VTA-50 four-port valves for thermostatic operation, thermostat threaded connection M 30 x 1.5

Thread M 30 x 1.5 for “H” heads, radiator connection on lower side, flat seal, pipe spacing 50 mm. With immersion tube L = 200 mm, Ø = 11 mm, radiator removable under pressure, replacement of the thermostatic upper part under pressure using HERZ Changefix “H”. Pipe connections G 3/4 with cone must be ordered separately.