Swing rubber flap check valve
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  • Swing rubber flap check valve

Swing rubber flap check valve

Model:

Specifications:

DN50-DN800

Applicable temperature:

≤ 80 ℃

Applicable medium:

Water


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  • Product Description
  • Detailed parameters
  • Swing rubber flap check valve is mainly composed of three main parts: valve body, valve cover and valve flap. The rubber flap is made of steel plate as pressure-bearing part and strengthened nylon cloth as substrate, wrapped with high-quality vulcanized rubber, with good sealing elasticity, completely isolating the valve plate metal from the medium, and the valve seat adopts ceramic spraying process to make the valve applicable life longer.

    The rubber flap check valve is installed at the outlet of the water pump. When the pump is started, the valve plate rotates around the pin shaft outside the valve seat by relying on the flow and strength of the medium. When the pump is stopped, the valve plate closes by itself by relying on the backflow of the medium and the weight of the valve plate to prevent the backflow of the medium. The valve is widely used in petroleum, chemical, food, textile, papermaking, hydropower and other industries, used for corrosive, non-corrosive gases, liquids and other cut-off backflow, eliminate destructive water hammer, protect pipes and pumps. Because the sealing ring of this product adopts inclined design, the closing time is short, which can reduce the water hammer pressure. The disc is made of nitrile rubber and steel plate by high temperature pressing, erosion resistance, good sealing performance, simple product structure, maintenance, repair and transportation are very convenient.

    Swing rubber flap check valve adopts full-flow area design, with small head loss, not easy to accumulate debris, convenient maintenance, etc. It has small valve opening stroke and fast speed, and is mainly used for water supply and drainage system. For large diameter DN≥ 400 swing rubber flap check valve can choose slow closing cylinder device, so that the valve is divided into fast closing and slow closing two stroke stages, slow closing stroke time can be adjusted.


    Warm tips:

    All text, data, and images in this article are for reference only. Need to see moreElectric circular louver valveFor details of performance parameters, structural size parameters, prices, etc., or for high-quality printed samples, pleaseContact Us


     

  • Shape and connection dimension of swing rubber flap check valve

    DN H L 1.0MPa 1.6MPa 2.5MPa
    D D1 N-d D D1 N-d D D1 N-d
    50 / 203 165 125 4-$19 165 125 4-$19 165 125 4-$19
    65 / 216 185 145 4-$19 185 145 4-$19 185 145 8-$19
    80 / 241 200 160 8-$19 200 160 8-$19 200 160 8-$19
    100 / 292 220 180 8-$19 220 180 8-$19 235 190 8-$23
    150 / 381 285 240 8-$23 285 240 8-$23 300 250 8-$28
    200 280 495 340 295 8-$23 340 295 12-$23 360 310 12-$28
    250 330 622 395 350 12-$23 405 355 12-$28 425 370 12-$31
    300 365 698 445 400 12-$23 460 410 12-$28 485 430 16-$31
    350 390 787 505 460 16-$23 520 470 16-$28 555 490 16-$34
    400 440 813 565 515 16-$28 580 525 16-$31 620 550 16-$37
    450 440 914 615 565 20-$28 640 585 20-$31 670 600 20-$37
    500 460 1016 670 620 20-$28 715 650 20-$34 730 660 20-$37
    600 530 1295 780 725 20-$31 840 770 20-$37 845 770 20-$40
    700 605 1448 895 840 24-$31 910 840 24-$37 960 875 24-$43
    800 605 1448 1015 950 24-$34 1025 950 24-$40 1085 990 24-$49