Watts 0009257 25AUB-Z3, 3/4", bronz Lead Free copper silicon alloy body construction. Versatile enough to use in commercial or residential applications. Integral stainless steel strainer is removable for cleaning. 3/4-inch NPT. Maximum working pressure: 300 psi (21 bar), adjustable reduced pressure range: 25 to 75 psi (172 to 517 kPa), standard pressure setting: 50 psi (344 kPa).