Flat gate valve

Flat gate valve

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  • ● Reasonable Price
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    Product Details

    Technical Parameters

    Product model: Z43WF

    Nominal diameter:  DN25~ 1200mm

    Nominal pressure: PN1.6~15.0MPa

    Operating temperature: -29°C~121°C

    Applicable medium: oil, natural gas, water, etc.


    Product Structure Features

    1. Casting and welding body.
    2. The seat ring is O ring and pre-tightening force structure, bidirectional seal, its torque of open and close is only half of general valve, easy to open and close.
    3. PTFE material is inserted in the seat sealing surface, which can obtain dual-seal (PTFE to metal seal and metal to metal seal), and it also could clean dirt on wedge disc.
    4. Sealant injection valve specially installed for metal to metal seal valve, sealant flow into sealing face through injection valve and seat to reach zero leakage.
    5. The disc for diversion hole valve, whatever in full open or close condition, always keep touching the seat ring to protect the sealing face from being directly eroded by medium, valve use  life will be extended.
    6. When fully opened, the valve's channel is smooth and linear, with an extremely small flow resisting coefficient and no pressure loss, and the pipeline can be cleaned with hair-ball through it.
    7. Stem packing structure has self-sealing capacity, needless of frequent adjusting, easy to open and close and reliable sealing performance.There is an auxiliary sealant injection valve on the position of packing box,  absolutely reliable sealing and truly realize zero leakage, its structure design can solve the problem of packing box leaking.
    8. When valve closed, automatically discharge high pressure in cavity and ensure safety.
    9. Whole sealing structure, well protection and can adapt to all requirements.
    10. Indicating arm or sight-glass to show valve open and close status.


    Main overall connection dimensions

    PN（MPa） DN
    （MPa）         		SIZE（mm）
    L D D1 D2 b f z-d H H1 E W
    1.6 40 165 150 110 84 18 3 4-18 365 415 90 305
    50 178 165 125 99 20 3 4-18 387 455 105 305
    65 190 185 145 118 20 30 8-18 466 545 133 305
    80 203 200 160 132 20 3 8-18 520 645 156 305
    100 229 220 180 156 22 3 8-18 655 740 182 305
    150 267 285 240 211 24 3 8-22 823 980 269 305
    200 292 340 295 266 24 3 12-22 1010 1210 350 305
    250 330 405 355 319 26 3 12-26 1220 1470 412 305
    300 356 460 410 370 28 4 12-26 1405 1805 505 305
    350 381 520 470 429 30 4 16-26 1580 1950 560 305
    400 406 580 525 480 32 4 16-30 1777 2197 665 305
    500 457 715 650 609 36 4 20-33 2132 2652 817 458
    600 508 840 770 720 38 5 20-36 2545 3201 920 458
    2.5 40 165 150 110 84 18 3 4-18 365 415 90 305
    50 178 165 125 99 20 3 4-18 387 455 105 305
    65 191 185 145 118 20 3 8-18 466 545 133 305
    80 203 200 160 132 24 3 8-18 520 645 156 305
    100 229 235 190 156 24 3 8-22 655 740 182 305
    150 267 300 250 211 28 3 8-26 823 980 269 305
    200 292 360 310 274 30 3 12-26 1010 1210 350 305
    250 330 425 370 330 32 3 12-30 1220 1470 412 305
    300 356 485 430 389 34 4 16-30 1405 1805 505 305
    350 381 555 490 448 38 4 16-33 1580 1950 560 305
    400 406 620 550 503 40 4 16-36 1777 2197 665 305
    500 457 730 660 609 44 4 20-36 2132 2652 817 458
    600 508 845 770 720 46 4 20-39 2545 3201 920

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