Check Valve Series

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Hydraulic Lift Check Valve

manufacturer: Shanghai Fengqi Industry Development Co., Ltd.
Eml: sales@fengqi.sh.cn

Tel: 86 (21) 3652 8716
Mob: (86) 138 1635 6498

product drawing

Hydraulic lift check valves
Hydraulic lift check valves

Usages

The valve is suitable for water medium, installed in the pump outlet, used to avoid and reduce the the pipe system medium bakflowpump outlet pipe on the road, as a closed-circuit, and and the check valve is used to prevent and reduce overlarged water hammer caused by the piping system backflow, to protect the pipe systems. And it can replace two valves(the traditional pipeline design is gate valve matched check valve or normal butterfly valve matched with check valve).

Features

1.The control part adopts full hydraulic type, using accumulator replaced the heavy hammer part, reducing the energy loss, and the transmission is simplified, the occupy space is small, approximately to normal butterfly valve. The installation is convenient, can be installed horizontally left and right, or vertically.
2.The valve is installed after the pump, can replace gate valve (butterfly vale ) and check valve. And the flow resistance coefficient is small, oversized butterfly valve flow resistance coefficient is only slightly higher than gate valve. Therefore, this valve is energy-saving product.
3.When HD7Q41X valve closed, the fast and slow segments times and switch angles can be regulated according to the characteristics of pipeline system or customer requests, so as to achieve the elimination or decrease of water hammer, and protect the system.
4.If all travel switches adopt inductive proximity switches, to remove the hydraulic station, the protection class is up to IP67.

Dimensions & constructral diagram

Hydraulic lift check valve constructral diagram
Hydraulic lift check valve constructral diagram

Main technical parameter

nominal diameter(mm) 1400-2400 1200-2400 500-2400 500-2400 500-1600
nominal pressure(MPa) 0.25 0.6 1.0 1.6 2.5
test pressure intensity test 0.375 0.9 1.5 2.4 3.75
sealing test 0.275 0.66 1.1 1.76 2.75
applicable medium water
suitable temperature(℃) ≤80℃
medium flow speed 3m/s

The materials of main parts

part name materials
body,disc grey cast iron,ductile cast iron,carbon steel
shaft SS
sealing ring SS, NBR
packing NBR

Implement standard

design standard JB/TB527-97、GB/T 12238-89
flange standard GB/T 17241。6-1998、GB2555-2556-81
face to face dimension GB12221-89
test standard GB/T 13927-92

Main external and connection dimensions

DN PN D D1 B L A B H
500 1.0 670 620 43 229 720 1650 1360
600 1.0 780 725 48 267 720 1730 1390
700 1.0 895 840 54 392 720 1800 1445
800 1.0 1015 950 58 318 720 1870 1485
900 1.0 1115 1050 61 330 720 2070 1865
1000 1.0 1230 1160 67 410 755 2165 1930
1200 1.0 1455 1380 65 470 905 2265 2030
1400 1.0 1675 1590 68 530 905 2665 2270
1200 0.6 1405 1340 65 470 755 2365 2025
1400 0.6 1630 1560 68 530 755 2665 2270
1600 0.6/0.25 1830 1760 68 600 905 2940 2380
1800 0.6/0.25 2045 1970 70 670 905 3325 2470
2000 0.25 2265 2180 54 760 905 3660 2370
2200 0.25 2475 2390 60 840 1123 4325 2940
2400 0.25 2685 2600 62 910 1123 4530 3000
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