 
Model: 51 (Bottom Ported), Connector Type: P (Flat Ribbon Cable, 26 Pins), Connector Entry Direction: 2 (Lateral), Wiring Specification: All Double Wiring, Valve Stations: 7 Stations, P,E Port Location: D Side, A,B Port Size: M5, Thread: T (NPTF)
Model: 51 (Bottom Ported), Connector Type: F (D-sub Connector, 25 Pins), Connector Entry Direction: 1 (Upward), Wiring Specification: All Double Wiring, Valve Stations: 10 Stations, P,E Port Location: D Side, A,B Port Size: M5, Thread: T (NPTF)
Model: 51 (Bottom Ported), Connector Type: PG (Flat Ribbon Cable, 20 Pins), Connector Entry Direction: 1 (Upward), Wiring Specification: All Double Wiring, Valve Stations: 6 Stations, P,E Port Location: D Side, A,B Port Size: M5, Thread: T (NPTF)
Model: 51 (Bottom Ported), Connector Type: P (Flat Ribbon Cable, 26 Pins), Connector Entry Direction: 1 (Upward), Wiring Specification: All Double Wiring, Valve Stations: 6 Stations, P,E Port Location: D Side, A,B Port Size: M5, Thread: T (NPTF)
Model: 51 (Bottom Ported), Connector Type: P (Flat Ribbon Cable, 26 Pins), Connector Entry Direction: 1 (Upward), Wiring Specification: All Double Wiring, Valve Stations: 7 Stations, P,E Port Location: D Side, A,B Port Size: M5, Thread: T (NPTF)
Model: 51 (Bottom Ported), Connector Type: P (Flat Ribbon Cable, 26 Pins), Connector Entry Direction: 1 (Upward), Wiring Specification: All Double Wiring, Valve Stations: 8 Stations, P,E Port Location: D Side, A,B Port Size: M5, Thread: T (NPTF)
Piping: 32P (Base Mounted Common SUP Common EXH), Stations: 5 Stations, A, B Port: M5 (Base Mounted M5X0.8), P R Port Thread: T (NPTF)
This is a legacy product, and replaced byZSE20B-T-M5-W-X510 ZSE40/50/60 VACUUM SWITCH. SWITCH. VACUUM SERIES. ZSE40/50/60 1/8 PORTED. .35273 lb. JC.
Piping: 32P (Base Mounted Common SUP Common EXH), Stations: 6 Stations, A, B Port: M5 (Base Mounted M5X0.8), P R Port Thread: T (NPTF)
Type, A,B Port Size: Base Mounted Valve, Thread: Rc (or No Selection in the Case of M5 or One-touch Fittings), Mounting Option: Mounting Screw, Round Head Combination Screw
), A,B Port Size: Base Mounted Valve, Thread: Rc (or No Selection in the Case of M5 or One-touch Fittings), Mounting Option: Mounting Screw, Round Head Combination Screw
, A,B Port Size: C4 (ΓΈ4 One-touch Fitting), Thread: Rc (or No Selection in the Case of M5 or One-touch Fittings), Mounting Option: Mounting Screw, Round Head Combination Screw
Piping: 32P (Base Mounted Common SUP Common EXH), Stations: 8 Stations, A, B Port: M5 (Base Mounted M5X0.8), P R Port Thread: T (NPTF)
, A,B Port Size: Base Mounted Valve, Thread: Rc (or No Selection in the Case of M5 or One-touch Fittings), Mounting Option: Mounting Screw, Round Head Combination Screw
Magnet: D (Built-in Magnet), Mounting: T (Head Trunnion), Type: N (Rubber Bumper), Bore: 50mm, Port Thread Type: Rc (or M5, Depending on Style, Bore Size, and Thread Combination), Stroke: 100mm, Thread: Male Rod End, Suffix for Cylinder: w/o Rod Boot, Pivot Bracket: N (Pivot Bracket not Assembled), Rod End Bracket: None, Auto Switch: M9B--Solid State, Gen.
Magnet: D (Built-in Magnet), Mounting: T (Head Trunnion), Type: N (Rubber Bumper), Bore: 63mm, Port Thread Type: Rc (or M5, Depending on Style, Bore Size, and Thread Combination), Stroke: 25mm, Thread: Male Rod End, Suffix for Cylinder: w/o Rod Boot
Magnet: D (Built-in Magnet), Mounting: T (Head Trunnion), Type: N (Rubber Bumper), Bore: 63mm, Port Thread Type: Rc (or M5, Depending on Style, Bore Size, and Thread Combination), Stroke: 100mm, Thread: Male Rod End, Suffix for Cylinder: w/o Rod Boot, Pivot Bracket: N (Pivot Bracket not Assembled), Rod End Bracket: W (Double Knuckle Joint), Auto Switch: M9B--Solid State, Gen.
Body Size: 40, Thread: Rc: Size 20, 25, 30, 40; M5: Size 10, Port Size: 04 (1/2), Option: DG (D + G), Attachment: TV (T + V), Semi-Standard 1: Standard, Semi-Standard 2: Standard
Body Size: 30, Thread: Rc: Size 20, 25, 30, 40; M5: Size 10, Port Size: 02 (1/4), Option: D (N.O. Float Type Auto Drain), Attachment: ST (S + T), Semi-Standard 1: 2 (Metal Bowl), Semi-Standard 2: Standard
Magnet: D (Built-in Magnet), Mounting: T (Head Trunnion), Type: A (Air Cushion), Bore: 32mm, Port Thread Type: Rc (or M5, Depending on Style, Bore Size, and Thread Combination), Stroke: 75mm, Thread: Male Rod End, Suffix for Cylinder: w/o Rod Boot, Pivot Bracket: N (Pivot Bracket not Assembled), Rod End Bracket: W (Double Knuckle Joint), Auto Switch: A93--Reed, DC Volt, AC Volt, LED, Horizontal