PTFE Lined Pneumatic Butterfly Valve

Body:ASTM A536 65-45-12, WCB, CF8M
Disc:CF8M,1.4462,CF8M PEP lined,CF8 EPDM lined
Seat:PTFE
Stem:SS420,SS431
Body style:wafer,LUG,Flange
Nominal diameter:2″ – 80″ (DN50mm – DN2000mm)
Flange accommodation:DIN PN10 PN16,JIS 5K 10K,ANSI CLASSS 150LB
Pneumatic actuator:Double acting,Single acting







    Description

    Fluorine lined pneumatic butterfly valve

    The fluorine lined butterfly valve seat and valve plate is made by the PTFE, has both the common butterfly valve mechanical strength, and also can play strong resistance to chemical medium properties of PTFE or PA. The anticorrosion performance is excellent. It is applicable to all kinds of acid、alkali 、salt and oxidant、reductant、organic solvent and other media. It is widely used in chemical industry、petroleum、medicine、food、 steel melting、the papermaking 、the water and electricity system of gases、liquids、semifluid piping and container closure and adjust equipment.


    Technical parameters

    Body GGG40
    Disc/shaft one piece CF8M 1.4462 CF8M FEP lined CF8 EPDM lined
    Seat PTFE,FPM,EPDM,PU,NBR PTFE EPDM
    Body style wafer
    Nominal diameter 2″ – 24″ (DN50mm – DN600mm)
    Top flange ISO5211
    Operating pressure 16bar for DN50-DN200, 10bar for DN250-DN600
    Temperature range -20 °C to + 180 °C (depending on pressure, medium and material)
    Body style Wafer,LUG,Flange
    Flange accommodation EN 1092 PN 6/PN10/PN16
    ASME Class 150
    AS 4087 PN10/ PN16
    JIS 5K/10K

    Pneumatic actuator

    action
    Double acting Failure to maintain
    Single acting normally closed Failure to close
    Single acting normally open Failure to open
    Optional accessory Solenoid valve
    limit switch box
    air filter relief pressure valve,
    E/P positioned
    manual device.

    pfa pneumatic butterfly valve size
    Data information

    DN Inch GB Standard size (mm)  PN10/PN16
    L( Wafer ) L(Flange) H C D1 n-d kg P A
    50 2 43 108 212 130 120 4-18 5 217 137
    65 2 1/2 46 112 230 150 136.2 4-18 6 258 147
    80 3 46 114 233 164 160 4-18/8-18 8 258 147
    100 4 52 127 270 188 185 8-18 9 299 165
    125 5 56 140 298 220 215 8-18 12 349 182
    150 6 56 140 337 252 238 8-23 15 397 199
    200 8 60 152 407 305 295 8-23/12-23 23 473 221
    250 10 68 165 481 370 357 12-23/12-25 32 560 249
    300 12 78 178 555 430 407 12-23/12-25 45 601 280
    350 14 78 190 610 470 467 16-23/16-25 70 738 383
    400 16 102 216 715 565 515 16-25/16-30 99 738 383
    450 18 114 222 778 620 565 20-25/20-34 110 738 383
    500 20 127 229 870 695 620 20-25/20-34 135 940 434

    working principle

    Pneumatic actuator working principle:
    Double acting

    Double acting working

    (Counterclockwise)
    Compressed air to Port 2 forces the pistons outwards, causing the output shaft to turn counterclockwise, while the air is being exhausted from Port 4.(Clockwise) Air to Port 4 forces the pistons inwards, causing the pinion to turn clockwise while the air is being exhausted from Port 2.

    Single actingSingle acting working

    (Clockwise)
    Loss of air pressure, the stored energy in the springs forces the pistons inwards,the pinion turns clockwise, while air is being exhausted from Port 4.

    pneumatic actuator