... gear and switch. 3, Multi-assembling, easy to install. 4, Float ball structure, no leakage, especially suitable for heavy pollution conditions ... . 5, good substitution for solenoid valve. 6, High protection class, can be worked in moistconditions. IP65 ... for 1, IC card meters, heat energy meters, air-warm valve. 2, HVAC and fire work. 3, Water equipment, uto- ...