pneumatic lug butterfly valv

Pneumatic lug butterfly valve

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






    Category:

    Description

    Pnuematic butterfly valve introduction

    Pneumatic butterfly valve is combined with pneumatic actuators and central line of butterfly valves. The valve stem drive the valve corn rolling 90 in the body which can realize the full open or full close action. This product can according to the sealing performance into metal seal and soft seal with compact structure、small volume、reliable operation、good sealing、easy maintenance installation convenient and the adoptability is strong advantages. Can be widely used in petroleum、chemical industry、light industry、papermaking industrial、pharmaceutical、car automatic control system on a remote concentrated or local control.

    Technical parameters

    Body ASTM A536 65-45-12, WCB, CF8M
    Disc ASTM A536 65-45-12 Nylon coated, CF8, CF8M, 2507, 1.4462
    Seat EPDM,NBR,FRM.PTFE
    Stem SS420,SS431
    Body style LUG
    Nominal diameter 2″ – 80″ (DN50mm – DN2000mm)
    Top flange ISO5211
    Operating pressure: 16bar for DN50-DN300, 10bar for DN350-DN2000
    Temperature range: -20 °C to + 140 °C (depending on pressure, medium and material)
    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.

    Outline size drawing: 

    LUG BUTTERFLY VALVE

    Size Inch GB standard size(mm)PN10/PN16 Actuator size
    L D2 H1 H2 n-Φd A P B
    50 2 42 125 193 80 4-16 163 96 76
    65 2 1/2 45 145 212 89 4-16 195 115 91
    80 3 45 160 232 95 8-16 195 115 91
    100 4 52 180 280 114 8-16 217 137 11
    125 5 55 210 302 127 8-16 258 147 122
    150 6 55 240 330 139 8-20 299 165 136
    200 8 60 295 419 175 8-20/12-20 349 182 153
    250 10 66 350/355 482 203 12-20/12-24 397 199 173
    300 12 76 400/410 553 242 12-20/12-24 473 221 192
    350 14 76 460/470 635 267 16-20/16-24 560 249 213
    400 16 86 515/525 709 301 16-24/16-27 601 280 243
    450 18 105 565/585 750 381 20-24/20-27 738 383 356
    500 20 130 620/650 840 387 20-24/20-30 738 383 356
    600 24 151 725/770 1021 457 20-27/20-33 940 434 415

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    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

     

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