• Lift check valve
  • Lift check valve

Lift check valve

Material of Lift check valve:  A536,A126,WCB,WC6,LCB,CF8,CF8M.CF3.CF3M,CN7M,904L

Size of Lift check valve:  1/2inch(DN15) - 20 inch (DN500)

Pressure of Lift check valve:  150LB(PN16)-2500LB(PN420)

Connection type:  Flange(FF,RF,FM,RTJ) BW

Kind of drive :  No

Operating temperature:   -100℃ - 600℃

Working medium :  water, gas,oil,Sulfuric acid and hydrochloric acid

Catalogue:

Cast steel gate,globe,check valves.pdf


Introduction for lift check valve.

Lift check valves are also called piston check valves. They are essentially globe valves without the stem and top works, allowing the disc to respond to flow rates and direction. The disc has linear movement and is typically body-guided with conical seating surfaces. Springs can be added above the disc to provide more closure force when the disc returns to its closed position. Some manufacturers include externally attached equalizer piping to increase the disc opening with lower flows. The equalizer pipe is an open-pressure communication device that maintains equal pressure above the disc and in the piping downstream of the disc.
Depending on the valve body configuration (Y-pattern, angle, or T-pattern), the pressure drop could be close to that of a tilting disc check valve or much higher. The disc of this check valve design is stable in any open position and can be used with a wide range of flow rates.


Features for lift check valve

Compact and reasonable product structure, reliable tightness and good performance;

Simple construction and lower cost

piston type disc ,small resistance to open the valve.

Can be designed with a Damping Cylinder.

Rapid closing and flexible actions of the valve disc .

Small closing impact, water hammer is not liable to be generated.


piston check valve

Main External and Connection Dimension for lift check valve(Unit:mm)


Main external and connection dimensions
DN L D D1 D2 b z-φd H

15 130 96 65 45 14 4-φ14 77
20 150 105 75 55 14 4-φ14 77
25 160 115 85 65 14 4-φ14 80
32 180 135 100 78 16 4-φ18 85
40 200 145 110 85 16 4-φ18 95
50 230 160 125 100 16 4-φ18 105
65 290 180 145 120 18 4-φ18 120
80 310 195 160 135 20 8-φ18 130
100 350 215 180 155 20 8-φ18 140
125 400 245 210 185 22 8-φ18 155
150 480 280 240 210 24 8-φ23 180
200 600 335 295 265 26 12-φ23 215
250 730 405 355 320 32 12-φ25 260
300 850 460 410 375 34 12-φ25 315

15 130 95 65 45 16 4-φ14 100
20 150 105 75 55 16 4-φ14 105
25 160 115 85 65 16 4-φ14 120
32 180 135 100 78 18 4-φ18 130
40 200 145 110 85 18 4-φ18 135
50 230 160 125 100 20 4-φ18 149
65 290 180 145 120 22 8-φ18 160
80 310 195 160 135 22 8-φ18 169
100 350 230 190 160 24 8-φ23 194
125 400 270 220 188 28 8-φ25 222
150 480 300 250 218 30 8-φ25 255
200 600 360 310 278 34 12-φ25 305
250 730 425 370 332 36 12-φ30 355
300 850 485 430 390 40 16-φ30 410



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