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Fakai Valve Factory Site: Yongxing Industrial Zone, Longwan District, Wenzhou City Tel: 0577-88767789
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HD741X Hydraulic Control Check Valve

HD741X Hydraulic Control Check Valve Structure
HD741X Hydraulic Control Check Valve Structure

Scope of application

HD741X hydraulic control check butterfly valve is suitable for the pump outlet pipe with medium as water. As a closed circuit and check valve, it is used to prevent and reduce the medium from flowing back in the pipe system and generating excessive water hammer to protect the pipe system. Its function is to replace one valve with two valves (the traditional pipeline design uses a gate valve with a check valve or an ordinary butterfly valve with a check valve).

Structural features

1.The control part adopts the full hydraulic control form. The accumulator takes the weight part, which reduces the energy loss, the transmission mechanism is simplified, the occupied space is small, similar to the general butterfly valve, and it is easy to install. Right-horizontal installation or vertical installation.
2. This valve can be used to replace two valves of gate valve (butterfly valve) and check valve after being installed in the water pump, and the flow resistance coefficient is small. Therefore, these valves are energy-saving products.
3. When the valve is closed, the time and switching angle of the fast and slow closing sections can be adjusted according to the characteristics of the pipeline system or user requirements, so as to eliminate or reduce water hammer and protect the system.
4. If all the travel switches use inductive proximity switches, remove the hydraulic station, and the protection level can reach IP67.

Technical Parameters

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 Strength test 0.375 0.9 1.5 2.4 3.75
Seal test 0.275 0.66 1.1 1.76 2.75

Applicable medium

water

Applicable temperature (℃)

≤80 ℃

Medium flow rate

3m / s

Part material

Part Name material
Valve body, butterfly plate Gray cast iron, ductile cast iron, carbon steel
Valve shaft stainless steel
Sealing ring Stainless steel, NBR
filler NBR

Implementation standards

Manufacturing Standards JB / TB527-97, GB / T 12238-89
Flange standard GB / T 17241. 6-1998, GB2555-2556-81
Structure length standard GB12221-89
Inspection standards GB / T 13927-92

Dimension table

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