Model: 31, Orifice: 3 (3mm), Style: 0 (N.C., Single Unit), Option: C37, Seals: NBR, Class B, Suffix: Standard, Port Size: 01 (1/8), Thread: F (G), Voltage: 3 (110VAC 50/60HZ), Electrical Entry: D (DIN Terminal), Surge Suppressor: L (w/Light), Rectifier: R (AC Class B Coil w/Full-wave Rectifier)

Model: 31, Orifice: 1 (1.5mm), Style: 4 (COM, Single Unit), Option: C37, Seals: NBR, Class B, Suffix: Standard, Port Size: 01 (1/8), Thread: T (NPTF), Voltage: 3 (110VAC 50/60HZ), Electrical Entry: G (Grommet), Surge Suppressor: Non, Rectifier: R (AC Class B Coil w/Full-wave Rectifier), Bracket: B (Bracket)

Model: 31, Orifice: 1 (1.5mm), Style: 4 (COM, Single Unit), Option: M (SS, Seals: FKM, Class B, Oil-free), Suffix: Standard, Port Size: 01 (1/8), Thread: N (NPT), Voltage: 3 (110VAC 50/60HZ), Electrical Entry: C (Conduit), Surge Suppressor: Non, Rectifier: R (AC Class B Coil w/Full-wave Rectifier)

Model: 31, Orifice: 3 (3mm), Style: 0 (N.C., Single Unit), Option: C37, Seals: NBR, Class B, Suffix: Standard, Port Size: 01 (1/8), Thread: T (NPTF), Voltage: 3 (110VAC 50/60HZ), Electrical Entry: C (Conduit), Surge Suppressor: Non, Rectifier: R (AC Class B Coil w/Full-wave Rectifier), Bracket: B (Bracket)

Function: 1 (Normally Closed), Piping: 4 (Base Mounted), Body Option: R (External Pilot), Specifications: Standard, Voltage: 5 (24VDC), Lead Wire: L (L Plug Connector w/Lead Wire 0.3m), Surge Suppressor: None, Manual Override: Non-locking Push Style, Port Size: 01 (Base Mounted w/Sub-plate 1/8, Body Ported 1/8)

Function: 1 (Normally Closed), Piping: 4 (Base Mounted), Body Option: R (External Pilot), Specifications: Standard, Voltage: 6 (12VDC), Lead Wire: LN (L Plug Connector w/o Lead Wire), Surge Suppressor: None, Manual Override: Non-locking Push Style, Port Size: 01 (Base Mounted w/Sub-plate 1/8, Body Ported 1/8)

Function: 1 (Normally Closed), Piping: 2 (Body Ported), Body Option: R (External Pilot), Specifications: Standard, Voltage: 5 (24VDC), Lead Wire: G (Grommet Lead Wire 0.3m), Surge Suppressor: None, Manual Override: Non-locking Push Style, Port Size: 01 (Base Mounted w/Sub-plate 1/8, Body Ported 1/8), Thread: F (G)

Function: 1 (Normally Closed), Piping: 2 (Body Ported), Body Option: R (External Pilot), Specifications: Standard, Voltage: 5 (24VDC), Lead Wire: G (Grommet Lead Wire 0.3m), Surge Suppressor: None, Manual Override: Non-locking Push Style, Port Size: 01 (Base Mounted w/Sub-plate 1/8, Body Ported 1/8), Thread: N (NPT)

Function: 1 (Normally Closed), Piping: 2 (Body Ported), Body Option: R (External Pilot), Specifications: Standard, Voltage: 5 (24VDC), Lead Wire: G (Grommet Lead Wire 0.3m), Surge Suppressor: None, Manual Override: Non-locking Push Style, Port Size: 01 (Base Mounted w/Sub-plate 1/8, Body Ported 1/8), Thread: T (NPTF)

Function: 1 (Normally Closed), Piping: 4 (Base Mounted), Body Option: R (External Pilot), Specifications: Standard, Voltage: 5 (24VDC), Lead Wire: M (M Plug Connector w/Lead Wire 0.3m), Surge Suppressor: None, Manual Override: Non-locking Push Style, Port Size: 01 (Base Mounted w/Sub-plate 1/8, Body Ported 1/8)

