This is a legacy product, and replaced byARG20K-F01G1H-B-X406, REGULATOR, GAUGE-HANDLE, AIRLINE EQUIPMENT, ARG REGULATOR W/PRESSURE GAUGE, CA, ARG 1/8 MODULAR, PT, 0.89445 lb

Body Size: 20, Thread: N (NPT), Port Size: 02 (1/4), Option: Standard, Semi-Standard 1: C (Bowl Guard), Semi-Standard 2: Z (NPT Porting requires Z, Name Plate, Caution Plate for Bowl, & Pressure Gauge in Imperial Units: psi, °F), Made to Order: X406 (0.4 MPa Setting)

Body Size: 30, Thread: N (NPT), Port Size: 02 (1/4), Option: Standard, Semi-Standard 1: Standard, Semi-Standard 2: Z (NPT Porting requires Z, Name Plate, Caution Plate for Bowl, & Pressure Gauge in Imperial Units: psi, °F), Made to Order: X406 (0.4 MPa Setting)

Body Size: 20, Thread: N (NPT), Port Size: 01 (1/8), Option: Standard, Semi-Standard 1: C (Bowl Guard), Semi-Standard 2: Z (NPT Porting requires Z, Name Plate, Caution Plate for Bowl, & Pressure Gauge in Imperial Units: psi, °F), Made to Order: X406 (0.4 MPa Setting)

Body Size: 20, Thread: N (NPT), Port Size: 01 (1/8), Option: H (Set Nut for Panel Mount), Semi-Standard 1: C (Bowl Guard), Semi-Standard 2: Z (NPT Porting requires Z, Name Plate, Caution Plate for Bowl, & Pressure Gauge in Imperial Units: psi, °F), Made to Order: X406 (0.4 MPa Setting)

This is a legacy product, and replaced byAW20-N02-CZ-B-X406

This is a legacy product, and replaced byAR20-N01-Z-B-X406, REGULATOR, MODULAR, AIRLINE EQUIPMENT, AR MASS PRO, CC, AR MASS PRO 1/8 MODULAR (NPT), 0.48501 lb

This is a legacy product, and replaced byAR20-N02-Z-B-X406, REGULATOR, MODULAR, AIRLINE EQUIPMENT, AR MASS PRO, DC, AR MASS PRO 1/4 MODULAR (PT), 0.44092 lb

This is a legacy product, and replaced byAR20-N02E-Z-B-X406, REGULATOR, MODULAR, AIRLINE EQUIPMENT, AR MASS PRO, DC, AR MASS PRO 1/4 MODULAR (PT), 0.44092 lb

The latest version can be found hereAR20K-N02-Z-B-X406, REGULATOR, MODULAR, AIRLINE EQUIPMENT, AR MASS PRO, DC, AR MASS PRO 1/4 MODULAR (PT), .44092 lb, Regulator Series ARPages 346 through to 355ModelPort sizeOptionsRegulator with Backflow Function Series AR KPages 346 through to 355AR20K1/8, 1/4BracketSquare embedded type pressure gauge (except the AR10)Round type pressure gauge

Body Size: 50, Backflow: w/o Backflow Function, Thread: N (NPT), Port Size: 06 (3/4), Options: BG (B+G), Set Pressure: 0.05 to 0.85 MPa Setting, Exhaust Mechanism: N (Non-relieving Type), Flow Direction: Left to Right, Knob: Downward, Pressure Units: Z (Unit on Product Label: psi, Pressure Gauge: MPa/psi Dual Scale), Made to Order: X406 (0.4 MPa Setting)

Body Size: 50, Backflow: w/o Backflow Function, Thread: N (NPT), Port Size: 06 (3/4), Options: B (w/Bracket), Set Pressure: 0.05 to 0.85 MPa Setting, Exhaust Mechanism: N (Non-relieving Type), Flow Direction: Left to Right, Knob: Downward, Pressure Units: Z (Unit on Product Label: psi, Pressure Gauge: MPa/psi Dual Scale), Made to Order: X406 (0.4 MPa Setting)

This is a legacy product, and replaced byAR50-N06E-Z-B-X406 AR MASS PRO. REGULATOR, MODULAR. AIRLINE EQUIPMENT. AR MASS PRO 3/4 MODULAR (PT). 2.64000 lb. GC.

Back Flow: w/o Backflow, Thread: N (NPT), Port Size: 03 (3/8), Options: DH (D+H), Set Pressure: 0.05 to 0.85 MPa Setting, Bowl: Polycarbonate Bowl, Bowl Guard: None, Drain Port: w/Drain Cock, Exhaust Mechanism: Relieving Type, Flow Direction: Flow Direction: Left to Right, Drain Cock w/Barb Fitting: None, Pressure Units: Z [Product: psi, °C; Pressure Gauge: psi (and MPa)], Made to Order: X406

Flow: w/o Backflow, Thread: N (NPT), Port Size: 03 (3/8), Options: DGH (D+G+H), Set Pressure: 0.05 to 0.85 MPa Setting, Bowl: Polycarbonate Bowl, Bowl Guard: None, Drain Port: w/Drain Cock, Exhaust Mechanism: Relieving Type, Flow Direction: Flow Direction: Left to Right, Drain Cock w/Barb Fitting: None, Pressure Units: Z [Product: psi, °C; Pressure Gauge: psi (and MPa)], Made to Order: X406

Size: 20 (1/8), Reverse Flow Function: Regulator, Standard, Thread: N (NPT), Port Size: 02 (1/4), Accessory 1: None, Pressure Gauge Angle: G1 (0°), Accessory 2: None, Option: NZ (Non-relieving+ Name Plate & Gauge w/PSI), B: B, Made to Order: X406 (0.4 MPa Setting)

This is a legacy product, and replaced byARG20-02G1H-B-X406 "REGULATOR. N.

Backflow, Thread: N (NPT), Port Size: 02 (1/4), Options: D (N.O., Normally Opened), Set Pressure: 0.05 to 0.85 MPa Setting, Bowl: 6 (Nylon Bowl), Bowl Guard: None, Drain Port: w/Drain Cock, Exhaust Mechanism: Relieving Type, Flow Direction: Flow Direction: Left to Right, Drain Cock w/Barb Fitting: None, Pressure Units: Z [Product: psi, °C; Pressure Gauge: psi (and MPa)], Made to Order: X406

Body Size: 40, Backflow: w/o Backflow Function, Thread: N (NPT), Port Size: 06 (3/4), Options: H (w/Set Nut, for Panel Mount), Set Pressure: 0.05 to 0.85 MPa Setting, Exhaust Mechanism: Relieving Type, Flow Direction: R (Right to Left), Knob: Downward, Pressure Units: Z (Unit on Product Label: psi, Pressure Gauge: MPa/psi Dual Scale), Made to Order: X406 (0.4 MPa Setting)

Body Size: 40, Backflow: K (w/Backflow Function), Thread: N (NPT), Port Size: 03 (3/8), Options: G (Round Type Pressure Gauge, w/Limit Indicator), Set Pressure: 0.05 to 0.85 MPa Setting, Exhaust Mechanism: Relieving Type, Flow Direction: Left to Right, Knob: Y (Upward), Pressure Units: Z (Unit on Product Label: psi, Pressure Gauge: MPa/psi Dual Scale), Made to Order: X406 (0.4 MPa Setting