Definition: A gate valve with a jacket insulation layer or external insulation structure, which maintains the temperature of the medium inside the valve by circulating steam, thermal oil, or wrapping insulation materials (such as aluminum silicate fibers) to prevent solidification or crystallization.
Characteristics:
Jacket design: A jacket layer is installed on the outside of the valve body, which can be filled with heat medium or insulation material to reduce heat loss;
Wide temperature resistance range: suitable for working conditions from -196 ℃ to+600 ℃, mostly made of carbon steel and stainless steel, resistant to high temperature and corrosion;
Anti medium solidification: Ensure the fluidity of high viscosity media (such as asphalt and heavy oil) in low temperature environments to avoid valve blockage;
Compact structure: flange connection, integrated design of insulation layer and valve body, convenient for pipeline installation and maintenance.
Application: Pipeline systems that require constant temperature or anti solidification in industries such as petrochemicals, asphalt transportation, and pharmaceuticals.






Valve body and valve cover | Valve plate, Valve seat | Valve Stem | Stem Nut | Filler | Handwheel |
carbon steel | High quality carbon steel+hard alloy or stainless steel | chromium stainless steel | ZQAL9-4 Aluminum Bronze | flexible graphite | malleable cast iron |
Chromium nickel titanium steel | Stainless steel+hard alloy | Chromium nickel titanium stainless steel | ZQAL9-4 Aluminum Bronze | Immersed in polytetrafluoroethylene | malleable cast iron |
Ci Ni Mo Ti Steel | Stainless steel+hard alloy | Chromium nickel molybdenum titanium stainless steel | ZQAL9-4 Aluminum Bronze | Asbestos packing | malleable cast iron |
chromium-molybdenum steel | Alloy steel+hard alloy | Chromium molybdenum aluminum steel | ZQAL9-4 Aluminum Bronze | flexible graphite | malleable cast iron |

Nominal Diameter DN(mm) | Main external dimensions and connection dimensions (mm) | ||||||||
L | L1 | D | D1 | D2 | b | Z-Φd | H | D0 | |
PN1.6MPa | |||||||||
40 | 200 | 70 | 160 | 125 | 100 | 18 | 4-18 | 310 | 200 |
50 | 250 | 80 | 180 | 145 | 120 | 18 | 4-18 | 358 | 240 |
65 | 270 | 90 | 195 | 160 | 135 | 20 | 8-18 | 373 | 240 |
80 | 280 | 100 | 215 | 180 | 155 | 20 | 8-18 | 435 | 280 |
100 | 300 | 100 | 245 | 210 | 185 | 22 | 8-18 | 500 | 300 |
125 | 325 | 110 | 280 | 240 | 210 | 24 | 8-23 | 614 | 320 |
150 | 350 | 120 | 335 | 295 | 265 | 26 | 12-23 | 674 | 360 |
200 | 400 | 130 | 405 | 355 | 320 | 30 | 12-25 | 818 | 400 |
250 | 450 | 140 | 460 | 410 | 375 | 30 | 12-25 | 969 | 450 |
300 | 500 | 160 | 520 | 470 | 435 | 34 | 16-25 | 1145 | 560 |
PN2.5MPa | |||||||||
40 | 200 | 70 | 160 | 125 | 100 | 20 | 4-18 | 358 | 240 |
50 | 250 | 80 | 180 | 145 | 120 | 22 | 8-18 | 373 | 240 |
65 | 270 | 90 | 195 | 160 | 135 | 22 | 8-18 | 435 | 280 |
80 | 280 | 100 | 230 | 190 | 160 | 24 | 8-18 | 500 | 300 |
100 | 300 | 100 | 270 | 220 | 188 | 28 | 8-15 | 614 | 320 |
125 | 325 | 110 | 300 | 250 | 218 | 30 | 8-25 | 670 | 360 |
150 | 350 | 120 | 360 | 310 | 278 | 34 | 12-25 | 818 | 400 |
200 | 400 | 130 | 425 | 370 | 332 | 36 | 12-30 | 969 | 450 |
250 | 450 | 140 | 485 | 430 | 390 | 40 | 12-30 | 1145 | 560 |
300 | 500 | 160 | 550 | 490 | 448 | 44 | 16-34 | 1145 | 640 |
Note: The pressure range is 1.6MPa~16.0MPa. The above data is for reference only. Please consult the company's sales department for details.
Oil and gas transportation involves multiple modes such as pipelines and ships, and is the core link of the energy supply chain.

The control of chemical raw materials covers the entire process of mining, storage, and production, ensuring safety and process stability.

High temperature steam pipelines are the core of energy transmission in power systems, supporting the efficient operation of thermal and nuclear power plants.

Valves control fluids in multiple industries such as new energy and electronics, ensuring safe and efficient production.


