Overview
The Watlow FOC715J11-21 tubular flange immersion heater is a precision heating assembly built for demanding industrial process applications. Watlow flange heaters are engineered for heating liquids, gases, and thermal transfer fluids in tanks and pressure vessels, making them essential components in chemical processing, plastics manufacturing, food service, and petrochemical industries. The standard configuration ensures straightforward installation and integration into existing thermal management systems.
Key Features
- Watlow WATROD tubular elements for consistent heat distribution
- ANSI flange mounting for standardized tank and vessel integration
- Available with general-purpose or moisture-resistant terminal enclosures
- Suitable for both liquid and gas heating applications
- Easy installation and maintenance design
- CSA/UL certification options available for hazardous environments
Technical Specifications
Refer to Watlow’s official specification sheet for complete electrical, dimensional, and thermal performance data specific to this assembly. Key parameters include voltage rating, wattage output, flange size and class, sheath material composition, operating temperature range, and pressure rating. Contact Watlow or an authorized distributor for detailed technical documentation.
Typical Applications
- Heat transfer fluid circulation systems
- Oil and water heating in industrial tanks
- Pressure vessel thermal conditioning
- Process heating in manufacturing and chemical plants
- Temperature maintenance in storage and supply systems
Compatibility & Replacements
Compatible With
- ANSI-standard flanged tanks and pressure vessels (3″ through 14″ flange sizes)
- Watlow temperature and power controllers
- Type J and Type K thermocouple sensor inputs
- Single-pole and double-pole thermostat configurations
- Explosion-proof enclosure environments (CSA File 61707)
Replaces / Drop-In Replacement For
For verified replacement models and compatibility with legacy systems, consult Watlow’s product documentation or contact an authorized distributor. Watlow’s Visual Designer tool on Watlow.com allows custom configuration and cross-reference verification.
Works With
- Watlow SELECTâ„¢ platform for online configuration and ordering
- Watlow temperature control systems and power regulators
- Standard industrial PLC and automation control networks
- Thermostat and sensor integration for automated temperature management










