Compensated piston operation. Female/female threads. Body in nickel-plated brass. Minimum and maximum working temperatures: 0°C, 80°C. Maximum inlet pressure: 25bar. Outlet pressure can be adjusted: 1/2" - 3/4" - 1" between 1 and 5,5 bar; 1"1/4 through 4" between 1 and 6 bar. Factory preadjustment 3 bar. Outlet pressure gauge connection 1/4" on both sides. Threads ISO228 (equivalent to DIN EN ISO 228 and BS EN ISO 228). Available also with NPT thread in the sizes 2"1/2 - 3" - 4".