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Fakai Valve Factory Site: Yongxing Industrial Zone, Longwan District, Wenzhou City Tel: 0577-88767789
Fax: 0577-85983279
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QH41-42M horizontal and vertical mute check valve

QH41-42M horizontal and vertical mute check valve structure
QH41-42M horizontal and vertical mute check valve structure

Scope of application

The sealing principle of QH41-42M horizontal and vertical silent check valve is composed of a stainless steel valve disc with spherical surface and a non-metallic material (8202) sealing ring that is wear-resistant, high temperature resistant and highly resilient. So good sealing performance and long life. Horizontal pipes can be installed, which can be used to control the backflow of pipeline medium in petrochemical, water supply and drainage systems, etc. It has an automatic shutdown function and is an ideal non-leakage energy-saving check valve.

Part material

Part Name material
QH41-42M-16 QH41-42M-25Q
Valve body HT200 QT450-10
Disc stainless steel
Sealing ring Composite graphite

Performance specifications

model Nominal pressure
(MPa)
Test pressure (MPa) Working temperature (℃) Applicable medium
case Sealed (liquid) Sealed (gas)
QH41-42M-16 1.6 2.4 1.8 0.6 ≤250 ℃ Water, steam, oil
QH41-42M-25Q 2.5 4.0 2.8

Dimensions

model Nominal diameter
DN (mm)
Size (mm)
L D D1 D2 bf z-Φd
QH41-42M-16 15 130 95 65 45 16-2 4-14
20 150 105 75 55 16-2 4-14
25 160 115 85 65 16-2 4-14
32 180 135 100 78 18-2 4-18
40 200 145 110 85 18-3 4-18
50 230 160 125 100 20-3 4-18
65 290 180 145 120 20-3 4-18
80 310 195 160 135 22-3 8-18
100 350 215 180 155 24-3 8-18
125 400 245 210 185 26-3 8-18
150 480 280 240 210 28-3 8-23
200 600 335 295 265 30-3 12-23
250 730 405 355 320 32-3 12-25
QH41-42M-25Q 15 108 95 65 45 16-2 4-14
20 117 105 75 55 16-2 4-14
25 127 115 85 65 16-2 4-14
32 140 135 100 78 18-2 4-18
40 165 145 110 85 20-3 4-18
50 203 160 125 100 20-3 4-18
65 216 180 145 120 22-3 8-18
80 241 195 160 135 22-3 8-18
100 292 230 190 160 24-3 8-23
125 330 270 220 180 28-3 8-25
150 356 300 250 218 30-3 8-25
200 495 360 310 278 34-3 12-25
250 622 425 370 335 36-3 12-30
300 698 485 430 389 38-4 16-30