Stations: 04 (4 Stations), Piping: U (U Side: Open; D Side: Closed), Thread Type: N (NPT), Supply Unit Components: W (w/Flow Adj. Valve; w/Stop Valve), Return Unit Flow Range: 40 (5 to 40 L/min), Supply/Return Port Size: 04 (1/2)
Stations: 04 (4 Stations), Piping: D (U Side: Closed; D Side: Open), Thread Type: N (NPT), Supply Unit Components: P (w/o Flow Adj. Valve; w/Stop Valve), Return Unit Flow Range: 40 (5 to 40 L/min), Supply/Return Port Size: 04 (1/2)
However, you may want to consider the HEP500-04 series ejector type liquid collector. The HEP500-04 series catalog can be found here.
Stations: 04 (4 Stations), Piping: B (U Side: Open; D Side: Open), Thread Type: N (NPT), Supply Unit Components: S (w/Flow Adj. Valve; Stop Valve: None), Return Unit Flow Range: 20 (2 to 16 L/min), Supply/Return Port Size: 04 (1/2)
Port Size: 04 (Rc1/2), Mesh: 2-X204 (50 Mesh)
Port Size: 04 (Rc1/2), Mesh: 3-X204 (25 Mesh)
Fitting: 11 (Size 1), Tubing Size: 04 (ø4 x ø3)
Body Size: 450C, Thread: Rc, Port Size: 04 (1/2)
Mounting: C (Single Clevis), Applicable Bore: 04 (for 40mm Bore)
Mounting: D (Double Clevis), Applicable Bore: 04 (for 40mm Bore)
Type: D (Double), Applicable Bore: 04 [150 (1 1/2")]
Type: S (Single), Applicable Bore: 04 [150 (1 1/2")]
VER: VER4001 (External Pilot Type), Port Size: 04 (1/2)
VER: VER4000 (Internal Pilot Type), Port Size: 04 (1/2)
Size: 6mm, Thread: Rc(PT), Port Size: 04 (1/2)
Size: 6mm, Thread: N (NPT), Port Size: 04 (1/2)
Size: 402, Thread: N (NPT), Port Size: 04 (1/2)