Lift check valve

Short Description:

Lift check valve means to rely on the flow of the medium itself automatically open, close the valve, rely on the weight of the valve and fluid pressure in the automatic valves to prevent back flow of fluid medium, also known as the check valve, check valve, reflux valve, and the back pressure valve. The check valve is an automatic valve, its main role is to prevent the media back to prevent the discharge of the pump and drive motor reversal, as well as container media. The check valve can also be used to which the pressure may rise to the auxiliary system supplies more than the system pressure pipeline.


Product Detail

Product Tags

升降式止回阀

Technical data

PN(MPa)Nominal pressure 1.6 2.5 4.0
(MPa)Test pressure Shell strength test 2.4 3.75 6.0
Seal test (Liquid) 1.76 2.75 4.4
Seal test (Gas) 0.5~0.7
Suitable medium water,steam,oil PNiter acids Roil
Suitable temperature  ≤425 ≤100  ≤550

Meterial of main parts

No.

Part name

Meterial

ASTM

GB

1

Valve body

WCB, WC1,WC6,WC9,C5 CF8,CF8M,CF8C,CF3,CF3M

WCB,WC1,WC6,WC9,C5 CF8,CF8M,CF8C,CF3,CF3M

2

Valve disc

WCB,WC1,WC6,WC9,C5 CF8,CF8M,CF8C,CF3,CF3M

WCB,WC1,WC6,WC9,C5 CF8,CF8M,CF8C,CF3,CF3M

3

Stud bolts

A193-B7,A320-B8,A193-B8M

35CrMoA,25Cr2MoV,0CM8Ni9,0Cr17Ni12Mo2

4

Hex nuts

A194-2H,A194-8,A194-8M

45,35CrMoA,25Cr2MoV, 0Cr18Ni9,0Cr17Ni12Mo2

5

Gasket

Flexible graphite + stainless steel

Flexible graphite + stainless steel

6

valve bonnet

A105,F11,F22,F5,F9 F304, F316, F321, F304L, F316L

25,1Cr18Ni9Ni,0Cr18Ni12Mo2Ti 20Cr1Mo1V,25Cr2MoV

 

Main dimensions

PN(MPa) DN(mm) L H D D1 D2 D6 b f f2 Z-ød
1.6 15 130 77 95 65 45 - 14 2 - 4-14
20 150 77 105 75 55 - 14 2 - 4-14
25 160 80 115 85 65 - 16 2 - 4-14
32 180 85 135 100 78 - 16 2 - 4-18
40 200 95 145 110 85 - 16 3 - 4-18
50 230 105 160 125 100 - 16 3 - 4-18
65 290 120 180 145 120 - 18 3 - 4-18
80 310 130 195 160 135 - 20 3 - 8-18
100 350 140 215 180 155 - 20 3 - 8-18
125 400 155 245 210 185 - 22 3 - 8-18
150 480 180 280 240 210 - 24 3 - 8-23
200 600 245 335 295 265 - 26 3 - 12-23
 2.5  15 130 100 95 65 45  -  16  2  -  4-14
 20 150 105 105 75 55  -  16  2  -  4-14
 25 160 120 115 85 65  -  16  2  -  4-14
 32 180 130 135 100 78  -  18  2  - 4-18
 40 200 135 145 110 85  -  18  3  -  4-18
 50 230 149 160 125 100 - 20 3 - 4-18
 80 310 169 195 160 135 - 22 3 - 8-18
100 350 194 230 190 160 - 24 3 - 8-23
150 480 255 300 250 218 - 30 3 - 8-25
200 600 305 360 310 278 - 34 3 - 12-25
 4.0 15  130  100 95 65 45 40 16 2 4 4-14
20 150 105 105 75 55 51 16 2 4 4-14
25 160 120 115 85 65 58 16 2 4 4-14
32 180 130 135 100 78 66 18 2 4 4-18
40 200 135 145 110 85 76 18 3 4 4-18
50 230 149 160 125 100 88 20 3 4 4-18
80 310 169 195 160 135 121 22 3 4 8-18
100 350 194 230 190 160 150 24 3 4.5 8-23
150 480 255 300 250 218 204 30 3 4.5 8-25
200 600 305 375 320 282 260 38 3 4.5 12-30

 

 

 


  • Previous:
  • Next:

  • 
    WhatsApp Online Chat !