Centrifugal Wi+ Series Pump

An Inducer is an axial flow impeller with blades that wrap in a helix around a central hub.

The inducer pump is the alternative to changing the process design when NPSH availability is low. The inducer boosts the inlet pressure, and the risk of cavitation is correspondingly reduced (the NPSH required typically drops by 50-70%). When the risk of cavitation disappears, so does the risk of a large number of operational disturbances that would otherwise result – such as excessive noise, energy loss, product damage and unnecessary wear on the pump. Low suction head is a common “problem” in miscellaneous applications, e.g. when pumping products with low boiling points or in processes that involve vacuums.

The Wi+ is unique among inducer pumps, since the NPSH requirement is kept to a minimum throughout its entire operating range. The inducer further enables the Wi+ pump to handle viscous or gaseous products beyond the range of other centrifugal pumps.Wi+ pumps are 3-A (optional) certified.

Model	Inlet Size		Outlet Size		Maximum Impeller Size		Maximum Capacity (GPM)		Maximum Head (FT)		Maximum Discharge Pressure	Maximum Operating Pressure
Model	inch	mm	inch	mm	inch	mm	1750 rpm	3500 rpm	1750 rpm	3500 rpm	260 psi (18 bar): W+10/8, W+22/20, W+30/80, W+35/55, W+35/35, W+110/130 200 psi (14 bar): W+25/210, W+30/120, W+50/8, W+55/35, W+55/60, W+60/110, W+65/350, W+70/40, W+80/80 Optional: Heavy duty clamping ring, increasing max. outlet pressure to 360 psi (25 bar): W+30/120, W+55/35, W+55/60, W+60/110, W+70/40) 290 psi (20 bar): W+80/80	203°F (95°C) as standard. >203°F, please contact SPX FLOW
10/8	1.5	38	1	25	4.3	110	32	65	17	68
22/20	2	51	2	51	5.6	142	85	175	34	138
25/210	6	152	4	102	11.4	290	1610	–	134	–
30/80	4	102	3	76	76	76	315	650	43	171
30/120	4	102	3	76	6.9	175	410	810	47	190
35/35	2.5	65	2	51	6.9	175	142	280	49	198
35/55	3	3	2.5	65	7.1	180	230	465	50	200
50/8	1.5	38	1	1	7.9	200	42	85	68	275
55/35	2.5	65	1.5	38	8.3	210	140	245	76	302
55/60	3	76	2	51	8.7	220	305	615	78	315
60/110	4	102	3	76	9.1	230	475	975	90	359
65/350	6	152	4	102	10.2	260	1250	2300	100	400
70/40	2.5	65	1.5	38	9.4	240	110	235	98	390
80/80	3	76	2	51	10	255	310	625	112	450

Materials		Port Connections	Motor
Casing	SS 316L	S-Line connections are standard. Bevel seat, I-line, ISO and other standard fittings are available.	TE FC or Washdown enclosures available. Energy-efficient, Chem-duty, Explosion Proof and stainless steel also available, as well as single phase or three phase, 60 or 50 Hertz.
Front Cover	SS 316L
Impeller	SS 316L
Air Screw and Recirculation Pipe	SS 316L
Back Plate	SS 316L
Shaft	SS 316L
Clamp Rings	SS 304
Adaptor	SS 304
Support	SS 304
Shaft Seal	Standard: Carbon/Silicon Carbide Optional: Silicon Carbide/Silicon Carbide
Elastomers	Standard: FKM Optional: EPDM

Document	Downloads
W+ Series – NEMA – Centrifugal Pumps Brochure	PDF

Product Contact Form

Please fill in the contact form below to reach out to our expert service team about all your product needs.