Body Size: 20, Backflow: K (w/Backflow Function), Thread: N (NPT), Port Size: 02 (1/4), Options: E3 (Output: PNP Output; Electrical Entry: Wiring Bottom Entry), Set Pressure: 1 (0.02 to 0.2 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)

The ARP is a modular style, direct operated precision regulator.  A locking adjustment knob allows the pressure to be set, and then locked to prevent accidental setting changes. The ARP20/30/40 series is available with a back flow function that exhausts the air pressure in the outlet side reliably and quickly.  Special applications include (10-) clean room compliant, (20-)copper-free, fluorine-free

Special Applications: 21- (Clean-room, Copper-free, Fluorine-free, Silicon-free), Size: 20, Backflow Function: K (Backflow Function), Thread: N (NPT), Port Size: 02 (1/4), Accessory: BG (B+G), Specifications: 1 (0.005 to 0.2 MPa Setting), Pressure Unit: Z (Name plate & Pressure Gauge in Imperial Units: psi)

Special Applications: 10- (Clean Room Compliant), Size: 20, Backflow Function: K (Backflow Function), Thread: N (NPT), Port Size: 01 (1/8), Accessory: BG (B+G), Specifications: 1 (0.005 to 0.2 MPa Setting), Pressure Unit: Z (Name plate & Pressure Gauge in Imperial Units: psi)

Special Applications: 10- (Clean Room Compliant), Size: 20, Backflow Function: K (Backflow Function), Thread: N (NPT), Port Size: 02 (1/4), Accessory: BG (B+G), Specifications: 1 (0.005 to 0.2 MPa Setting), Pressure Unit: Z (Name plate & Pressure Gauge in Imperial Units: psi)

Special Applications: 10- (Clean Room Compliant), Size: 20, Backflow Function: K (Backflow Function), Thread: N (NPT), Port Size: 01 (1/8), Accessory: BE3 (B+E3), Specifications: 1 (0.005 to 0.2 MPa Setting), Pressure Unit: Z (Name plate & Pressure Gauge in Imperial Units: psi)

Special Applications: 10- (Clean Room Compliant), Size: 20, Backflow Function: K (Backflow Function), Thread: N (NPT), Port Size: 02 (1/4), Accessory: H (Set Nut for Panel Mount), Specifications: 1 (0.005 to 0.2 MPa Setting), Pressure Unit: Z (Name plate & Pressure Gauge in Imperial Units: psi)

Special Applications: Clean-room, Copper-free, Fluorine-free, Silicon-free, Size: 20, Backflow Function: Backflow Function, Thread: NPT, Port Size: 1/4, Accessory: B+G, Specifications: 0.005 to 0.2 MPa Setting, Pressure Unit: Name plate & Pressure Gauge in Imperial Units: psi

Special Applications: Clean Room Compliant, Size: 20, Backflow Function: Backflow Function, Thread: NPT, Port Size: 1/8, Accessory: B+G, Specifications: 0.005 to 0.2 MPa Setting, Pressure Unit: Name plate & Pressure Gauge in Imperial Units: psi

Special Applications: Clean Room Compliant, Size: 20, Backflow Function: Backflow Function, Thread: NPT, Port Size: 1/4, Accessory: B+G, Specifications: 0.005 to 0.2 MPa Setting, Pressure Unit: Name plate & Pressure Gauge in Imperial Units: psi

Special Applications: Clean Room Compliant, Size: 20, Backflow Function: Backflow Function, Thread: NPT, Port Size: 1/8, Accessory: B+E3, Specifications: 0.005 to 0.2 MPa Setting, Pressure Unit: Name plate & Pressure Gauge in Imperial Units: psi

Special Applications: Clean Room Compliant, Size: 20, Backflow Function: Backflow Function, Thread: NPT, Port Size: 1/4, Accessory: Set Nut for Panel Mount, Specifications: 0.005 to 0.2 MPa Setting, Pressure Unit: Name plate & Pressure Gauge in Imperial Units: psi

Special Applications: Clean Room Compliant, Size: 20, Backflow Function: Backflow Function, Thread: NPT, Port Size: 1/8, Accessory: Bracket, Specifications: 0.005 to 0.2 MPa Setting, Pressure Unit: Name plate & Pressure Gauge in Imperial Units: psi

Special Applications: Copper-free, Fluorine-free, Size: 20, Backflow Function: Backflow Function, Thread: NPT, Port Size: 1/8, Accessory: B+G, Specifications: 0.005 to 0.2 MPa Setting, Pressure Unit: Name plate & Pressure Gauge in Imperial Units: psi

Special Applications: 10- (Clean Room Compliant), Size: 20, Backflow Function: K (Backflow Function), Thread: N (NPT), Port Size: 01 (1/8), Accessory: B (Bracket), Specifications: 1 (0.005 to 0.2 MPa Setting), Pressure Unit: Z (Name plate & Pressure Gauge in Imperial Units: psi)

Body Size: 30, Thread: N (NPT), Port Size: 02 (1/4), Option: B (Assembly of a Bracket & Set Nuts), Semi-Standard: 1Z (1 + Z)

Body Size: 40, Thread: N (NPT), Port Size: 04 (1/2), Option: G (For Sizes 20, 25, 30, 40: Round Pressure Gauge w/Limit Indicator; For Size 10 Round Pressure Gauge w/o Limit Indicator), Semi-Standard: 1Z (1 + Z)

Body Size: 40, Thread: N (NPT), Port Size: 04 (1/2), Option: M (Round Pressure Gauge w/ Color Zone), Semi-Standard: 1Z (1 + Z)

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: G3 (180°), Accessory 2: H (Set Nut), Option: 1Z (0.02~0.2MPa Setting+NamePlate & Gauge w/PSI), B: B

Size: 20 (1/8), Reverse Flow Function: Regulator, Standard, Thread: N (NPT), Port Size: 01 (1/8), Accessory 1: B (Bracket), Pressure Gauge Angle: G1 (0°), Accessory 2: None, Option: 1Z (0.02~0.2MPa Setting+NamePlate & Gauge w/PSI), B: B