Bronze body with union ends, direct or reverse acting, stainless steel trim. Also available as a 3-way valve for diverting or mixing applications. Brass thermal systems standard. Stainless steel, Teflon® or PVC coated thermal system available as special option. Temperature ranges from -15 to 415°F [-25 to 252°C]. As temperature rises in the bulb, liquid in the bulb vaporizes and transmits power through the tubing to a bellows in the control valve. Heating or cooling fluid passing through the valve is thus modulated to maintain a desired temperature in the process being controlled. 

Applications:
Designed for use in installations where a certain temperature must be maintained in heating or cooling fluids.

Sizes: 1/2", 3/4", 1", 1-1/4", 1-1/2", 2"

Options:
Different bulb sizes available.