Model: 31, Orifice: 3 (3mm), Style: 0 (N.C., Single Unit), Option: C37, Seals: NBR, Class B, Suffix: Standard, Port Size: 02 (1/4), Thread: T (NPTF), Voltage: 7 (240VAC 50/60HZ), Electrical Entry: C (Conduit), Surge Suppressor: Non, Rectifier: R (AC Class B Coil w/Full-wave Rectifier)

Model: 32, Orifice: 4 (4mm), Style: 0 (N.C., Single Unit), Option: G (Stainless Steel, Seals: NBR, Class B), Suffix: Standard, Port Size: 02 (1/4), Thread: N (NPT), Voltage: 7 (240VAC 50/60HZ), Electrical Entry: G (Grommet), Surge Suppressor: Non, Rectifier: R (AC Class B Coil w/Full-wave Rectifier), Bracket: B (Bracket)

Model: 33, Orifice: 2 (2.2mm), Style: 4 (COM, Single Unit), Option: A (C37, Seals: FKM, Class B), Suffix: Z (Oil-free), Port Size: 02 (1/4), Thread: N (NPT), Voltage: 7 (240VAC 50/60HZ), Electrical Entry: D (DIN Terminal), Surge Suppressor: Non, Rectifier: R (AC Class B Coil w/Full-wave Rectifier)

Model: 33, Orifice: 3 (3mm), Style: 4 (COM, Single Unit), Option: S (C37/Cu, Seal: Poppet-FFKM, Fixed-PTFE, Class H, Steam), Suffix: Standard, Port Size: 02 (1/4), Thread: N (NPT), Voltage: 7 (240VAC 50/60HZ), Electrical Entry: G (Grommet), Surge Suppressor: Non, Rectifier: None (for DC or AC Class H Coil), Bracket: B (Bracket)

Model: 33, Orifice: 4 (4mm), Style: 4 (COM, Single Unit), Option: E (C37/Cu, Seals: EPDM, Class H), Suffix: Standard, Port Size: 02 (1/4), Thread: N (NPT), Voltage: 7 (240VAC 50/60HZ), Electrical Entry: C (Conduit), Surge Suppressor: Non, Rectifier: None (for DC or AC Class H Coil)

Model: 33, Orifice: 4 (4mm), Style: 4 (COM, Single Unit), Option: E (C37/Cu, Seals: EPDM, Class H), Suffix: Standard, Port Size: 02 (1/4), Thread: N (NPT), Voltage: 7 (240VAC 50/60HZ), Electrical Entry: C (Conduit), Surge Suppressor: Non, Rectifier: None (for DC or AC Class H Coil), Bracket: B (Bracket)

Stations: 02 (2 Stations), Piping: D (U Side: Closed; D Side: Open), Thread Type: Rc, Supply Unit Components: S (w/Flow Adj. Valve; Stop Valve: None), Return Unit Flow Switch: 7 (Integrated Display), Return Unit Flow Range: 04 (0.5 to 4 L/min), Return Unit Components: Flow Adj.

Stations: 02 (2 Stations), Piping: D (U Side: Closed; D Side: Open), Thread Type: N (NPT), Supply Unit Components: S (w/Flow Adj. Valve; Stop Valve: None), Return Unit Flow Switch: 7 (Integrated Display), Return Unit Flow Range: 40 (5 to 40 L/min), Return Unit Components: Flow Adj.

Stations: 02 (2 Stations), Piping: D (U Side: Closed; D Side: Open), Thread Type: N (NPT), Supply Unit Components: W (w/Flow Adj. Valve; w/Stop Valve), Return Unit Flow Switch: 7 (Integrated Display), Return Unit Flow Range: 04 (0.5 to 4 L/min), Return Unit Components: Flow Adj.

