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.”
Size: 20 (1/8), Reverse Flow Function: Regulator, Standard, Thread: N (NPT), Port Size: 02 (1/4), Accessory 1: B (Bracket), Pressure Gauge Angle: G3 (180°), Accessory 2: None, Option: 1NYZ (Combination of 1 + N + Y + Z), B: B
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: 1NYZ (Combination of 1 + N + Y + Z), B: B
Size: 20 (1/8), Reverse Flow Function: K (Regulator w/Backflow Mechanism), Thread: N (NPT), Port Size: 02 (1/4), Accessory 1: None, Pressure Gauge Angle: G4 (270°), Accessory 2: None, Option: 1NYZ (Combination of 1 + N + Y + Z), B: B
Size: 20 (1/8), Reverse Flow Function: K (Regulator w/Backflow Mechanism), Thread: N (NPT), Port Size: 02 (1/4), Accessory 1: None, Pressure Gauge Angle: G4 (270°), Accessory 2: H (Set Nut), Option: 1NYZ (Combination of 1 + N + Y + Z), B: B
Size: 20 (1/8), Reverse Flow Function: Regulator, Standard, Thread: N (NPT), Port Size: 02 (1/4), Accessory 1: None, Pressure Gauge Angle: G3 (180°), Accessory 2: None, Option: 1NYZ (Combination of 1 + N + Y + Z), B: B
Size: 20 (1/8), Reverse Flow Function: K (Regulator w/Backflow Mechanism), Thread: N (NPT), Port Size: 01 (1/8), Accessory 1: None, Pressure Gauge Angle: G1 (0°), Accessory 2: H (Set Nut), Option: 1NYZ (Combination of 1 + N + Y + Z), B: B
Size: 20 (1/8), Reverse Flow Function: K (Regulator w/Backflow Mechanism), Thread: N (NPT), Port Size: 01 (1/8), Accessory 1: None, Pressure Gauge Angle: G1 (0°), Accessory 2: None, Option: 1NYZ (Combination of 1 + N + Y + Z), B: B
Size: 20 (1/8), Reverse Flow Function: Regulator, Standard, Thread: N (NPT), Port Size: 01 (1/8), Accessory 1: None, Pressure Gauge Angle: G1 (0°), Accessory 2: None, Option: 1NYZ (Combination of 1 + N + Y + Z), B: B
Special Applications: Clean Series, Body Size: 60, Reverse Flow: No, Thread: NPT, Port Size: 10 [1 (Size 50, 60)], Accessory, Not Attached: None, Option: N+Z
Special Applications: Clean Series, Body Size: 60, Reverse Flow: No, Thread: NPT, Port Size: 10 [1 (Size 50, 60)], Accessory, Not Attached: None, Option: Nameplate/Caution Plate for Bowl in Imperial Units
Special Applications: 10-AR (Clean Series), Body Size: 60, Reverse Flow: No, Thread: N (NPT), Port Size: 10 [1 (Size 50, 60)], Accessory, Not Attached: None, Option: Z (Nameplate/Caution Plate for Bowl in Imperial Units )
Special Applications: 10-AR (Clean Series), Body Size: 60, Reverse Flow: No, Thread: N (NPT), Port Size: 10 [1 (Size 50, 60)], Accessory, Not Attached: None, Option: NZ (N+Z)
Special Applications: 10-AR (Clean Series), Body Size: 20, Reverse Flow: No, Thread: N (NPT), Port Size: 01 [1/8 (Size 20)], Accessory, Not Attached: None, Option: 1NYZ (1+N+Y+Z)
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: None, Option: 1NYZ (1+N+Y+Z)
Special Applications: 10-AR (Clean Series), Body Size: 40, Reverse Flow: No, Thread: N (NPT), Port Size: 06 [3/4 (Size 40, 50)], Accessory, Not Attached: None, Option: 1NYZ (1+N+Y+Z)
Special Applications: 10-AR (Clean Series), Body Size: 40, Reverse Flow: No, Thread: N (NPT), Port Size: 04 [1/2 (Size 40)], Accessory, Not Attached: None, Option: 1NYZ (1+N+Y+Z)
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