Function: 1 (Normally Closed), Piping: 4 (Base Mounted), Body Option: R (External Pilot), Specifications: Standard, Voltage: 5 (24VDC), Lead Wire: D (DIN Connector w/Connector), Surge Suppressor: None, Manual Override: Non-locking Push Style, Port Size: 01 (Base Mounted w/Sub-plate 1/8, Body Ported 1/8), Thread: N (NPT)

Function: 1 (Normally Closed), Piping: 4 (Base Mounted), Body Option: R (External Pilot), Specifications: Standard, Voltage: 5 (24VDC), Lead Wire: D (DIN Connector w/Connector), Surge Suppressor: Z (Light & Surge Suppressor), Manual Override: Non-locking Push Style, Port Size: 01 (Base Mounted w/Sub-plate 1/8, Body Ported 1/8)

Function: 1 (Normally Closed), Piping: 2 (Body Ported), Body Option: R (External Pilot), Specifications: Standard, Voltage: 5 (24VDC), Lead Wire: D (DIN Connector w/Connector), Surge Suppressor: Z (Light & Surge Suppressor), Manual Override: Non-locking Push Style, Port Size: 01 (Base Mounted w/Sub-plate 1/8, Body Ported 1/8)

Function: 1 (Normally Closed), Piping: 4 (Base Mounted), Body Option: R (External Pilot), Specifications: Standard, Voltage: 5 (24VDC), Lead Wire: G (Grommet Lead Wire 0.3m), Surge Suppressor: Z (Light & Surge Suppressor), Manual Override: Non-locking Push Style, Port Size: 01 (Base Mounted w/Sub-plate 1/8, Body Ported 1/8)

Function: 1 (Normally Closed), Piping: 2 (Body Ported), Body Option: R (External Pilot), Specifications: Standard, Voltage: 5 (24VDC), Lead Wire: D (DIN Connector w/Connector), Surge Suppressor: None, Manual Override: Non-locking Push Style, Port Size: 01 (Base Mounted w/Sub-plate 1/8, Body Ported 1/8), Thread: F (G)

Function: 2 (Normally Open), Piping: 2 (Body Ported), Body Option: R (External Pilot), Specifications: Standard, Voltage: 5 (24VDC), Lead Wire: G (Grommet Lead Wire 0.3m), Surge Suppressor: None, Manual Override: Non-locking Push Style, Port Size: 01 (Base Mounted w/Sub-plate 1/8, Body Ported 1/8), Thread: N (NPT)

Body Size: 20, Thread: Rc (Rc: for Sizes 20, 25, 30, 40; M5: for Size 10), Port Size: 01 (1/8), Option: Standard, Attachment: V (3-Port Valve for Residual Pressure Release; Mounting: AF+AR+V), Semi-Standard 1: 2 (Metal Bowl), Semi-Standard 2: R (Flow Direction: Right to Left)

Body Size: 20, Thread: N (NPT), Port Size: 01 (1/8), Mounting: None, Semi-Standard, Body Size 10: R (Flow Direction: Right to Left), Semi-Standard, Body Size 20: Z (Name Plate, Caution Plate for Bowl in Imperial Units: psi, °F), Semi-Standard, Body Size 30, 40, 50 & 60: Standard

Body Size: 20, Thread: N (NPT), Port Size: 01 (1/8), Option: G (For Sizes 10, 20, 30, 40 Round Type Pressure Gauge w/Limit Indicator; For For Size 10: Round Type Pressure Gauge w/o Limit Indicator ), Semi-Standard 1: C (Bowl Guard), Semi-Standard 2: RZ (R + Z)

Body Size: 20, Thread: N (NPT), Port Size: 01 (1/8), Option: G (for Sizes 20, 25, 30, 40 Round Type Pressure Gauge w/Limit Indicator; for Size10: Round Type Pressure Gauge w/o Limit Indicator), Attachment: Standard, Semi-Standard 1: 2 (Metal Bowl), Semi-Standard 2: RZ (R + Z)