Plumbing Valves descriptions： We use high-quality raw materials, all materials are very suitable for the product, please rest assured to buy. Automatic Water Level Control Valve, And Tower Tank. Features: This Product is Specially Designed for Water Level Control of Water Storage Tanks Such As Water Towers and Swimming Pools, to Prevent Overflow of Water Towers when Supplying Tap Water, and Traditional Float Changeable Products. Suitable for Water Basins, Solar Energy, Water Heaters, Aquaculture, Food Processing Equipment, Humidifiers, Water Heaters, Livestock and Pool Water, Etc. Specifications: Product Material: PA66 Thread Size: 1/2 "3/4" 1 " Pressure Range: 0.2kg-10kg                                                                                                                                                                     Applicable Medium: Pure Water Applicable Temperature: 120 ° C Product Principle: When the Water in the Water Container is Lower Than the Water Level Control Control Valve, the Inlet Valve Opens the Water, and when the Water Level Rises to the Water Level Control Line Control Valve, the Inlet Valve Closes and Stops the Water Supply. Maintenance: When the Water Quality is Not Purified, Proper Maintenance is Required. Structure: Ball Standard or Nonstandard: Standard Material: Plastic Model Number: HT-FQF1/2-1 NC or NO: Normally Open Water Intake Method: Water from the Side  . Products number : SOMONO154398