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Bidirectional butterfly valve

Bidirectional butterfly valve

Double directional butterfly valve, double directional pressure butterfly valve, double directional pressure metal hard seal butterfly valve. The use of an inclined elliptical butterfly plate radial dynamic balance sealing system reliably achieves zero leakage in butterfly valve sealing, and has been widely used by users both domestically and internationally, which is highly welcomed.

  • Item NO.:

    XUVAL33-333
  • Lead Time:

    45 Days
  • Product Orgin:

    CHINA
  • Brand:

    XUVAL
  • Shipping Port:

    Shanghai
  • Payment:

    100%TT
  • Color:

    silvery
  • MOQ:

    1
Products Details

Structural characteristics of bidirectional butterfly valves:

During the opening and closing process of the butterfly plate, this butterfly valve achieves no friction and jamming between the sealing ring of the butterfly plate and the sealing surface of the valve seat. The pressure angle on the sealing surface is greater than the friction angle. It adopts a "radial dynamic balance sealing system" design, which reduces the opening resistance of the butterfly plate. During the opening and closing process, the sealing surface of the butterfly plate can be quickly and instantly completed at various points along the 360 ° circumference, with point by point contact and point by point detachment, achieving a fast and accurate sealing action that automatically matches the closing contact. The all metal hard sealed butterfly valve adopts an integral metal seal on the sealing surface, and after mechanical processing, the elliptical cross-section sealing ring forms a sealing pair with the metal sealing surface of the valve seat. This sealing structure does not produce plastic deformation under high pressure, and there is no stamping stress, welding stress, elastic annealing, or brittle cracking phenomenon under high or low temperature. It solves the problem of leakage and reliable sealing performance caused by the unreasonable sealing surface structure of traditional butterfly valves.



Applicable scope of bidirectional butterfly valve:

This valve is suitable as a closed circuit sealing device, throttling device, and regulating device in high, medium, low, high temperature, and low temperature pipelines. Widely used in industries such as petroleum, chemical, metallurgy, mining, electricity, energy, transportation, farmland, hydropower, and construction. Especially suitable for working conditions with strict sealing, such as gas pipelines, and also suitable for corrosive media such as water, steam, oil, air, electricity, dust, and acids.


Adopting standards:

Design standards GB/T12238-1989;JB/T8527-1997
Flange connection size GB/T9113.1-2000;GB/T9113.2-2000 GB/T9115.1-2000;GB/T9115.2-2000
Structure length GB/T12221-1989
Pressure test GB/T13927-1992;JB/T9092-1999


Main external connection dimensions:

Nominal Diameter Structure length External dimensions Connection size (standard value)
L H D343H PN0.6MPa PN1.0MPa PN1.6MPa
mm inch flange Wafer H1 A1 B1 D D1 D D1 D D1
50 2 108 43 112 350 180 200 140 110 165 125 165 125
65 2  112 46 115 370 180 200 160 130 185 145 185 145
80 3 114 64 120 380 180 200 190 150 200 160 200 160
100 4 127 64 138 420 180 200 210 170 220 180 220 180
125 5 140 70 164 460 180 200 240 200 250 210 250 210
150 6 140 76 175 555 270 280 265 225 285 240 285 240
200 8 152 89 208 605 270 280 320 280 340 295 340 295
250 10 165 114 243 680 270 280 375 335 395 350 405 355
300 12 178 114 283 800 380 420 400 395 445 400 460 410
350 14 190 127 310 835 380 420 490 445 505 460 520 470
400 16 216 140 340 915 450 470 540 495 565 515 580 525
450 18 222 152 380 960 480 490 595 550 615 565 640 585
500 20 229 152 410 1020 480 490 645 600 670 620 715 650
600 24 267 154 470 1225 480 490 755 705 780 725 840 770
700 28 292 165 550 1355 640 660 860 810 895 840 910 840
800 32 318 190 640 1470 640 660 975 920 1015 950 1025 950
900 36 330 203 710 1545 750 860 1075 1020 1115 1050 1125 1050
1000 40 410 216 770 1795 850 900 1175 1120 1230 1160 1255 1170
1200 48 470 254 890 1965 850 900 1405 1340 1455 1380 1485 1390


Product Name: Bidirectional butterfly valve Product model: D373H/D343H
Driving method: Turbo, pneumatic, electric, manual Connection form: Clamp type, flange
Structural form: Triple eccentricity Sealing structure: Metal hard seal
Pressure range: 150LB-2500LB Nominal diameter: DN50-1400

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    If you are interested in our valves and want to know more details,please leave a message here,we will reply you as soon as we can.