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BW Weld End Metal Seal Butterfly Valve BFV Bi - Directional Bubble Tight Shut Off

Categories Metal Seated Butterfly Valve
Brand Name: Tengs Valve
Model Number: D63H
Certification: ISO, CE
Place of Origin: China
MOQ: 1 Pc
Price: Negotiable
Payment Terms: L/C, T/T
Supply Ability: 300 Pcs
Delivery Time: 30 Days
Packaging Details: Seaworthy Plywoods
Body Material: Cast Steel: Carbon Steel, Stainless Steel
Trim: 13Cr, SS304, SS316
Size: 2in - 60in
Pressure Rating: Class 150LB - 300LB - 600LB
Actuator: Manual, Gear Operated, Pheumatic, Electric Actuator
Connection Ends: Weld End, Butt Weld, BW
Seat: Metallic Seat, Hard Seal
Other: OEM available
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    BW Weld End Metal Seal Butterfly Valve BFV Bi - Directional Bubble Tight Shut Off

    Api609 High Performance Metal Seated Cast Steel Butterfly Valve Weld End BW D63H


    Quick Details

    1. Valve Type: BW End Butterfly Valve Metal Seated (Hard Seal)

    2. Standard: API609

    3. Pressure rating: Ansi Class 150LB -300LB - 600LB

    4. Size: 2” - 60"

    5. Body materials: Cast Steel (Carbon steel, Stainless steel)

    6. Disc: Carbon Steel (WCB), Stainless Steel (CF8 / CF8M)

    7. Stem material: Stainless Steel 13Cr, F304 / F316, 17 -4PH

    8. Actuator: Manual, Worm gear, Pneumatic actuator etc


    Features

    1. The Seal Principle of Hard Seal Butterfly Valve Triple Offset

    The Triple Offset Butterfly Valve provides a bi-directional bubble tight shut-off.This geometry ensures that the disc seal contacts the body seat only at the final shut-off position without rubbing or galling, providing a torque generated resilient seal with sufficient “wedging” to ensure auniform seal contact.


    Triple Offset Butterfly Valve Geometry

    2. The Triple Offset Geometry
    OFFSET 1 The shaft is offset behind the seat axis to allow complete sealing contact around the entire seat

    OFFSET2 The shaft centerline is offset from the pipe and valve which provides interference free opening and closing of the valve

    0FFSET3 The seat cone axis is offset from the shaft centerline to eliminate friction during closing and opening and to achieve uniform compressive sealing around the entire seat.


    3. Friction Free Sealing for Long Cycle Life
    (1) Seat is Cr13 Metal alloy or hardfaced with Stellite as standard.

    (2) The gasket is spiral wound SS/Graphite for zero leakage.

    (3) Seat ring forces are generated by the torque during closing uniformly around the entire circumference. The resilient seal fleses and energizes, assuming the shape of the seat. The compression forces equally distributed around the perimeter provide a tight bi-directional shut off.
    The resiliency of the seal allows the valve body and disc to contract or expand, without the risk of jamming due to temperature fluctuations. It is self-adjusting.


    Standards

    Design and Manufacture; API 609. MSS SP-67, MSS SP-68
    Inspection and Test: API S98

    End flange dimension: ASME B16 5 (NPS≤24). ASME B16 47 B series
    BW end dimension: ASME B16.25

    Face to face and end to end; API 609

    Pressure-temperature ratings: ASMF B16.34


    Application

    Hard Seal (Metal Seated)Butterfly Valve triple offset series are used in such fields as metallurgy, light industry, electric power, petrochemistry, coal gas channel etc.


    Description


    Triple Offset Butterfly Valve Drawing


    1. Materials List (Triple Offset Butterfly Valve)


    No.Part NameMaterials
    1BodyASTM A216 WCBASTM A351 CF8ASTM A351 CF3ASTM A351 CF8MASTM A351 CF3M
    2PinASTMA29 1035 / A276 304ASTM A276 304ASTM A276 304LASTM A276 316ASTM A276 316L
    3Stem420 / 304 / 316304304L316316L
    4DiscWCB / CF8 / CF8MA351 CF8A351 CF3A351 CF8MA351 CF3M
    5Seal Ring304/316+Graphife / PTFE304+Grapnite / PTFE304L+Graphite / PTFE316+Graphite / PTFE316L +Graphite / PTFE
    6Retainer FlangeA105 / A182 F304 / F316F304A182 F304LA182 F316A182 F316L
    7BoltB7 / B 8/ B8MB8B8B8MB8M
    8BoltB7B8B8B8MB8M
    9CoverA105A182 F304A182 F304LA182 F316A182 F316L
    10GasketGraphiteGraphiteGraphiteGraphiteGraphite
    11BushingLuberized bronze304 Nitriding304L Nitriding316 Nitriding316L Nitriding
    12Bushing304 Nitriding
    13Packing SeatA105/304304304L316316L
    14PackingGraphite
    16Packing CoverWCBCF8CF3CF8MCF3M
    17NutA194 2HA194 8A194 8A194 8MA194 8M
    18BoltA193 B7A193 B8A193 B8A193 B8MA193 B8M
    19YokeWCBWCB Galvanization, CF8
    Drive ActuatorHandle, Electric actuator, Worm gear, Pheumatic actuaror

    2. Main Connection Dimensions for BW Butterfly Valve

    ClassSizeLClassSizeLClassSizeL
    NPSDNBWNPSDNBWNPSDNBW
    150Lb250150300LB250150600Lb250150
    2 1/2651702 1/2651702 1/265170
    380180380180380180
    410019041001904100190
    512520051252005125200
    615021061502106150210
    820023082002308200230
    102502501025025010250250
    123002701230027012300270
    143502901435029014350290
    164003101640031016400310
    184503301845033018450330
    205003502050035020500350
    246003902460039024600390
    2665041026650410
    2870043028700430
    3075045030750450
    3280047032800470
    3690051036900510
    3895053038950530
    401000550401000550
    421050570421050570
    441100570441100570
    481200630481200630
    521300630
    561400710
    601500710
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