Centrifugal Ws+ Series Pump

The Ws+ uses a unique design that combines the abilities of most liquid ring pumps with the efficiencies of the W+ centrifugal series. As a result customers can now handle entrained air and lift requirements with lower horsepower, less noise and at lower cost.

Reduce your noise level and benefit from the amazing development in self-priming. The self-priming Ws+ is designed to handle Clean In Place (CIP) return and other fluids with entrained air and foam. The unique design reduces the energy consumption and noise of traditional liquid ring pumps by using a high efficiency impeller that can be trimmed to match a specific duty. The Ws+ employs a built in eccentric air screw to form the liquid ring required for its self-priming capability.

20-90% more efficient than other liquid rings due to improved fluid flow through pump.
Performance optimized by matching impeller size to duty.
Low noise level: Due to its hydraulic design the noise level of the Ws+ is significantly lower than traditional liquid ring pumps.
3-A (optional) and EHEDG approved.
Interchangeable with W+ parts. Inventory is reduced by sharing common parts.
Less prone to damage. Small objects can pass through pump with minimal damage.

The pump is approved by the EHEDG (European Hygienic Equipment & Design Group) as a hygienic pump and is also approved according to the American 3-A standard (optional). Consequently the pump can be used as a CIP as well as a first class hygienic product pump. The Ws+ series consist of 3 pump sizes.

Ws+ 20/15
Ws+ 30/30
Ws+ 44/50

At 50 Hz the Ws+ operates at a maximum pressure of 94 psi (6.5 bar) and a flow capacity of 396 GPM (90 m3/hour,) while the values for a pump with a 60 Hz motor is 138 psi (9.5 bar) and 484 GPM (110 m3/hour).

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
Ws+ Series – Self-Priming Pumps Brochure	PDF
Ws+ Series – NEMA – Product Highlights Flyer	PDF
Ws+ Series – NEMA – Centrifugal Pumps IOM Manual	PDF

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