Overview
Jacket insulated globe valves are critical components in process industries where precise temperature maintenance of pipeline contents is required. Unlike standard globe valves, these incorporate an integrated jacket surrounding the valve body that circulates steam, thermal oil, or other heating/cooling media. Originally developed for asphalt and heavy crude oil applications in the mid-20th century, modern versions now serve pharmaceutical sterilization processes, chocolate manufacturing, and LNG transfer systems. Their design follows ASME B16.34 standards with typical pressure classes ranging from 150# to 900#.
Structure and Working Principle
The valve consists of three primary components: the main valve body with disc/seat mechanism, the external jacket chamber, and the thermal fluid inlet/outlet connections. When closed, the disc creates a positive shut-off perpendicular to the flow path, while the jacket maintains uniform temperature. Thermal fluid enters through the lower jacket port and exits through the upper port, ensuring complete envelope coverage. Advanced designs may include spiral baffles inside the jacket for improved heat transfer efficiency. The stem sealing system typically uses flexible graphite packing rated for -200°C to 650°C operation.
Key Features
1) Dual-Pressure Containment: Separate pressure ratings for main flow path (PN16-PN100) and jacket circuit (usually PN6-PN25). 2) Extended Bonnet: Standard on cryogenic models to keep stem packing at ambient temperature. 3) Anti-Static Design: Some models incorporate grounding brushes for flammable media. Manufacturers offer customized jacket configurations including half-jacket (covering only valve body) or full-jacket (extending to bonnet). Specialized versions may have PTFE-lined jackets for corrosive thermal fluids or vacuum-insulated designs for ultra-low temperature applications.
Application Areas
Petrochemical: Prevents wax deposition in crude oil pipelines. Food Processing: Maintains viscosity in chocolate/syrup transfer lines. Pharmaceuticals: Ensures sterile conditions in CIP/SIP systems. These valves are particularly crucial for sulfur handling (melting point 115°C) and fatty acid processing where temperature deviations cause solidification. In cryogenics, they prevent ice formation during liquid nitrogen/oxygen transfer. Recent adoption is growing in concentrated solar power plants for thermal oil control.
Maintenance and Precautions
Quarterly inspections should verify: 1) Jacket circuit integrity via hydrostatic testing 2) No thermal fluid leakage at jacket welds 3) Proper stem lubrication. Always isolate and depressurize both main valve and jacket before maintenance. Common failure modes include jacket clogging from thermal fluid degradation (especially in steam systems) and thermal stress cracking at weld joints. For steam jackets, install condensate traps to prevent water hammer. During winter shutdowns, completely drain jackets to avoid freeze damage.
B2B Procurement Guide
Technical specifications should clearly define: 1) Jacket design pressure/temperature 2) Required heat transfer coefficient 3) Connection standards (jacket ports often use NPT threads while main flanges follow ANSI/ASME). Leading manufacturers include Velan, Parker, and Spirax Sarco. For batch processes, consider valves with quick-connect jacket couplings. Always request material test certificates for both valve body and jacket components. Lead times typically range 8-16 weeks for custom configurations.
