top of page

Model C:

Three way thermostatic valve


AMOT Model C thermostatic valves are available in a wide selection of sizes and settings to fill a multitude of fluid temperature control requirements. These valves may be mounted in any position and use the proven expanding wax principle to actuate the 3-way temperature element assemblies. The model C valves may be used for diverting or mixing service. They make very economical temperature limiting valves to prevent scalding in home, motel or hotel hot water supply systems. Radiant heating systems can use these valves in limiting water temperature to prevent surface cracking and over-heating of plastic piping. Other applications include electronic and battery cooling circuits, pump temperature relief valves etc.


Features and Benefits

  • Flow Rates of 6 - 54 GPM Tamper-proof temperature

  • Settings of 65 F to 235 F combinations available:

  • Steel, Bronze, Cast Iron, and Aluminum Housing

  • 1/2" to 1-1/2" Pipe Sizes

  • Threaded & Flanged Connections  

  • Positive 3-way valve action

  • Completely Self-Contained Applications

  • Engine and Compressor Cooling System

  • Lube Oil Systems

  • Cogeneration Heat Recovery Systems

  • Process Control

  • Temperature Mixing or Diverting, test

Temperature ranges:  18-113°C  (65-235°F)

Materials:  steel, bronze, cast iron or aluminum


Seal materials: Buna N/Nitrile, Viton, Neoprene, Ethylene, propylene rubber

Flow rate:1.4 - 12m3/hr6 - 54 US gpm

Valve sizes(bore):15, 20, 25, 32, 40 mm1/2, 3/4, 1, 1 1/4, 1 1/2 inch

Mounting position: Any orientation

Connections: Flanged or threaded

Recommended pressure drop: 0.14 to 0.5 bar2 to 7 psi

Model code examples: (see also data sheet p. 8.)

 1¼CCMCU12001F1AA: 11/4'' valse high flow w/3 elements (CCM), cast iron (C), connections BSP (PL) to BS 21 (U), 120°F element (120), standard element w/buna N/Nitrile-seal (01), leak hole size 1/8'' / 3,2mm (F), leak hole number (1), no customer customizations (AA)


The valve is supplied with the temperature element assemblies factory-set to the nominal temperature setting. Temperature is sensed at Port A which remains open to Port B (bypass) until the fluid temperature reaches a point 5 - 10°F (3 - 6°C) below the nominal setting. As the temperature continues to rise, the sliding valve moves to close off Port B and open Port C (connected to the cooler or heat exchanger) Port B is fully closed 8 - 10°F (4 - 6°C) above the nominal setting.


Download data sheet C-valve >>

bottom of page