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WESDOM

Butterfly buffer check valve

Butterfly buffer check valve

Nominal pass through: 40~1400mm

Nominal pressure: 1.0~2.5MPa

Applicable medium: water, oil, sewage, seawater

Applicable temperature: 0~80℃ (up to 200℃ if necessary)

Flange standard: GB/T 17241.6 GB/T 9113

Test standard: GB/T 13927 AP1598

Butterfly buffer check valve product overview:

The check valve produced by our factory is mainly used at the pump outlet of industrial water supply and sewage treatment plant to prevent the backflow of the medium in the pipe network. Destructive water hammer is automatically eliminated so that pumps and piping are not damaged. The valve is mainly characterized by valve body, cutting flap and good buffer performance. It is the best product for industrial water and urban sewage.

Product details

Butterfly buffer check valves are used on the outlet of the water pump of industrial water supply and sludge treatment plant to prevent the medium inside the pipe network from going back, and remove automatically the destructive water hammer so as to ensure both pump and pipeline not to get damaged. It consists of body, disc, buffer and micro-adjusting valve. And it features by the brand new structure, small volume, small fluid resistance, reliable seal, wearable and good buffering performance. It is really the best product for industrial use of water and city sludge drainage.

Pressure

(MPa)

DN(mm) L D D1 D2 b Z- d B1 B2 H
 

 

 

 

 

1.6

500 350 705 650 608 46 20-34 900 1000 980
600 390 840 770 718 54 20-41 1090 1250 1070
700 430 910 840 788 54 24-41 1200 1360 1220
800 470 1020 950 898 54 24-41 1320 1480 1320
900 510 1120 1050 998 54 28-41 1420 1580 1430
1000 550 1255 1170 1110 60 28-48 1550 1700 1550
1200 630 1485 1390 1325 66 32-54 1780 1950 1800
1400 710 1685 1590 1525 72 36-54 2000 2175 1980
1600 790 1930 1820 1750 78 40-58 2250 2470 2150
 

 

 

 

 

 

 

 

 

 

 

2.5

100 190 230 190 160 24 8-23 280 280 380
125 200 270 220 188 28 8-25 310 310 440
150 210 300 250 218 30 8-25 370 370 490
200 230 360 310 278 34 12-25 540 600 550
250 250 425 370 332 36 12-30 600 700 630
300 270 485 430 390 40 16-30 650 740 690
350 290 550 490 448 44 16-34 710 800 780
400 310 610 550 505 48 16-34 770 870 860
450 330 660 600 555 50 20-34 830 920 910
500 350 730 660 610 52 20-41 900 1000 980
600 390 840 770 718 56 20-41 1090 1250 1070
700 430 955 875 815 60 24-48 1200 1360 1220
800 470 1070 990 930 64 24-48 1320 1480 1320
900 510 1180 1090 1025 66 28-54 1420 1580 1430
1000 550 1305 1210 1140 68 28-58 1550 1700 1550
1200 630 1525 1420 1350 72 32-58 1780 1950 1800
1400 710 1750 1640 1560 78 36-65 2000 2175 1980

 

wesdom gate valve

Project case

Project description:

WESDOM customizes the most suitable solutions for customers according to the actual needs of customers’ working conditions;

Client feedback:

WESDOM products are of high quality, Now all products have well installed on site.

Project pictures:

Certificate

 

wesdom gate valve

Material

Part Name Valve body Valve disc Valve stem Filler Sealing ring
Material Grey cast iron,

Cast steel

Grey cast iron,

Cast steel,

Ductile iron

Stainless steel PTFE Nitrile rubber

Working principle and debugging

Check valve is mainly composed of valve body, butterfly plate, regulating valve, and buffer cylinder. Buffer cylinder is also composed of two oil chambers, connected internally by a one-way valve, and externally connected by a regulating valve. When the valve is opened, the medium water pushes the butterfly plate.

At this time, the hydraulic oil in the buffer cylinder quickly flows from cavity 1 to cavity 2 through the check valve inside. When the valve is closed, the medium returns to the first cavity.

Due to the large impact force of the counterweight and the high pressure wave, the valve flap is mostly closed, and the oil in the second cavity is compressed at the same time. Normal opening of the regulating valve is only 1/3. The high pressure oil compressed in the 2 cavity can only flow slowly into the 1 cavity through this 1/3 area, so that the valve flap is slowly closed and the pressure of the water hammer peak is weakened. Limits the generation of destructive water hammer.

Due to the function of the above-mentioned regulating valve, the time for the hydraulic oil to flow from cavity 2 back to cavity 1 can be adjusted by adjusting its opening. That is to adjust the closing speed of the valve. Therefore, when the opening degree of the regulating valve is smaller, closing speed of the corresponding valve is slower. Then longer the water discharge, the smaller the water hammer, and vice versa. Users can adjust appropriately according to the needs of the scene.

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