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Operation
Doc No: OMMC00296 Revision: 2 – Sept 2020
Section 6
Operation
6.1 Operation
The Model C valve is completely automatic in operation and needs no
power supply.
Temperature control is achieved by the automatic movement of a
sliding valve, regulating the fluid flow between ports. Upon an
increase in fluid temperature, large forces are created by a highly
temperature sensitive expanding wax mixture in the element bulb, in
turn acting upon the sliding valve.
6.1.1 Diverting applications
(controls outlet temp from load source)
When valves are used for diverting service, the inlet port A
(temperature sensing port), with Port C being connected to the
cooler, and Port B connected to the cooler by-pass line.
6.1.2 Mixing applications
(controls inlet temp to load source)
When valves are used for mixing service, Port C is the cold fluid inlet
port from the cooler, Port B is the hot by-pass fluid inlet, and Port A
the common outlet. Port A is the temperature sensing port and will
mix the hot and cold fluids in the correct proportion so as to produce
the desired outlet temperature leaving Port A.
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