Little Giant Trough-O-Matic Float Valves automatically control the water level for most plastic and metal stock tanks, troughs, barrels, and pans. The all-metal valve flows up to 245 gallons per hour and operates at pressure between 20 and 50 psi. Durable aluminum housing with nylon orifice. Comes with expansion brackets to fit tanks rims up to 2 inch thick and 4.325 inch wide. Accepts a standard 3/4 inch garden hose. Measures 7.5 inch long by 3 inch wide by 3.5 inch high. Also available in plastic housing (Item No. TM825T, sold separately).