各种阀门的工作动画演示
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VALVES TYPE &
FUNCTION
VALVES
Valves
●On-Off Service
●Throttling (Regulating) Service ●Prevention of back flow
●Pressure control (Control Valve)
ON –OFF SERVICE
Gate valve.
Gate Valve :-
●ON –Off Valve ,Used in:●1-Water.
●2-Oil.
●3-Gas
●4-Steam
●And Other Fluid Services.
Wedge gate valve and parallel slide valve
Gate valve 2.
Plug valve (on-off) or Cock low-pressure
Plug valve (on-off) or Cock
Plug valve Applications
●Gas and liquid fuel
●Water.
●Extreme temperature flow
●Boiler feed water.
●Low Pressure Steam .
●Corrosive Liquids and Gases
Ball Valve (on-off)
Ball Valve Quarter-Turn
●Hydraulic systems .
●Water .
●Air.
●Oil .
●Petrochemical .
●High volume, high pressure and high temperature flow .
THROTTLING (Regulating)
SERICE
Globe Valve
(High pressure & value )
Globe Valve.
Globe Valve Ops.
Needle Valve
Fine accurate flow Cont.
Butterfly Valve
●Flow Control
●Low Speed
●Both Side flow
Butterfly Valve 2
Prevention of
back flow
split disc check
Split disc check valve operation
lift check valve(Recommended for Vapor service)
Swing check valve (liquids) installed horizontal & vertical
Swing check valve Ops.
Piston check valves
check valves
Ball check valve(for heavy fluids) installed horizontal ,vertical & angle
Check valve (Ball)
Pressure Relive valves
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
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.
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.
Pressure Relieve valve (safety valve) for clean air
Releases excess pressure (clean air)
Safety valve -liquid applications, opens in proportion to the
Typical examples of safety valves used on steam & Air systems
pneumatic pressure reducing