Industrial PTFE (Teflon®) Flanged Immersion Heaters

NPH PTFE (Teflon®) Flanged Immersion Heaters are engineered for heating highly corrosive acids, chemical solutions, plating baths and process liquids that would rapidly attack conventional metal sheath heaters. The heating elements are fully encapsulated within a heavy-wall PTFE fluoropolymer sheath, providing exceptional resistance to chemical attack while delivering efficient and reliable heat transfer directly into the process solution. PTFE immersion heaters are among the most widely used industrial heating solutions for aggressive chemical environments because of their outstanding corrosion resistance, long service life and contamination-free operation.

These heaters are commonly installed in metal finishing tanks, electroplating systems, semiconductor processing equipment, chemical storage vessels and water treatment systems where precise temperature control and maximum chemical compatibility are essential. Available in flanged, over-the-side, screw plug and custom-engineered configurations, PTFE immersion heaters can be designed to suit virtually any tank size, voltage requirement or installation condition.

PTFE flanged immersion heaters are commonly used for:

• Sulfuric acid heating
• Hydrochloric acid tanks
• Nitric acid solutions
• Chromic acid plating baths
• Pickling tanks
• Electroless nickel plating
• Anodizing systems
• Chemical processing tanks
• Semiconductor wet processing equipment
• Deionized water systems
• Surface finishing operations
• Cleaning and etching solutions
• Wastewater treatment systems
• Chemical storage tanks

Direct immersion heating provides excellent thermal efficiency while maintaining accurate and consistent process temperatures.

Electroplating & Metal Finishing

PTFE immersion heaters are widely used for nickel plating, chrome plating, electropolishing, anodizing and chemical conversion coating applications where corrosive chemicals require maximum sheath protection.

Chemical Processing

Ideal for heating acids, alkalis, solvents and chemical mixtures used throughout manufacturing and processing facilities.

Semiconductor Manufacturing

PTFE heaters help maintain process purity while heating sensitive chemical solutions used during wafer cleaning, etching and processing operations.

Water & Wastewater Treatment

Used for chemical treatment systems, process tanks and storage vessels where corrosion resistance is critical.

Pharmaceutical & Laboratory Applications

Suitable for high-purity applications requiring contamination-free heating and exceptional chemical compatibility.

Features & Benefits

Exceptional Chemical Resistance

PTFE fluoropolymer offers outstanding resistance to many acids, alkalis and aggressive chemical solutions, helping extend heater life and reduce maintenance costs.

Low Watt Density Design

Low surface watt densities help reduce hot spots, improve process temperature uniformity and maximize heater service life.

Corrosion Resistant Construction

Heavy-wall PTFE fluoropolymer coverings protect internal heating elements from chemical attack and permeation.

Energy Efficient Heating

Direct immersion heating transfers energy directly into the liquid, minimizing heat loss and improving heating efficiency.

Custom Engineered Designs

Available in numerous wattages, voltages, flange sizes and element configurations to meet specific application requirements.

Reduced Downtime

Superior corrosion resistance and long operating life help minimize heater replacement frequency and production interruptions.

Available Configurations

NPH PTFE Flanged Immersion Heaters are available in:

• Single element flanged heaters
• Multi-element flanged heaters
• Vertical spiral heaters
• Horizontal spiral heaters
• Tank bottom heaters
• Flexible riser heaters
• Rigid riser heaters
• Deep tank heaters
• Low-profile designs
• Custom engineered configurations

Single and three-phase models are available in a wide range of voltages and wattages.

Optional Safety & Control Features

For improved reliability and protection, PTFE immersion heaters may be supplied with:

• Thermal over-temperature protection
• Low liquid level protection
• High-limit temperature controls
• Digital temperature controllers
• RTD sensors
• Thermocouples
• Ground fault protection
• Corrosion-resistant terminal enclosures
• Explosion-proof enclosures for hazardous locations

These safety devices help protect both the heater and the process solution from damage caused by low liquid conditions or overheating.

Information Required for Heater Selection

To properly size and select a PTFE flanged immersion heater, please provide:

• Chemical name and concentration
• Solution volume
• Tank dimensions
• Operating temperature
• Desired heat-up time
• Voltage available
• Single or three-phase power
• Minimum liquid level
• Indoor or outdoor installation
• Hazardous area classification
• Temperature control requirements

Providing complete application information allows NPH to recommend the most suitable heater design, wattage and sheath configuration for maximum performance and service life.