Models Air eliminator - ADCA AE16SS - 1/2" 5 136 0 DIN 16272 Type A Gauge valve, G1/2" 4 274 0 DIN 16271 Type A Gauge valve, G1/2" 7 556 0 Air pressure regulators - 1/2" to 1" connection - model DR5440 9 407 0 Operator 10 750 2