Insulated Gate Valve

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.

  • Improvement in adaptability and safety
  • Sealing performance enhancement
  • Compact structure and convenient maintenance
  • Low flow resistance and anti-clogging design
  • Temperature resistance and corrosion resistance
  • Efficient insulation structure
Improvement in adaptability and safety
  • Improvement in adaptability and safety
    01
    Compatible with multiple driving modes including manual, electric, and pneumatic, suitable for different working conditions; The insulation layer delays the solidification time of the medium, provides emergency buffer for sudden heat shutdown, and reduces the risk of production accidents.
Sealing performance enhancement
  • Sealing performance enhancement
    01
    The gate adopts elastic sealing rings or hard alloy sealing surfaces, combined with three O-ring valve stem sealing designs, effectively preventing medium leakage and meeting the high sealing requirements of industries such as petrochemicals and pharmaceuticals.
Compact structure and convenient maintenance
  • Compact structure and easy maintenance
    01
    The jacket layer is welded together with the valve body flange, and the structural length is the same as that of a regular gate valve, occupying a small installation space; Support online replacement of seals without the need to shut down water or disassemble valves, reducing maintenance costs.
Low flow resistance and anti-clogging design
  • Low flow resistance and anti blocking design
    01
    Retaining the full bore flow characteristics of traditional gate valves, the flow direction of the medium is not restricted, and there is no pressure loss; The flat bottomed valve seat avoids the accumulation of debris and, combined with insulation function, further reduces the risk of high viscosity medium blockage.
Temperature resistance and corrosion resistance
  • Temperature resistance and corrosion resistance
    01
    The valve body material is mostly made of stainless steel, carbon steel or alloy, and the jacket layer is isolated from the medium flow channel. The temperature resistance range is up to -50 ℃ to+600 ℃, and the inner cavity is sprayed with epoxy resin coating, which is suitable for corrosive medium environments.
Efficient insulation structure
  • Efficient insulation structure
    01
    Adopting the outer jacket design of the valve body, precise temperature control can be achieved by circulating steam, thermal oil or filling insulation materials (such as aluminum silicate fibers), reducing heat loss of the medium, preventing solidification or crystallization of high viscosity media (asphalt, heavy oil, etc.), and ensuring fluidity.
Main Component Materials

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

Performance Specifications & Dimensions
  • Nominal pressure PN
    1.6/2.5/4.0/6.4/10.0/16.0
  • Shell F
    Px1.5
  • Sealing Pressure
    Px1.1
  • Medium
    Water, Steam, Oil
  • Temperature (℃)
    ≤200℃


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.

Valve Application
  • Oil & Gas Transportation

    Oil and gas transportation involves multiple modes such as pipelines and ships, and is the core link of the energy supply chain.

  • Chemical Raw Material Control

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

  • High Temperature SteamPipeline in Power System

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

  • Other Industries

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

Related Recommendations
Always Connect With Us.
24-hour online response, professional team to answer all your questions, Welcome to contact us to customize your exclusive solution.
WeChat
Scan the QR Code with WeChat