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Fakai Valve Factory Site: Yongxing Industrial Zone, Longwan District, Wenzhou City Tel: 0577-88767789
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H41N / F Lifting Gas Check Valve

H41N / F Lifting Gas Check Valve Structure
H41N / F Lifting Gas Check Valve Structure

H41N / F lifting gas check valve uses the fluid pressure difference and its weight to achieve lifting. It is suitable for most of the horizontal pipelines in the tank. It automatically prevents the medium from flowing backward and protects upstream equipment. It is suitable for liquefied petroleum gas and natural gas. , Gas and other media as a one-way flow device.

working principle

The gas lift check valve opens and closes by itself based on the flow of the medium and the force. It uses PTFE or nylon plastic as the material of the sealing surface, and uses the polytetrafluoroethylene or nylon plastic to generate a small amount under the action of the medium pressure. The deformation improves the sealing performance, slows down the impact of the pressure of the medium, prevents sparks caused by static electricity, protects valves and pipelines, and is suitable for gas pipelines. Its role is to prevent the medium in natural gas, gas, coal gas, and liquefied petroleum gas pipelines from flowing backward.

Structural features

  1. Teflon or nylon plastic is used as the sealing surface material to improve the sealing performance.
  2. The resistance is small, and the lifting and lowering is realized by using the fluid pressure difference and its own weight.
  3. The valve is a fully enclosed structure with no moving seal and never leaks.

Performance parameter

Nominal pressure Shell test Seal test Applicable medium Suitable temperature
2.5 3.75 2.75 Liquefied gas, natural gas, etc. -40 ~ + 80 ℃
4.0 6.0 4.4

Part material

Body and cover Disc Sealing surface
WCB Carbon steel Stainless steel and nylon

Dimension table

Nominal diameter DN (mm) H41N-25 type main dimensions (mm) weight
L D D1 D2 b f Z-фd H D3 (kg)
15 130 95 65 45 16 2 4-14 100 - 5
20 150 105 75 55 16 2 4-14 105 - 7
25 160 115 85 65 16 2 4-14 115 100 9
32 190 135 100 78 18 2 4-18 120 120 10
40 200 145 110 85 18 3 4-18 140 135 15
50 230 160 125 100 20 3 4-18 150 150 20
65 290 180 145 120 twenty two 3 8-18 160 175 25
80 310 195 160 135 twenty two 3 8-18 175 200 32
100 350 230 190 160 twenty four 3 8-23 200 230 57
125 400 270 220 188 28 3 8-25 230 273 -
150 480 300 250 218 30 3 8-25 265 330 -
200 600 360 310 278 34 3 12-25 300 365 -