The float switch regulates fliud level in the tank or well etc. The float switch is resistant to water (sewage water), it is the most extensive used pump suitable for arable land irrigation, mine mine water drainage, as well as for flood control cmpaign. Its compactness in construction, tightness in sealing quality, khigh efficiency in enegy-conservation and its ion duralility for usesea. It is relative capable of being used for oil, most acids and alkalis. The folat switch is not explosinon froof.