Usually there are trapezoidal threads on the lifting rod. Through the nut at the top of the valve and the guide groove on the valve body, the rotary motion is changed into linear motion, that is to say, the operating torque is changed into the operating thrust. When opening the valve, when the gate lifting height is equal to 1:1 times the valve diameter, the flow passage is completely open, but when running, this position can not be monitored. In practical use, the vertex of the valve stem is used as the sign, that is, the position of the valve stem that is not moving is used as its full open position. In order to consider the locking phenomenon of temperature change, the valve is usually opened to the vertex position and reversed to 1/2-1 turn as the position of the fully open valve. Therefore, the full open position of the valve is determined by the position of the gate (i.e. stroke).
Product characteristics:
1. Flat-bottomed seat, no accumulation of dirt, make the seal more reliable.
2. The valve disc is encapsulated with NBR as a whole. The inner parts of the valve are made of corrosion-resistant stainless steel and copper alloy, which can be used for sewage system to adapt to harsh working conditions.
3. Small size, light weight, easy to install and maintain
4. The valve stem is sealed with three O-rings, which greatly reduces the friction resistance of the switch and makes the switch light and water-tight.
Major Component Materials
name |
Texture of material |
valve body |
Ductile iron |
Valve plate |
Ethylene propylene rubber |
Nut |
brass |
Bolt |
SS201 |
Bonnet |
Ductile iron |
Opposite open loop |
brass |
Type O circle |
Ethylene propylene rubber |
Stem |
20Cr13 |
Top cover |
Ductile iron |
handwheel |
Ductile iron |
Dust cover |
Ethylene propylene rubber |
Main Dimensions Table
DN(mm) | D | D1 | D2 | L | H | N-ød | b | |||||||||||
10 | 16 | 25 | 10 | 16 | 25 | 10 | 16 | F4 | 5163 | F5 | 10 | 16 | 25 | 10 | 16 | 25 | ||
40 | 150 | 150 | 150 | 110 | 110 | 110 | 84 | 84 | 140 | 165 | 240 | 184 | 4-19 | 4-19 | 4-19 | 18 | 18 | 18 |
50 | 165 | 165 | 165 | 125 | 125 | 125 | 99 | 99 | 150 | 178 | 250 | 235 | 4-19 | 4-19 | 4-19 | 19 | 19 | 19 |
65 | 185 | 185 | 185 | 145 | 145 | 145 | 118 | 118 | 170 | 190 | 270 | 265 | 4-19 | 4-19 | 8-19 | 19 | 19 | 19 |
80 | 200 | 200 | 200 | 160 | 160 | 160 | 132 | 132 | 180 | 203 | 280 | 290 | 8-19 | 8-19 | 8-19 | 18-19 | 18-19 | 18-19 |
100 | 220 | 220 | 235 | 180 | 180 | 190 | 156 | 156 | 190 | 229 | 300 | 320 | 8-19 | 8-19 | 8-22 | 18-19 | 18-19 | 18-19 |
125 | 250 | 250 | 270 | 210 | 210 | 220 | 184 | 184 | 200 | 254 | 325 | 380 | 8-19 | 8-19 | 8-26 | 18 | 18 | 24 |
150 | 285 | 285 | 300 | 240 | 240 | 250 | 210 | 210 | 210 | 267 | 350 | 460 | 8-23 | 8-23 | 8-26 | 19 | 19 | 24 |
200 | 340 | 340 | 360 | 295 | 295 | 310 | 266 | 266 | 230 | 292 | 400 | 520 | 8-23 | 12-23 | 12-26 | 20 | 20 | 24 |
250 | 405 | 405 | 425 | 350 | 355 | 370 | 319 | 319 | 250 | 330 | 450 | 630 | 12-23 | 12-28 | 12-30 | 22 | 22 | 27 |
300 | 460 | 460 | 485 | 400 | 410 | 430 | 370 | 370 | 270 | 356 | 500 | 720 | 12-23 | 12-28 | 16-30 | 24 | 22 | 30 |
350 | 520 | 520 | 555 | 460 | 470 | 490 | 429 | 429 | 290 | 381 | 550 | 800 | 16-23 | 16-28 | 16-33 | 25 | 25 | 33 |
400 | 580 | 580 | 620 | 515 | 525 | 550 | 480 | 480 | 310 | 406 | 600 | 850 | 16-28 | 16-31 | 16-36 | 28 | 28 | - |
450 | 640 | 640 | - | 565 | 585 | 548 | 548 | 330 | 432 | 650 | 1000 | 20-28 | 20-31 | - | 29 | 29 | - | |
500 | 715 | 715 | - | 620 | 650 | 609 | 609 | 350 | 457 | 700 | 1200 | 20-28 | 20-34 | - | 31 | 31 | - | |
600 | 840 | 840 | - | 725 | 770 | 720 | 720 | 390 | 508 | 800 | 1350 | 20-31 | 20-28 | - | 33 | 33 | - | |
700 | 895 | 910 | - | 840 | 840 | 800 | 800 | 430 | 610 | - | 1390 | 24-30 | 24-36 | - | 32 | 32 | - | |
800 | 1015 | 1025 | - | 950 | 950 | 900 | 900 | 470 | 660 | - | 1520 | 24-34 | 24-40 | - | 35 | 35 | - | |
900 | 1115 | 1125 | - | 1050 | 1050 | 1000 | 1000 | 510 | 711 | - | 2090 | 28-34 | 28-40 | - | 36 | 36 | - | |
1000 | 1230 | 1255 | - | 1160 | 1170 | 1112 | 1112 | 550 | 811 | - | 1980 | 28-37 | 28-43 | - | 40 | 40 | - |



Qualification certificate







American LIKE valves is a global supplier of flow control products,solution and services with a diverse range of products, for infrastructure and industrial fluid control. Our solution is an integral key part of the pipeline management solution, adopting advanced mechanical technology and automation system, so that the products always maintain excellent quality, and responding to customer needs correctly and fast. LIKE valve's customers and markets cover water supply and drainage, water treatment, heating, construction, fire fighting, HVAC systems, power plants, petrochemical, natural gas pipelines, ships and other fields.
LIKE valves always adhere to the quality policy of "quality is the life of products, products are the life of LIKE", have been passed ISO9001, ISO14001, OHSAS18001, TS, API, CE, ROHS,CCC certificate of professional testing institutions. We take customer satisfaction as the purpose, take our mission to realize the value by supply excellent service to our customers, strive to do even better on each product, each service, to provide continuous guarantee for customers all over the world.
In 2016, LIKE valve products entered Chinese market. In 2017, LIKE Valve was registered Like Valves (Tianjin) Co., LTD. in China, a joint venture of the United States and China, dedicated to serving customers in the Asia-Pacific region and China.
LIKE valve adhering to the concept of "integrity, innovation, cooperation and mutual benefit", building our brand with product quality and customer satisfaction; improving and surpass ourselves with unremitting pursuit and sustainable development. "LIKE Dream" will contribution to "China Dream" more wonderful!

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