Magnetic Level Gauge Steam/Hot Water/Vacuum Jacket Type

• Three Jacket Configurations for Temperature-Sensitive Media

Steam jacket, hot water jacket and vacuum jacket are available to match different working requirements. Steam and hot water jackets provide continuous tracing (max jacket pressure 10 bar) to prevent crystallization, solidification and viscosity increase of high-melting-point media; vacuum jacket offers thermal insulation for cryogenic liquids to avoid wall condensation and frosting, ensuring uninterrupted level measurement.

• Flexible Single & Multi-section Range Design

Single-section measuring length reaches up to 5500 mm; for tanks deeper than 5500 mm, 2-section or multi-section spliced structures are available. The vertical bypass chamber adopts Φ57 mm or Φ60.3 mm pipe diameter with welding stud or necking welding process, ensuring structural strength and smooth float movement.

• Wide Pressure & Temperature Adaptation for Harsh Processes

Rated working pressure ranges from 16 bar to 250 bar, and operating temperature covers -40°C to +400°C, adapting to high-temperature heat transfer oil, medium-pressure process vessels and low-temperature cryogenic storage conditions. Display components are graded by temperature: PA magnetic flaps for up to 120°C, aluminum indication rail and columns for up to 400°C.

• Reliable Level & Interface Dual Measurement

Operating on the communicating vessel + magnetic float coupling principle, it supports both single liquid level and liquid-liquid interface measurement. It requires minimum medium density of 0.4 kg/dm³ for level detection, and minimum density difference of 0.2 kg/dm³ for interface measurement. Cylindrical sealed floats in 316L or titanium are customized according to actual medium density.

• Complete Connection Options & Customizable Configurations

Process connections cover full-specification flanges (DN15–DN50, PN16–PN320 / Class 150–Class 1500) and welding/threaded studs. Standard R½" plug vent and drain connections can be upgraded with valves on request. Jacket ports are available in DN15/DN20 PN16 flanges or NPT1/2 / G1/2" threaded studs for easy integration with on-site tracing systems.

• Graded Material Matching for Sealing Reliability

Main pipe is available in 304, 316L stainless steel or custom alloys, with flange material consistent with the pipe body. Gaskets are selected by temperature grade: PTFE for temperatures up to 200°C, and metal graphite for temperatures up to 400°C. Carbon steel or stainless steel bolts and nuts are provided accordingly to ensure long-term sealing under high pressure and temperature cycles.

• Power-free Visual Indication & Lifelong Maintenance-free

The magnetic flap/column display delivers clear continuous local readings driven purely by mechanical magnetic coupling, requiring no external power supply and remaining fully functional during power outages. With no internal wearing parts and fully isolated display from process media, it operates stably for long periods with only routine appearance inspection, greatly reducing on-site maintenance costs.

This steam/hot water/vacuum jacketed magnetic level gauge operates on the communicating vessel principle with magnetic float coupling, delivering power-free local visual level indication. Its integrated external jacket structure provides active heating or passive thermal insulation, specifically engineered for temperature-sensitive process media that easily crystallize, solidify, thicken or frost at ambient temperatures. It fills the measurement gap where standard bypass level gauges fail due to medium state changes, and is widely deployed in the following targeted industrial scenarios:

1. Petrochemical High-Viscosity & Easily Crystallized Medium Storage Tanks

Ideal for storage tanks and bypass pipelines carrying heavy oil, asphalt, paraffin, molten sulfur and other high-melting-point media. The steam jacket provides continuous tracing at up to 10 bar jacket pressure, preventing medium crystallization and solidification inside the bypass chamber to avoid float jamming and measurement failure. It supports both single liquid level and oil-water interface measurement, with a minimum medium density of 0.4 kg/dm³ and a required density difference ≥ 0.2 kg/dm³ for interface detection. Rated for working pressures up to 250 bar and temperatures up to 400°C, with 316L or titanium float options for corrosive heavy process media.

2. Cryogenic Storage & Low-Temperature Chemical Process Systems

Specially suited for cryogenic liquid storage tanks and low-temperature solvent process lines such as liquid ammonia, cryogenic reagents and liquefied industrial gases. The vacuum jacket forms an isolated thermal insulation layer between the process chamber and the external environment, preventing wall frosting, condensate accumulation and medium vaporization caused by ambient temperature differences. It operates reliably at temperatures as low as -40°C, with aluminum indication rails and flaps adapted to wide temperature cycles. Its fully mechanical power-free design eliminates electrical ignition risks, making it suitable for hazardous area cryogenic storage zones.

3. Pharmaceutical & Food Hot-Melt Material Process Vessels

Applied to preparation tanks and storage vessels for hot-melt adhesives, pharmaceutical greases, food-grade syrups and chocolate slurries. The hot water jacket delivers mild and uniform circulating heating, avoiding local overheating and material deterioration caused by direct high-temperature tracing. Wetted parts in 304/316L stainless steel match sanitary process requirements, and PTFE gaskets are standard for working temperatures up to 200°C. Clear distant-visible magnetic flap indication allows operators to read levels safely without approaching high-temperature vessels.

4. Heavy Oil Settling & Oil-Water Separation Tanks

Deployed in oilfield and petrochemical heavy oil settling tanks and three-phase separators. Steam tracing maintains fluidity of heavy crude oil and viscous oily media inside the bypass chamber, ensuring the float moves smoothly with level fluctuations. It simultaneously monitors total liquid level and oil-water interface to support separation process control, with multi-section spliced structures available for large settling tanks exceeding 5500 mm in height. Full-range flange connections (Class 150 to Class 1500) fit high-pressure separation vessels directly.

5. Outdoor Cold-Region Storage Tanks & Skid-Mounted Units

Designed for outdoor process tanks and skid-mounted equipment in cold regions where winter temperatures drop sharply. Steam or hot water jacket tracing prevents medium freezing and congelation inside the bypass pipeline, guaranteeing uninterrupted level monitoring even at -40°C ambient temperature. Vertical bypass installation with flange, welding stud or threaded stud connections adapts to compact skid structures. Its wear-free magnetic coupling structure requires no routine maintenance, reducing on-site inspection workload for unattended outdoor stations.

6. Fine Chemical High-Melting-Point Reactor Bypass Systems

Used for bypass level monitoring of high-melting-point material reactors in fine chemical production. The jacket tracing system synchronizes with the reactor temperature control system, ensuring consistent medium state between the bypass chamber and the reactor body and eliminating measurement deviation caused by temperature difference. Process flanges from DN15 to DN50 with pressure ratings from PN16 to PN320 match various reactor nozzle specifications. Optional level alarm switches and remote transmitters can be mounted externally via magnetic coupling for interlock protection and DCS data upload without tank modification.

Our steam, hot water and vacuum jacketed bypass magnetic level gauges hold official ECM certification. This certificate verifies that the product complies with EU industrial equipment safety and performance standards, and maintains compliant and reliable performance under rated high-pressure and wide-temperature working conditions. It is fully applicable to international engineering projects, export procurement and industrial sites with strict regulatory requirements.