Ventilation butterfly valve
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  • Ventilation butterfly valve

Ventilation butterfly valve

Model:

D41W-1C

Specifications:

DN50-DN800

Applicable temperature:

-20 ℃-350 ℃

Applicable medium:

Air, dusty gas


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  • Product Description
  • Detailed parameters
  • Ventilation butterfly valve is made of the same material as the valve body to form a sealing ring. Its adaptation temperature depends on the material selection of the valve body. It is generally applicable to industrial, metallurgical, environmental protection and other pipelines for ventilation and adjustment of medium flow. The medium temperature is ≤ 300 ℃ and the nominal pressure is 0.1Mpa. On the pipeline, it is used to connect, open and close or adjust the medium volume. Its main features are:

    1, the design is novel, reasonable, unique structure, light weight, open and close quickly.

    2. Small operating torque, convenient operation, labor-saving dexterity.

    3, the use of adaptive materials to meet different media temperature machine corrosive media.

    The ventilation butterfly valve is divided into manual and electric drive, which can be driven by a motor or turbine to drive the actuator, so that the butterfly plate can rotate freely within the range of 90 ° to achieve the purpose of opening and closing or adjusting the medium flow. The installation requirements are as follows;

    1. The installation position, height, import and export direction must meet the design requirements. Pay attention to the direction of medium flow should be consistent with the direction of the arrow marked on the valve body, and the connection should be firm and tight.

    2. The valve must be visually inspected before installation, and the nameplate of the valve should comply with the current national standard "General Valve Marking" GB 12220. For valves with working pressure greater than 1.0 MPa and cutting off on the main pipe, strength and tightness test shall be carried out before installation, and the valve shall be used only after it is qualified. During the strength test, the test pressure is 1.5 times of the nominal pressure, the duration is not less than 5min, and the valve housing and packing shall be qualified without leakage. During the tightness test, the test pressure is 1.1 times of the nominal pressure; the duration of the test meets the requirements of GB 50243.


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  • D41W Ventilation butterfly valve shape and connection size

    DN Overall dimension Connection dimensions Connection dimensions
    0.25MPa 0.6MPa
      L H H0 A B D D1 D2 N-d D D1 D2 N-d
    50 80 70 215 270 65 140 110 88 4-14 140 110 88 4-14
    65 80 80 235 270 65 160 130 108 4-14 160 130 108 4-14
    80 80 95 263 270 65 190 150 124 4-18 190 150 124 4-18
    100 80 105 83 270 65 210 170 114 4-18 210 170 144 4-18
    125 80 120 313 310 65 240 200 171 8-18 240 200 174 8-18
    150 80 132 338 310 65 265 225 199 8-18 265 225 199 8-18
    200 140 160 593 165 183 320 280 254 8-18 320 280 254 8-18
    250 140 187 650 165 283 375 335 309 12-18 375 335 309 12-18
    300 170 220 715 165 283 440 395 363 12-22 440 395 363 12-22
    350 170 245 814 175 334 490 445 413 12-22 490 445 413 12-22
    400 190 270 863 175 334 540 495 463 16-22 540 495 463 16-22
    450 190 297 918 175 425 595 550 518 16-22 595 550 518 16-22
    500 190 322 1016 210 425 645 600 568 20-22 645 600 568 20-22
    600 210 377 1128 210 125 755 705 667 20-26 755 705 667 20-26
    700 210 430 1233 210 425 860 810 772 24-26 860 810 772 24-26
    800 210 487 1344 210 425 975 920 878 24-30 975 920 878 24-30