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Electric Cast Circulation Heaters

Durex Industries' cast circulation heaters are compact, electric in-line solutions engineered for fast and reliable heating of liquids and gases. Featuring a cast-in aluminum heat exchanger, these heaters deliver indirect fluid heating—creating a clean, controlled thermal environment ideal for sensitive applications.

This indirect design helps prevent thermal degradation of oils and viscous fluids, a common issue with direct immersion heating, while also protecting heating elements from corrosive exposure.

Thanks to aluminum’s superior thermal conductivity, cast circulation heaters offer:

• Rapid thermal response
• Precise temperature control
• Long-lasting performance

DFX Cast Circulation Heaters for Fast Thermal Response

Key Design Features

• Low-Mass Design - Enables rapid thermal response & enhances temperature controllability
• Seamless 316SS Flow Tubing - Ensures contamination-free operation, prevents internal leaks, rated up to 3,000 psi
• Cast Aluminum Heat Exchange Body - Provides indirect heating for fluids, delivers rugged durable performance & extends heater lifespan
• Dual Fluid Path Capability - Supports precise heat/cool control & accommodates higher flow rates
• UL® Recognition & Certified Ex-Enclosures - Suitable for lab and industrial environments & Compliant with North American and European HazLoc standards

Cast-in Circulation Heater Options

• Heat/Cool configuration
• Process and high-limit temperature sensors
• Thermostats for direct or pilot duty control
• Replaceable high-limit thermal cutoff device
• Electrical enclosures rated NEMA 4, 7, NEC Class 1 Div 2, or ATEX
• Passivated and electro-polished wetted surfaces
• Insulated body for operation up to 200°C (392°F)
• Stand-off electrical enclosure
• Custom modifications available upon request

Contact Durex Industries to learn how our cast circulation heaters can be tailored to your system requirements.