When replacing an old AR series regulator with the following conditions (A to E), select a regulator from the AR20-B to AR60-B series.
(A) The set pressure is 0.7 to 0.85 MPa. (B) A square embedded type pressure gauge or digital pressure gauge is required. (C) The same dimensions for panel mounting are required. (D) A regulator with a backflow function is required.

Knob Cover

Please prepare the padlock at the customers site. -8- 6Dimensions A B E D Piping Center C E D Piping Center AR-D,ARM-D series AW-D,AWM-D,AWD-D series A B C D E AR20(K)-D,AR20M(K)-D AW20(K)-D,AWM20-D,AWD20-D Applicable Part No.

Special Applications: Clean Series, Body Size: 20, Reverse Flow: No, Thread: NPT, Port Size: 02 [1/4 (Size 20, 25, 30, 40)], Accessory, Not Attached: B [Bracket (Size 20 to 60)], Option: Nameplate/Caution Plate for Bowl in Imperial Units

This is a legacy product, and replaced byAL40-N02B-Z-A, LUBRICATOR, AIRLINE EQUIPMENT, AL MASS PRO, DC, AL MASS PRO 1/4 MODULAR (NPT), 3.13101 lb

This is a legacy product, and replaced byVHS20-N02B-Z, VALVE, LOCK-OUT *LQA, VALVE, VHS HAND VALVE, EA, VHS BODY PT 1/4NPT (F), 0.39683 lb

This is a legacy product, and replaced byVHS40-N02B-Z

This is a legacy product, and replaced byVHS20-N02B-Z, VALVE, 3 PORT LOCK OUT, VALVE, VHS HAND VALVE, EA, VHS BODY PT 1/4NPT (F), 0.22046 lb

This is a legacy product, and replaced byVHS40-N02B-Z, VALVE, 3 PORT LOCK OUT, VALVE, VHS HAND VALVE, EA, VHS BODY PT 1/4NPT (F), 1.12986 lb

This is a legacy product, and replaced byAR20-N02B-YZ-B-X48, REGULATOR, MODULAR, EPOXY COAT, AIRLINE EQUIPMENT, AR MASS PRO, DC, AR MASS PRO 1/4 MODULAR (PT), .84524 lb, Regulator Series ARPages 346 through to 355ModelPort sizeOptionsRegulator Series ARPages 346 through to 355AR201/8, 1/4BracketSquare embedded type pressure gauge (except the AR10)Round type pressure gauge Digital

This is a legacy product, and replaced byAR20-N02B-NYZ-B, REGULATOR, MODULAR, AIRLINE EQUIPMENT, AR MASS PRO, DC, AR MASS PRO 1/4 MODULAR (PT), .84524 lb, Regulator Series ARPages 346 through to 355ModelPort sizeOptionsRegulator Series ARPages 346 through to 355AR201/8, 1/4BracketSquare embedded type pressure gauge (except the AR10)Round type pressure gauge Digital pressure switch

This is a legacy product, and replaced byAR20-N02B-1Z-B, REGULATOR, MODULAR, AIRLINE EQUIPMENT, AR MASS PRO, DC, AR MASS PRO 1/4 MODULAR (PT), .53539 lb

This is a legacy product, and replaced byAW30-N02B-2Z-B, FILTER REGULATOR, MODULAR, AIRLINE EQUIPMENT, AW MASS PRO, DC, AW MASS PRO 1/4 MODULAR (NPT), 2.42350 lb

This is a legacy product, and replaced by10-AW20-N02B-JZ-B, FILTER REG, MODULAR CLN ROOM, AIRLINE EQUIPMENT, AW MASS PRO, D5, AW MASS PRO 1/4 CLEAN ROOM, 1.42731 lb

Body Size: 20, Backflow: w/o Backflow Function, Thread: N (NPT), Port Size: 02 (1/4), Options: B (w/Bracket), Set Pressure: 0.05 to 0.85 MPa Setting, Exhaust Mechanism: Relieving Type, Flow Direction: Left to Right, Knob: Downward, Pressure Units: Z (Unit on Product Label: psi, Pressure Gauge: MPa/psi Dual Scale)

Regulator, Pressure Boosting Valve: Regulator, Regulator Type: Standard, Shape: Standard, Operating Environment: Standard, Compatible Fluid: Air, Exhaust Mechanism (Air Bleed): [Included] Relief, Reverse Flow Function (Relief): No, Supply Side Connection Type: [NPT] NPT, Supply Side, Connection Diameter: 1/4, Flow Direction: [Right] From Left to Right, Control Side Connection Type: [NPT]

Special Applications: 10-AR (Clean Series), Body Size: 20, Reverse Flow: No, Thread: N (NPT), Port Size: 02 [1/4 (Size 20, 25, 30, 40)], Accessory, Not Attached: B [Bracket (Size 20 to 60)], Option: NZ (N+Z)

Special Applications: Clean Series, Body Size: 20, Reverse Flow: No, Thread: NPT, Port Size: 02 [1/4 (Size 20, 25, 30, 40)], Accessory, Not Attached: B [Bracket (Size 20 to 60)], Option: N+Z

Note) The set nuts of the AR-A series and those of the AR-B/AR-D series differ in size as well as part number.
The AR-A series catalog can be found here.
The AR-B series catalog can be found here.

SMC Regulator (With Backflow Function) AR20(K)-B To AR60(K)-B Series.Features· Specifications with a backflow function feature an inbuilt mechanism for quickly exhausting the air-pressure at the outlet side.

When assembling high-pressure special order products, AF20 to 60-*-A-X425 and AR20 to 60-*-B-X425, prepare a nipple for installation.