Related Manufacturers
- 主营：[]
- 主营：[]
- 主营：鸭嘴阀
- 主营：刚性防水套管、电气组合套管、柔性防水套管、截止阀、钢制伸缩器、法兰蝶阀、人防密闭套管、电动气动阀门、法兰软密封闸阀、可调式减压阀、集分水器、止回阀、过滤器、阻尼减震器、排泥阀、过轨管、止水环、通气帽、黄铜阀门、法兰弯头、波纹补偿器、橡胶接头、排气阀
- 主营：螺旋输送机、斗式提升机、刮板输送机、粉尘加湿机、通风蝶阀、无轴螺旋输送机、管式螺旋输送机、插板阀、星型卸料器
- 主营：蝶阀、球阀、止回阀、夹套保温截止阀、闸阀、减压阀、安全阀、水利控制阀、气动阀门、电动阀门
- 主营：球阀、蝶阀、闸阀、截止阀、止回阀、电磁阀、排气阀
- 主营：放料阀、梭阀、减压阀、截止阀、呼吸阀、阻火器、调节阀、水利控制阀、排气阀、排泥阀、球阀、闸阀、止回阀、蝶阀、隔膜阀、过滤器、疏水阀、刀闸阀、泄压阀、电磁阀、盲板阀、角座阀
- 主营：保温截止阀、球阀、清管阀、蝶阀
- 主营：调节阀、气动钟阀、气动梭阀、衬氟截止阀、波纹管截止阀、渠道闸门、电动盲板阀、水泵控制阀、排渣止回阀、消声止回阀、手动刀闸阀、蒸汽电磁阀、两位三通阀、圆形插板阀、电磁流量计、蒸汽疏水阀、气动陶瓷球阀、防盗锁闭球阀、双密封导轨阀、气动高压球阀、电动煤气闸阀、大口径刀闸阀、美标铸钢闸阀、卧立两用止回阀、燃气紧急切断阀
- 主营：夹套保温截止阀、闸阀
- 主营：切断阀、排污阀、电动阀、截止阀、保温阀、电磁阀、止回阀、柱塞阀、手动刀、泄爆发、排气阀、调节阀、旋塞阀、刀闸阀、气动刀、持压阀、安全阀、排灰阀、管力阀、液动角、直通篮、料浆阀、扩浆阀、对夹蝶、排污泵
- 主营：进口球阀、进口减压阀、进口蝶阀、进口截止阀、进口电磁阀、进口隔膜阀、进口钢瓶减压阀、进口刀闸阀、进口闸阀、进口针型阀、进口调节阀、进口角座阀、进口疏水阀、进口安全阀、进口止回阀、进口阻火器、进口过滤器、进口流量计、进口多级泵、进口离心泵、进口隔膜泵、进口计量泵、进口转子泵、进口真空泵、进口屏蔽泵
- 主营：电磁阀、调节阀、切断阀、截止阀、圆顶阀、废气阀、刀闸阀、鸭嘴阀、球阀、蝶阀、蒸汽压力控制阀、止回阀、闸阀、管道式气动阀、电动滑板阀、安全阀
- 主营：阀门、电动调节阀、气动调节阀、截止阀、自力式调节阀、氮封阀、蝶阀、球阀、闸阀、止回阀、阀门配件
- 主营：泄爆阀、迷你阀、节流阀、截止阀、电磁阀、减压阀、矿浆阀、止回阀、泄压阀、排气阀、调节阀、氮封阀、过滤器、高温球阀、电动闸阀、平板闸阀、衬氟球阀、暗杆闸阀、气动球阀、塑料球阀、水泵控制阀、压差控制阀、高真空蝶阀、真空破坏阀、气动隔膜泵
- 主营：抽气止回阀、自动循环阀、电站阀、截止阀、管道气动阀、空排止回阀、调节阀、自控三通回流阀、陶瓷阀、衬氟阀门、电磁阀、切断阀、排气阀、水力控制阀、气动阀、电动阀、闸阀、止回阀、球阀、蝶阀、柱塞阀、旋塞阀、泄压阀、平衡阀、安全阀
- 主营：刀闸阀、排气阀、蝶阀、直流式保温截止阀、球阀、调节阀、流量控制阀、止回阀、闸阀、气动阀门、电动阀门
- 主营：工业阀门、管道在线取样阀、抽汽止回阀、不锈钢夹套保温截止阀、固定动态流量平衡阀、拉断阀、泵保护阀、梭阀、调节阀
- 主营：自动回流阀、抽气止回阀、衬氟安全阀、直流式夹套保温截止阀、梭式泄压阀、气阀式止回阀、气动梭阀、定压止回阀、清管阀、组合式三通球阀、斜杆放料球阀、风包释压阀