Thermostatic Control Head (with remote adjusting knob)

Description: 

For radiator valves.
With remote adjusting knob, liquid-filled element.

Fits valves: 220, 221, 338, 339 and 676 Series (direct coupling)

Temp range:  43° to 82°F (6°- 28°C)

Capillary length: 78" (2 m)