Models Air eliminator - ADCA AE16SS - 1/2" 2 54 0 DIN 16272 Type A Gauge valve, G1/2" 2 149 0 DIN 16271 Type A Gauge valve, G1/2" 5 284 0 Air pressure regulators - 1/2" to 1" connection - model DR5440 5 270 0 Operator 10 660 2