Float Valve automatically controls water level for most plastic and metal stock tanks, troughs, barrels and pans * Flows up to 245 gallons per hour, operates between 20 and 50 psi * High-grade polystyrene housing with expansion brackets to fit tanks with wider or thicker rims * Accepts a standard 3/4 inch garden hose * Also available in aluminum housing (Item No. TM830T, sold separately)