Description
Wesdom gate valve is a gate plate of an opening and closing part. The movement direction of the gate plate is perpendicular to the direction of the fluid.
The gate valve can only be fully opened and fully closed, and cannot be adjusted or throttled. The gate valve is sealed by the contact of the valve seat and the gate plate. Usually, the sealing surface will be welded with metal materials to increase wear resistance, such as 1Cr13, STL6, stainless steel, etc. The gate has a rigid gate and an elastic gate. According to the different gate plates, the gate valve is divided into a rigid gate valve and an elastic gate valve.
Standards：
①Design and Manufacture Conform to AWWA, BS5163, DIN-F4,F5
②Dimensions Conform to EN1092-2,ANSI B16.5
③Face to Face dimensions Conform to EN558-1, API 594, DIN3202
④Testing Conform to EN12266-1, API598
| DN | L | d | C | x-n | T | f | g | |||
| 50 | 178 | 165 | 125 | 4-18 | 19 | 2 | 99 | |||
| 65 | 190 | 185 | 145 | 4-18 | 19 | 2 | 118 | |||
| 80 | 203 | 200 | 160 | 4-18 | 8-18 | 19 | 3 | 132 | ||
| 100 | 229 | 220 | 180 | 8-18 | 19 | 3 | 156 | |||
| 125 | 254 | 250 | 210 | 8-18 | 19 | 3 | 184 | |||
| 150 | 267 | 285 | 240 | 8-23 | 19 | 3 | 211 | |||
| 200 | 292 | 340 | 295 | 8-23 | 12-23 | 21 | 3 | 266 | ||
| 250 | 330 | 395 | 350 | 355 | 12-23 | 12-25 | 22 | 3 | 319 | |
| 300 | 355 | 445 | 400 | 410 | 12-23 | 12-25 | 25 | 4 | 370 | |
| 350 | 381 | 515 | 460 | 470 | 16-23 | 16-25 | 25 | 4 | 430 | |
| 400 | 405 | 580 | 515 | 525 | 16-26 | 16-31 | 28 | 4 | 475 | |
| 450 | 432 | 650 | 565 | 585 | 20-26 | 20-31 | 29 | 5 | 530 | |
| 500 | 457 | 670 | 715 | 620 | 650 | 20-26 | 20-34 | 29 | 5 | 580 |
| 600 | 508 | 780 | 810 | 725 | 770 | 20-30 | 20-36 | 38 | 5 | 680 |
Installation and precautions
Do not lift the handwheel during the transportation process, and do not allow collision. If it is stored for a long time, it should be placed in a cool and dry place, and it is not allowed to store or stack in the open air.
Pay attention to the following work when installing the valve:
(1) Wipe off the dirt attached to the valve;
(2) Check whether the operating conditions are consistent with the valve’s pressure resistance, temperature resistance, and corrosion resistance;
(3) Check whether the fasteners of each part of the valve are loose or damaged;
(4) Manually operated valves should be flexible and free from jamming
(5) The pipe flanges on both sides connected to the valve must be parallel and coaxial;
(6) When tightening flange bolts, tighten them symmetrically and alternately;
(7) This valve should be installed on the horizontal pipeline;
(8) If there are no special instructions in the order contract, only vertical installation and use are allowed, and the non-verticality shall not exceed 5°;
(9) When the handwheel rotates clockwise, it is the closing direction, and vice versa, it is the opening direction.
(10) For the new pipeline, the valve should be fully opened before watering;
(11) A certain number of expanders or expansion bends are installed on the pipeline;
(12) Large-caliber valves should have fulcrums.
After the valve is installed, the user can formulate a maintenance cycle according to the opening and closing frequency, and fill the actuator with lubricating grease on time according to the cycle regulations
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