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  • 8/16/2019 Control-Valves(www.mohandesyar.com).pdf

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    : . 1. Control Valves2. Throttling3. Tight Shut off

    4. Valve Body5. Actuator

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    1. Stem2. Plug3. Seat4. Actuator5. Terminology6. Body7. Screwed threads

    8. Flanges9. Welded end

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    bonnet.

    1. Trim

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    1. Yoke2. Actuator

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    (Fail Safe) .

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    ” “ ).(

    1. Limits of Travel2. Shut down

    3. Spring Loaded4. Normally Open

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    ” “ ).(

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    1. Normally Close2. Fail Close3. Air to Open4. Fail Open

    5. Air to Close6. Criteria

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    1. Slam Shut

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    ).(

    . .

    )

    .( .

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    1. Double- Ported

    2. Tight Shut- off3. Wear

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    1. Linear

    2. Quick Opening3. Equal Percentage

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    (T.F.E)Nitrile . °

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    1. Rotary Shaft2. Throttling

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    :

    . °

    . .

    . Vee

    ... .

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    1. Ball Valve2. Bore

    3. Shut down4. Counteract

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    ° .

    1. Rotary Eccentric Plug2. Lever

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    . .

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    1. On- Off

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    1. Throttling Action2. Quick Opening3. Linear4. Modified Linear

    5. Equal Percentage6. Modified Parabolic

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    % .

    .

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    1. Self- Actuated

    2. Regulators3. relief valves

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    . %

    % .

    . .

    .

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    . .

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    1. Compromise2. Crevices

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    . Vee- PortPort guid

    .

    .

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    Vee

    .

    1. Cage Trim Valves2. Unobstructed

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    ”“

    . .

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    1. Windows

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    . . . .

    .

    ) . *=.( .

    . .

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    . .

    .

    . .

    1. Intrinsically Safe2. Single Acting

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    . ” “

    . .

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    ( Psi) , bar( - Psi) , - bar.

    1. Air to Close2. Fail- Safe

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    . .

    . ( Psi) bar.

    .

    (S/ D) . .

    . S/ D

    .

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    . . On- Off

    .

    1. Shut Down2. Spring Opposed

    3. Reservoir4. accumulator

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    .

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    . .

    : • • • • .

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    Close

    . Close

    .

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    1. Hand Wheel2. By- pass valve

    3. Top mounted4. Side mounted

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    . . :

    ♦ .♦ .♦

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    . . .

    . . .

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    1. Split Range2. booster

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    . .

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    1. booster

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    :

    ), bar psi.(

    . . .

    . .

    . . .

    .

    .

    . .

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    . .

    . .

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    . .

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    1. Cam

    2. Spring Range3. Exhaust port

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    • • • • •

    • • • •

    .

    ” “ .

    1. Accessories2. Limit Switches3. Solenoid Valves4. Transducers5. Lock up Valves6. Capacity Tanks7. Top mounted

    8. Side mounted9. Rules of thumb

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    . .

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    . MooreFoxboroTaylorBailey

    K & M .

    . :

    1. Turbulence2. Drilled & Tapped Bosses

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    1. Viscous

    2. Solid- bearing fluids3. Time lag

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    ) Fisher(

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    : • • • • • •

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    . .

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    1. Solenoid Valves2. On- Off Switching

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    . A

    B . B

    A .

    1. Energize

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    ) Automatic Switch(

    ) Bellows- Valvair IBEC(

    1. Pilot Operated

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    ) Automatic Switch(

    ) Automatic Switch(

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    . ) Automatic Switch(

    . .

    1. Lockup

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    1. Fisher Controls Co.

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    . .

    . .

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    1. Capacity Tank

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    ).(

    ).(

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    1. Booster Relays2. Regulators

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    1- 1-1-

    2- 2-1- 2-2- 2-3- 2-4- 2-5- 2-6-3- 4-

    4-1- 4-2- 4-3-

    5- 5-1- 5-2- 5-3-

    6- 6-1-

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    6-2- 6-3- 6-4-

    6-5- 6-6- 7-

    7-1- 7-2- 7-3-

    8- 8-1-

    9- 9-1- 9-2- 9-3- 9-4-

    9-5- 9-6- 9-7- 9-8- )( 9-9-

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    : :

    :

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    : :1384

    :

    .

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    Control Valves

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    Control Valves

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    (Common Course)

    .

    .

    ” “” “

    ) ( .

    ” “ ” “ .

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    ›› – ‹‹

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