Model 19 Anti Rapture Freezeless Outdoor Faucet Prevent A Bursting Faucet Tube With-Anti Rapture Freezeless Sillcock. Model 19 Faucet Includes A Patented Pressure Relief Valve (PRV) That Prevents Bursting During Freezing Conditions, Even If A Hose Is Accidentally Left Connected To The Faucet. The Faucet Will Still Freeze, However, It Will Not Rupture! As A Result, This Product Prevents Water Damage When The Hose Is Left Connected. P Inlet - 1/2" Female Pipe Thread; 3/4" Male Pipe Thread EPDM Rubber Packing Helps Prevent Leaking Behind The Packing Nut Stainless Steel Seat To Prevent From Leaking At The Back Of The Faucet Full-Circle Operating Threads Cover The Valve Body And Retainer For A Secure And Tight Fit Powder-Coated Die-Cast Aluminum Oval Handle For Strength Standard "0" Size Seat Washer No-Lead Solder Repair Parts Readily Available