Woodford Model 17 anti-siphon freezeless sillcock 1/2 In. sweat x 1/2 In. MIP X 3/4 In. MHT (male hose thread). Brass. Designed for residential irrigation purposes. Pressure rating is 125 psi (pounds per square inch). Features include: Anti-siphon protection, integral backflow device protects up to 125 psi of backpressure, eliminating the need for an add-on vacuum breaker. Faucet will not rupture from freezing when the valve is shut off and the hose is removed. EPDM (Ethylene Propylene Diene Monomer) rubber packing helps prevent leaking behind the packing nut. Stainless steel seat to help prevent wire draw. Full-circle operating threads on the valve body and retainer for a secure fit. Powder-coated die-cast aluminum round handle for strength. Standard Zero "0" size seat washer. Adjustable polycarbonate wall flange. No-lead solder. Repair parts readily available.