Stations: 02 (2 Stations), Piping: D (U Side: Closed; D Side: Open), Thread Type: Rc, Supply Unit Components: S (w/Flow Adj. Valve; Stop Valve: None), Return Unit Flow Switch: 7 (Integrated Display), Return Unit Flow Range: 20 (2 to 16 L/min), Return Unit Components: Flow Adj.

Stations: 02 (2 Stations), Piping: B (U Side: Open; D Side: Open), Thread Type: N (NPT), Supply Unit Components: P (w/o Flow Adj. Valve; w/Stop Valve), Return Unit Flow Switch: 7 (Integrated Display), Return Unit Flow Range: 04 (0.5 to 4 L/min), Return Unit Components: S (w/Flow Adj.

Stations: 02 (2 Stations), Piping: D (U Side: Closed; D Side: Open), Thread Type: F (G), Supply Unit Components: W (w/Flow Adj. Valve; w/Stop Valve), Return Unit Flow Switch: 7 (Integrated Display), Return Unit Flow Range: 20 (2 to 16 L/min), Return Unit Components: Flow Adj.

Stations: 02 (2 Stations), Piping: B (U Side: Open; D Side: Open), Thread Type: N (NPT), Supply Unit Components: Flow Adj. Valve: None; Stop Valve: None, Return Unit Flow Switch: 7 (Integrated Display), Return Unit Flow Range: 04 (0.5 to 4 L/min), Return Unit Components: S (w/Flow Adj.

Stations: 02 (2 Stations), Piping: B (U Side: Open; D Side: Open), Thread Type: N (NPT), Supply Unit Components: Flow Adj. Valve: None; Stop Valve: None, Return Unit Flow Switch: 7 (Integrated Display), Return Unit Flow Range: 20 (2 to 16 L/min), Return Unit Components: S (w/Flow Adj.

Stations: 02 (2 Stations), Piping: D (U Side: Closed; D Side: Open), Thread Type: N (NPT), Supply Unit Components: S (w/Flow Adj. Valve; Stop Valve: None), Return Unit Flow Switch: 7 (Integrated Display), Return Unit Flow Range: 20 (2 to 16 L/min), Return Unit Components: P (w/o Flow Adj.

Stations: 02 (2 Stations), Piping: D (U Side: Closed; D Side: Open), Thread Type: N (NPT), Supply Unit Components: W (w/Flow Adj. Valve; w/Stop Valve), Return Unit Flow Switch: 7 (Integrated Display), Return Unit Flow Range: 20 (2 to 16 L/min), Return Unit Components: P (w/o Flow Adj.

Stations: 02 (2 Stations), Piping: D (U Side: Closed; D Side: Open), Thread Type: Rc, Supply Unit Components: S (w/Flow Adj. Valve; Stop Valve: None), Return Unit Flow Switch: 7 (Integrated Display), Return Unit Flow Range: 20 (2 to 16 L/min), Return Unit Components: P (w/o Flow Adj.

Stations: 02 (2 Stations), Piping: D (U Side: Closed; D Side: Open), Thread Type: N (NPT), Supply Unit Components: S (w/Flow Adj. Valve; Stop Valve: None), Return Unit Flow Switch: 7 (Integrated Display), Return Unit Flow Range: 20 (2 to 16 L/min), Return Unit Components: P (w/o Flow Adj.

Stations: 02 (2 Stations), Piping: B (U Side: Open; D Side: Open), Thread Type: N (NPT), Supply Unit Components: P (w/o Flow Adj. Valve; w/Stop Valve), Return Unit Flow Switch: 7 (Integrated Display), Return Unit Flow Range: 20 (2 to 16 L/min), Return Unit Components: S (w/Flow Adj.

Stations: 02 (2 Stations), Piping: B (U Side: Open; D Side: Open), Thread Type: N (NPT), Supply Unit Components: P (w/o Flow Adj. Valve; w/Stop Valve), Return Unit Flow Switch: 7 (Integrated Display), Return Unit Flow Range: 20 (2 to 16 L/min), Return Unit Components: W (w/Flow Adj.