20mm DN15 G1/2 Automatic Floatvalve Water Tanks Watertower Float Ballvalve Full Automatic Stopvalve with Stainless Steel Screws The automatic floatvalve can automatically supplywater and stopwater as the water level changes. With small volumes and large flows, effective 20% increase in water output, effective water savings. Thread size of the 20mm(DN15, G1/2), the connection part is longer, the connection is more stable. Suitable for water tanks, solar powered product, aquaculture and other automatic water replenishment. Features: Using environmental friendly materials, does not release harmful substances, delicate appearance, corrosion resistance, high pressure resistance, with long durability. 304 stainless steel screws, refuse to water pollution caused by rust. The automatic floatvalve can automatically supplywater and stopwater as the water level changes. Small volumes, large flows, effective 20% increase in water output, effective water savings. Easy to install, with installation indicating arrows designed on the valvebody, you can install according to the direction of the arrows, the disassembly and installation is convenient. Thread size of the 20mm(DN15, G1/2), the connection part is longer, the connection is more stable. The external installation type has an additional threaded waterinlet at the bottom than the internal installation type, it can be installed on both the inside and outside of the watertower, the bottom of the valvebody with a hose (need to purchase separately) to connect to the watertower. The internal installation type can only be installed inside the watertower. The internal installation model can be used for room-temperature occasions; high-temperature and solar-powered occasions require the external installation type. Wide applications, suitable for water tanks, solar powered product, aquaculture and other automatic water replenishment. Working Principle: When the water surface drops, the float ball drops, using the pressure of the water in the waterpipe to open the valvebody sealed silicone plunger, the valvebody opens the watersupply; when the water surface rises, the float ball floats up, the connecting rod drives the sealed silicone plunger into the water hole, the valvebody stops watersupply. Specifications: Name: Automatic Floatvalve  Material: PA6-G30+304 stainless steel  Type: water from the side+external installation type, water from the upside+external installation type, water from the side+internal installation type, water from the upside+internal installation type (optional) Pressure ranges: 0.1-10kg Working temperature: 0-70℃ Thread size: 20mm=DN15=G1/2 Item size: Water from the side+external installation type: 109 * 57 * 107mm / 4.29 * 2.24 * 4.21in Water from the upside+external installation type: 57 * 57 * 148mm / 2.24 * 2.24 * 5.83in Water from the side+internal installation type: 109 * 56 * 83mm / 4.29 * 2.20 * 3.27in Water from the upside+internal installation type: 56 * 56 * 125mm / 2.20 * 2.20 * 4.92in Package size: Water from the side+external installation type: 112 * 112 * 61mm / 4.41 * 4.41 * 2.40in Water from the upside+external installation type: 150 * 75 * 61mm / 5.91 * 2.95 * 2.40in Water from the side+internal installation type: 110 * 89 * 60mm / 4.33 * 3.50 * 2.36in Water from the upside+internal installation type: 125 * 80 * 60mm / 4.92 * 3.15 * 2.36in Package weight: Water from the side+external installation type: 160g / 5.64ounce Water from the upside+external installation type: 160g / 5.64ounce Water from the side+internal installation type: 145g / 5.11ounce Water from the upside+internal installation type: 145g / 5.11ounce Packing List: 1 * Automatic Floatvalve