2/3 X thermostat head M 30 x 1.5 radiator valve replacement head TRV

Description:
-For valves with M 30 x 1.5 threaded connections and valves with M 30 x 1.5 threaded connections for radiator manufacturers.
-Zero setting ratio upper limit: ❉,1，2,3,4，5
-It has antifreeze protection and adjustment functions, which can provide adjustment assistance
-There is no fixed adjustment range, it is affected by heating temperature and room temperature
-By marking with arrows, you can easily find the desired temperature
-Head only supplied-valve is NOT included.
--Applicable spool size: 15mm
--Note: 5 levels of modulation, easy to install, if you need to turn off the thermostat, just use the modulation index arrow ❉.
The package includes:
2/3 * M 30 x 1.5 thermostat.