Prevention of back flow Pressure control (Control Valve)
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ON – OFF SERVICE
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Gate valve.
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Gate Valve :-
ON – Off Valve ,Used in:1-Water.2- Oil.3- Gas4- SteamAnd Other Fluid Services.
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Wedge gate valve and parallel slide valve
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Gate valve 2.
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Plug valve (on-off) or Cock low-pressure
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Plug valve (on-off) or Cock
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Plug valve Applications Gas and liquid fuel Water. Extreme temperature flow Boiler feed water. Low Pressure Steam . Corrosive Liquids and Gases
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Ball Valve (on-off)
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Ball Valve Quarter-TurnHydraulic systems .Water .Air.Oil .Petrochemical .High volume, high pressure and high
temperature flow .
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THROTTLING(Regulating)
SERICE
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Globe Valve (High pressure & value )
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Globe Valve.
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Globe Valve Ops.
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Needle Valve Fine accurate flow Cont.
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Butterfly Valve Flow Control Low Speed Both Side flow
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Butterfly Valve 2
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Prevention of back flow
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split disc check
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Split disc check valve operation
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lift check valve (Recommended forVapor service)
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Swing check valve (liquids)installed horizontal & vertical
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Swing check valve Ops.
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Piston check valves
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check valves
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Ball check valve (for heavy fluids) installed horizontal ,vertical & angle
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Check valve (Ball)
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Pressure Relive valves
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safety valves and relief valves Safety valves are primarily used with
compressible gases and in particular for steam and air services .
Relief valves are commonly used in liquid systems
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Pressure Relief Valves
Releases excess pressure to protect system. Use with Gases & Vapors & liquid. Open Full at once at set pressure. Outlet port larger than inlet port. Never adjust whilst in service.
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Type of Pressure Relief Valve
Safety valve :Used with compressible gases .steam and air services .
Relief valve : Used in liquid systems. as pressure overspill devices .
Safety relief valve : used either for liquid or compressible fluid.
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Pressure Relieve valve (safety valve) for clean air
Releases excess pressure (clean air)
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Safety valve - liquid applications, opens in proportion to the
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Typical examples of safety valves used on steam & Air systems
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pneumatic pressure reducing
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Control system would normally consist of the following components:
Control valves. Actuators. Controllers. Sensors.
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Globe Valve.
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Valve positions
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Orifice plate
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pressure gauge