... and switch. 3, Multi-assembling, easy to install. 4, Float ball structure, no leakage, especially suitable for heavy pollution ... class, can be worked in moistconditions. IP65 Suitable for 1, IC card meters, heat energy meters, air ... -warm valve. 2, HVAC and fire work. 3, Water equipment, uto-controlwatersystem, industrial mini-auto equipment ... eletric warm valve1/2" brass full port for heating system