1", In-Line Jar Top Valve, Operates In The Widest Flow & Pressure Ranges From 0.25 To 30 GPM 0.9 To 113.6 LPM & 10 To 150 PSI 0.7 To 10.3 Bar, Typically Installed Below Ground & Are Housed In A Valve Box Keeping Them Securely Out Of Sight.