2pcs Float Valve Water Level Control Switch Upper Water Inlet This valve is the replacement of the traditional float ballcock, which can be applied to systems of high water tanks, pools, water towers of the industry and civil construction, etc. Automatic control, low self-complementary water, water full automatic stop. Beautiful appearance, small size, practical, simple installation. Without electricity, easy to use, , low failure rate, saving water resources. Precautions and maintenance: This production belongs to the liquid level control valves. When installed, the float must be vertical. if you need to install from the top , a Elbow needed to connect the float valve and the inlet line. , the feed line should be fixed in horizontal plane and then connect the automatic water level control valve on the water inlet according to the standard. The main water inlet should be lined with the control valves' Normal Diameter. When using, the globe valve should be all open. If two valves are installed in the same pool, the two valves should be held in the same horizontal plane. Before installing, please clean the impurities in the pipes in case of blocking. If the water quality is not good, then the valves need to be maintained properly. If the users find the time of adding water becomes longer, he can just upload the water inlet and washed. Colour:White Material:plastic style:Water inlet from Upper Package Contents: 2 * float valve Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.