Body Option: 0 (Internal Pilot), Port Size: N02 (NPT1/4), Style: 00 (Basic Style), Suffix: None [Or Polyacetal (Std) in Case of Roller Material), Accessory: F [Foot Bracket (Internal Pilot Type Only)

Body Option: 0 (Internal Pilot), Port Size: N02 (NPT1/4), Style: 05 (Straight Plunger), Suffix: None [Or Polyacetal (Std) in Case of Roller Material), Accessory: F [Foot Bracket (Internal Pilot Type Only)

Number of Ports: 2 Port, Body Option: U (w/Bottom Mouinting Thread), Port Size: N02 (NPT 1/4), Actuator Type: 34 (Twist Selector, 2 Position), Suffix: B (Black), Bracket: B (w/Bracket)

Size: 46 (42.5 O.D.), Display Pressure: P10 (1.0MPa, 150psi), Connection Thread: N02 (NPT 1/4), Clear Cover Material: Polycarbonate, Attachment: w/o Cover Ring Assembly/None, Option: X30 (Both MPa and psi)

Size: 46 (42.5 O.D.), Display Pressure: P4 (0.4MPa, 60psi), Connection Thread: N02 (NPT 1/4), Clear Cover Material: Polycarbonate, Attachment: w/o Cover Ring Assembly/None, Option: X30 (Both MPa and psi)

Size: 46 (42.5 O.D.), Display Pressure: P2 (0.2MPa, 30psi), Connection Thread: N02 (NPT 1/4), Clear Cover Material: Polycarbonate, Attachment: w/o Cover Ring Assembly/None, Option: X30 (Both MPa and psi)

Size: 46 (42.5 O.D.), Display Pressure: P10 (1.0MPa, 150psi), Connection Thread: N02 (NPT 1/4), Clear Cover Material: Polycarbonate, Attachment: C2 (Clear Cover Removable, Wrench Tighten), Option: X30 (Both MPa and psi)

Nozzle Diameter: 13 (ø1.3mm), Vacuum Pressure: L (-48 kPa: ZH05 to 13D*A; -66 kPa: ZH15 to 20D*A), SUP: 09 (One-touch Fitting ø5/16"), VAC: N02 (Screw-in NPT 1/4), EXH: 11 (One-touch Fitting ø3/8"), Accessories: S (w/Standard Bracket, w/Silencer)

Body Option: 0 (Internal Pilot), Port Size: N02 (NPT1/4), Style: 33 [Push Button (Flush)], Suffix: None [Or Polyacetal (Std) in Case of Roller Material), Accessory: F [Foot Bracket (Internal Pilot Type Only)]

Body Option: 0 (Internal Pilot), Port Size: N02 (NPT1/4), Style: 33 [Push Button (Flush)], Suffix: None [Or Polyacetal (Std) in Case of Roller Material), Accessory: F [Foot Bracket (Internal Pilot Type Only)

Number of Ports: 5 Port (Twist Selector, 3 Position Only), Body Option: U (w/Bottom Mouinting Thread), Port Size: N02 (NPT 1/4), Actuator Type: 35 ( Twist Selector, 3 Position), Suffix: B (Black)

Number of Ports: 5 Port (Twist Selector, 3 Position Only), Body Option: U (w/Bottom Mouinting Thread), Port Size: N02 (NPT 1/4), Actuator Type: 35 ( Twist Selector, 3 Position), Suffix: R (Red)

Size: 46 (42.5 O.D.), Display Pressure: P2 (0.2MPa, 30psi), Connection Thread: N02 (NPT 1/4), Clear Cover Material: N (Nylon), Attachment: w/o Cover Ring Assembly/None, Option: X30 (Both MPa and psi)

Size: 46 (42.5 O.D.), Display Pressure: P4 (0.4MPa, 60psi), Connection Thread: N02 (NPT 1/4), Clear Cover Material: N (Nylon), Attachment: w/o Cover Ring Assembly/None, Option: X30 (Both MPa and psi)

Size: 46 (42.5 O.D.), Display Pressure: P10 (1.0MPa, 150psi), Connection Thread: N02 (NPT 1/4), Clear Cover Material: Polycarbonate, Attachment: C (Clear Cover Non Removable, Wrench Tighten), Option: X30 (Both MPa and psi)

Size: 46 (42.5 O.D.), Display Pressure: P10 (1.0MPa, 150psi), Connection Thread: N02 (NPT 1/4), Clear Cover Material: N (Nylon), Attachment: w/o Cover Ring Assembly/None, Option: X30 (Both MPa and psi)

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

Flow Rate Range: 11 [2 to 100 (50 for CO2) â„“/min], Flow Adjustment Valve: None, Port Size: N02 (NPT1/4), Piping Entry Direction: Straight, Output Specification: 1 [Analog Output (1 to 5 V)], Instruction Manual: N (None), Calibration Certificate: A (w/Calibration Certificate)

Flow Rate Range: 11 [2 to 100 (50 for CO2) â„“/min], Flow Adjustment Valve: None, Port Size: N02 (NPT1/4), Piping Entry Direction: Straight, Output Specification: 1 [Analog Output (1 to 5 V)], Instruction Manual: With Instruction Manual, Calibration Certificate: A (w/Calibration Certificate), Connector: Lead Wire w/Connector (2 m), Option: R (Bracket for w/o Flow Adjustment Valve: ZS-33-M

Flow Rate Range: 11 [2 to 100 (50 for CO2) â„“/min], Flow Adjustment Valve: S (Yes), Port Size: N02 (NPT1/4), Piping Entry Direction: Straight, Output Specification: 2 [Analog Output (4 to 20 mA)], Instruction Manual: With Instruction Manual, Calibration Certificate: A (w/Calibration Certificate), Connector: Lead Wire w/Connector (2 m), Option: S (Bracket for w/Flow Adjustment Valve)