The jacketed ball valve is a key device that achieves medium temperature control by adding a jacket structure to the outer layer of the valve body. Its core uses are as follows:
1. Temperature control and medium protection
Insulation and anti-solidification
Steam or insulation medium (such as heat transfer oil) is injected through the jacket layer to maintain the fluidity of high-viscosity media (such as heavy oil and rubber) in the valve to prevent low-temperature solidification and blockage of the pipeline.
Typical scenarios: oil transportation, chemical colloid raw material processing.
Cold insulation and anti-frost
Cooling medium (such as liquid nitrogen) is injected into the jacket layer to prevent abnormal pressure caused by gasification of low-temperature media (such as liquid oxygen and liquefied natural gas), and to avoid frost on the outside of the valve body.
Case: liquefied natural gas storage and transportation, air separation equipment.
Two-way temperature control
The jacket layer medium can be switched according to the working conditions to achieve heating or cooling functions and adapt to the needs of medium temperature difference changes.
2. Special medium processing
High-viscosity medium transportation
Designed for high-viscosity media such as asphalt and resin that are easy to solidify at room temperature to ensure smooth transportation.
Corrosive/Crystallizing Media Compatible
Made of stainless steel or special alloy, resistant to acid, alkali, oxidizing media and crystalline particles.
Application Areas: Pharmaceutical Reactors, Chemical Wastewater Treatment.
3. Applicable industries and scenarios
| Industry | Applications |
|---|---|
| Petrochemical | Crude oil transportation, reactor temperature control, high-temperature steam pipeline |
| Pharmaceutical Food | Temperature stabilization for pharmaceutical synthesis and anti-coagulation system for food processing |
| Metallurgical Energy | Molten metal cooling, LNG storage and transportation to prevent gasification |
| Environmentally friendly treatment | High viscosity waste liquid transportation, waste gas treatment equipment insulation |
4. Structural advantages and performance parameters
Compact design
The wafer-type structure shortens the installation space and is 40%-60% lighter than the flange type, making it suitable for narrow areas.
Pressure-resistant seal
The jacket layer is welded with carbon steel, with a pressure resistance of more than 1.0MPa and a leakage level of ANSI VI zero leakage.
Material adaptation
Valve body: 304/316 stainless steel, LCB low-temperature steel
Jacket: carbon steel coating or corrosion-resistant alloy
Seal: reinforced PTFE, metal hard seal
5. Selection points
Jacket type: integral (high pressure), wafer (limited space) or two-piece (easy maintenance).
Media matching: For highly corrosive media, a duplex stainless steel valve body + Hastelloy jacket should be selected.
Drive mode: For high-frequency adjustment, select pneumatic/electric actuator, and the manual type is suitable for intermittent operation.
