Thermostatic 3-Way Control Valves

AMOT Thermostatic 3-Way Control Valves provide precise, automatic temperature regulation by sensing and redirecting fluid flow, without the need for power or electronics. Designed for reliability in demanding environments, these valves are ideal for engine cooling systems, lubricating oil circuits, heat exchangers, and closed-loop temperature control in industrial equipment.

Available in a wide range of sizes (½" to 8"), pressure ratings (up to 1050 PSI), and body materials—including stainless steel, carbon steel, bronze, cast iron, and aluminum—AMOT 3-way valves are built to meet specific system requirements. Choose from dozens of end connection options such as ASME/ANSI, BSP, JIS, PN, and NPT, as well as customizable manual override configurations.

Whether you’re mixing water/glycol or regulating ISO-grade oils (ISO 32–320), these thermostatic valves deliver long-term performance and minimal maintenance in mission-critical systems.

Key Features:

• Internal-sensing thermostat with no external power required
• Wide selection of valve sizes, materials, and pressure classes
• Compatible with ISO-grade fluids and water/glycol mixes
• Options for adjustable or lever-style manual overrides
• Engineered for OEMs, industrial processors, and equipment maintenance teams

Use the product filters to select the correct valve by flow rate, fluid type, temperature range, connection standard, and pressure requirement. Or consult our selection guide to find the right 3-way mixing/diverting valve for your application.

View our selection guide or use the filters to help select the right valve.