AR10-A: Rc1/16
AR20-A to AR40-A, AR20(K)-B to AR60(K)-B, and AR20(K)-D to AR40(K)-D: Rc1/8
Old AR10: Rc1/16
Old AR20(K) to AR30(K): Rc1/8
Old AR40(K) to AR60(K): Rc1/4
Old AR1000: Rc1/16
Old AR2000 to AR3000: Rc1/8
Old AR4000 to AR6000: Rc1/4

AR10-A: Rc1/16
AR20-A to AR40-A, AR20(K)-B to AR60(K)-B, and AR20(K)-D to AR40(K)-D: Rc1/8
Old AR10: Rc1/16
Old AR20(K) to AR30(K): Rc1/8
Old AR40(K) to AR60(K): Rc1/4
Old AR1000: Rc1/16
Old AR2000 to AR3000: Rc1/8
Old AR4000 to AR6000: Rc1/4

Refer to the AR-A/AR-B/AR-D series catalog excerpt, which has been reproduced below.
The part number of the standard AR20 to AR60 round type pressure gauge is “G36-10-01,” or “G46-10-01”(for the R thread type).
For example, the part number of the AR30-03BG-A pressure gauge is “G36-10-01.”

Refer to the AR-A/AR-B/AR-D series catalog excerpt, which has been reproduced below.
The part numbers of standard AR20 to AR60 round type pressure gauges are “G36-10-01” and “G46-10-01”(for the R thread type).
For example, the part number of the AR30-03BG-A pressure gauge is “G36-10-01.”

Body Size: 20, Backflow: w/o Backflow Function, Thread: F (G), Port Size: 01 (1/8), Options: BG (B+G), Set Pressure: 0.05 to 0.85 MPa Setting, Exhaust Mechanism: Relieving Type, Flow Direction: Left to Right, Knob: Downward, Pressure Units: Unit on Product Label: MPa, Pressure Gauge in SI Units: MPa

, Connection Diameter: 1/8, Pressure Gauge: [With Pressure Gauge] Round-shaped pressure gauge (with limit indicator), Size of Body: 20, Accessory: With Bracket, Set Pressure: 0.05 to 0.85 MPa, Pressure Unit: Nameplate and pressure gauge units: MPa, Handle Direction / Position: Handle downward

Body Size: 20, Thread: F (G), Port Size: 01 (1/8), Option: BG (B + G), Semi-Standard: 1 (0.02 to 0.2MPa Setting)

, Connection Diameter: 1/8, Pressure Gauge: [With Pressure Gauge] Round-shaped pressure gauge (with limit indicator), Size of Body: 20, Accessory: With Bracket, Set Pressure: 0.02 to 0.2 MPa, Pressure Unit: Nameplate and pressure gauge units: MPa, Custom-made Specifications: None, Handle Direction / Position: Handle downward

VBA-OM-L007

Port size 1/8 1/4 3/8 1/2 Since the booster regulator vibrates due to the reciprocation of the internal piston, mount 4 bolts onto the mounting holes and tighten them completely. Tightening torque 7 to 9Nm 12 to 14Nm 22 to 24Nm 28 to 30Nm When mounting the silencer and the elbow for silencer, hold the end of the body (the side without thread) and screw it in.

Body Size: 20, Backflow: w/o Backflow Function, Thread: F (G), Port Size: 01 (1/8), Options: BG (B+G), Set Pressure: 1 (0.02 to 0.2 MPa Setting), Exhaust Mechanism: N (Non-relieving Type), Flow Direction: Left to Right, Knob: Y (Upward), Pressure Units: Unit on Product Label: MPa, Pressure Gauge in SI Units: MPa

Body Size: 20, Backflow: w/o Backflow Function, Thread: F (G), Port Size: 01 (1/8), Options: BG (B+G), Set Pressure: 0.05 to 0.85 MPa Setting, Exhaust Mechanism: Relieving Type, Flow Direction: R (Right to Left), Knob: Downward, Pressure Units: Unit on Product Label: MPa, Pressure Gauge in SI Units: MPa

Body Size: 20, Backflow: w/o Backflow Function, Thread: F (G), Port Size: 01 (1/8), Options: BG (B+G), Set Pressure: 0.05 to 0.85 MPa Setting, Exhaust Mechanism: Relieving Type, Flow Direction: Left to Right, Knob: Y (Upward), Pressure Units: Unit on Product Label: MPa, Pressure Gauge in SI Units: MPa

, Connection Diameter: 1/8, Pressure Gauge: [With Pressure Gauge] Round-shaped pressure gauge (with limit indicator), Size of Body: 20, Accessory: With Bracket, Set Pressure: 0.05 to 0.85 MPa, Pressure Unit: Nameplate and pressure gauge units: MPa, Handle Direction / Position: Handle downward

Body Size: 20, Backflow: w/o Backflow Function, Thread: G, Port Size: 1/8, Options: B+G, Set Pressure: 0.02 to 0.2 MPa Setting, Exhaust Mechanism: Non-relieving Type, Flow Direction: Left to Right, Knob: Upward, Pressure Units: Unit on Product Label: MPa, Pressure Gauge in SI Units: MPa, Made to Order: -

Body Size: 20, Backflow: w/o Backflow Function, Thread: G, Port Size: 1/8, Options: B+G, Set Pressure: 0.05 to 0.85 MPa Setting, Exhaust Mechanism: Relieving Type, Flow Direction: Left to Right, Knob: Upward, Pressure Units: Unit on Product Label: MPa, Pressure Gauge in SI Units: MPa, Made to Order: -

Size: 1/8, Reverse Flow: Regulator, Standard, Thread: G, Port Size: 1/8, Accessory: B+G, Option 1: -, Option 2: -

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.

Size: 1/8, Reverse Flow: Regulator, Standard, Thread: G, Port Size: 1/8, Accessory: B+G, Option 1: 0.02~0.2MPa Setting, Option 2: Upward Handle