This product is small and does not take up space, and it is superior to the traditional process to effectively increase the water output, which is A ball float valve inside allows water to flow until a specific level is reached. Once the water reaches this level, the float valve be pushed up with water due to buoyancy and stop the flow of water. When the water level starts dropping, the valve open again, and the water start to flow again, so no need electricity. stainless steel fully automatic water level control float valve is made of food grade material stainless steel, ensuring the safety of drinking water. With an exquisite appearance and hard shell, it has strong friction and impact resistance, effectively increasing the service life of the product, and making friction in life no longer a problem. The float valve comes with filter, the filter must be used in the water inlet, avoid sand and stone blocking the floating ball.We used stainless steel as the valve body, used stainless steel screw, never rust, very safe. pplicable ambient temperature compared with other ball valves, the stainless steel shell has a higher melting point, high-temperature resistance, resistance, waterproof and fire prevention, and is widely used. This product is suitable for water tanks water towers/pools /water pools/solar water tanks/water storage, etc. No electricity is needed, and clean water with a pressure 0.2 kg is used to control the water level Specification: type: B-1/2inch, side inlet Applicable temperature: 0-100 ° C Working pressure range: ≤ 1.0MPa Residential tap water pressure: 0.3~0.5MPa Pressure range: 0.2~10KG Applicable medium temperature: ≤ 1~80℃ Material: stainless steel colour: silver Package Contents: 2 x blow off 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.