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: G2 (90°), 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: 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: 1Z (0.02~0.2MPa Setting+NamePlate & Gauge w/PSI), B: B

Size/Valve Type: 6 (25A, N.C.), Body/Port/Orifice: K (C37; Port 1;, Orifice 25), Voltage/Electrical Entry: G (24VDC, DIN Terminal w/Surge Voltage Suppressor), Other Voltages and Electrical Options: None, Other Options: B (NPT Thread), Bracket: XB (w/Bracket), Rotation Angle: B (180°)

Size/Valve Type: B (15A, N.O.), Body/Port/Orifice: F (C37; Port 1/2; Orifice 15), Voltage/Electrical Entry: Z (Other Voltages), Other Voltages and Electrical Options: 2C (w/Light, Class H, 110VAC, DIN Terminal w/Surge Voltage Suppressor), Other Options: B (NPT Thread)

Size/Valve Type: B (15A, N.O.), Body/Port/Orifice: F (C37; Port 1/2; Orifice 15), Voltage/Electrical Entry: Z (Other Voltages), Other Voltages and Electrical Options: 2M (w/Light, Class H, 110VAC, Conduit Terminal w/Surge Voltage Suppressor), Other Options: B (NPT Thread)

SI Unit: 0 (w/o SI Unit), Stations: 5 Stations, SUP/EXH Block Mounting: B (Both Sides 2~16 Stations), Pilot: S (Internal Pilot, Built-in Silencer), A, B Port: C6 (ø6 One-touch Fitting), Mounting Method: D0 (DIN Rail Mount w/o DIN Rail)

SI Unit: 0 (w/o SI Unit), Stations: 10 Stations, SUP/EXH Block Mounting: B (Both Sides 2~16 Stations), Pilot: S (Internal Pilot, Built-in Silencer), A, B Port: C4 (ø4 One-touch Fitting), Mounting Method: D0 (DIN Rail Mount w/o DIN Rail)

SI Unit: 0 (w/o SI Unit), Stations: 5 Stations, SUP/EXH Block Mounting: B (Both Sides 2~16 Stations), Pilot: S (Internal Pilot, Built-in Silencer), A, B Port: C6 (ø6 One-touch Fitting), Mounting Method: D0 (DIN Rail Mount w/o DIN Rail)

SI Unit: 0 (w/o SI Unit), Stations: 2 Stations, SUP/EXH Block Mounting: B (Both Sides 2~16 Stations), Pilot: S (Internal Pilot, Built-in Silencer), A, B Port: C6 (ø6 One-touch Fitting), Mounting Method: D0 (DIN Rail Mount w/o DIN Rail)

Model: 31, Orifice: 2.2mm, Style: COM., Manifold, Option: For Other Fluids, Consult SMC -- Seals: EPDM, Body: Brass, Coil: Class B, Suffix: Standard, Voltage: 110VAC 50/60HZ, Electrical Entry: DIN w/o Connector, Surge Suppressor: None, Rectifier: AC Class B Coil w/Full-wave Rectifier

Model: 31, Orifice: 3mm, Style: COM., Manifold, Option: For Other Fluids, Consult SMC -- Seals: EPDM, Body: Brass, Coil: Class B, Suffix: Standard, Voltage: 110VAC 50/60HZ, Electrical Entry: DIN w/o Connector, Surge Suppressor: None, Rectifier: AC Class B Coil w/Full-wave Rectifier

Model: 31, Orifice: 1.5mm, Style: N.C., Single Unit, Option: C37, Seals: NBR, Class B, Suffix: Standard, Port Size: 1/8, Thread: NPTF, Voltage: 110VAC 50/60HZ, Electrical Entry: DIN Terminal, Surge Suppressor: w/Light, Rectifier: AC Class B Coil w/Full-wave Rectifier, Bracket: -

Model: 31, Orifice: 1.5mm, Style: COM, Single Unit, Option: C37, Seals: NBR, Class B, Suffix: Standard, Port Size: 1/8, Thread: Rc, Voltage: 110VAC 50/60HZ, Electrical Entry: DIN Terminal, Surge Suppressor: w/Light, Rectifier: AC Class B Coil w/Full-wave Rectifier, Bracket: Bracket

Model: 31, Orifice: 1.5mm, Style: COM, Single Unit, Option: C37, Seals: NBR, Class B, Suffix: Standard, Port Size: 1/8, Thread: NPT, Voltage: 110VAC 50/60HZ, Electrical Entry: DIN Terminal, Surge Suppressor: w/Light, Rectifier: AC Class B Coil w/Full-wave Rectifier, Bracket: Bracket

Model: 31, Orifice: 1.5mm, Style: COM, Single Unit, Option: C37, Seals: NBR, Class B, Suffix: Standard, Port Size: 1/8, Thread: NPTF, Voltage: 110VAC 50/60HZ, Electrical Entry: DIN Terminal, Surge Suppressor: w/Light, Rectifier: AC Class B Coil w/Full-wave Rectifier, Bracket: -

Model: 31, Orifice: 1.5mm, Style: COM, Single Unit, Option: C37, Seals: NBR, Class B, Suffix: Standard, Port Size: 1/8, Thread: NPTF, Voltage: 110VAC 50/60HZ, Electrical Entry: DIN Terminal, Surge Suppressor: w/Light, Rectifier: AC Class B Coil w/Full-wave Rectifier, Bracket: Bracket

Model: 31, Orifice: 1.5mm, Style: COM, Single Unit, Option: C37, Seals: NBR, Class B, Suffix: Standard, Port Size: 1/4, Thread: Rc, Voltage: 100VAC 50/60HZ, Electrical Entry: DIN Terminal, Surge Suppressor: w/Light, Rectifier: AC Class B Coil w/Full-wave Rectifier, Bracket: Bracket

Model: 31, Orifice: 2.2mm, Style: N.C., Single Unit, Option: C37, Seals: NBR, Class B, Suffix: Standard, Port Size: 1/8, Thread: NPT, Voltage: 110VAC 50/60HZ, Electrical Entry: DIN Terminal, Surge Suppressor: w/Light, Rectifier: AC Class B Coil w/Full-wave Rectifier, Bracket: -

Model: 31, Orifice: 2.2mm, Style: N.C., Single Unit, Option: C37, Seals: NBR, Class B, Suffix: Standard, Port Size: 1/4, Thread: Rc, Voltage: 110VAC 50/60HZ, Electrical Entry: DIN Terminal, Surge Suppressor: w/Light, Rectifier: AC Class B Coil w/Full-wave Rectifier, Bracket: -

Model: 31, Orifice: 2.2mm, Style: N.C., Single Unit, Option: C37, Seals: NBR, Class B, Suffix: Standard, Port Size: 1/4, Thread: G, Voltage: 110VAC 50/60HZ, Electrical Entry: DIN Terminal, Surge Suppressor: w/Light, Rectifier: AC Class B Coil w/Full-wave Rectifier, Bracket: -