Sanitary Centrifugal Pumps

Sanitary Centrifugal Pump Resource Center

We have published a series of articles on our Blog, addressing Sanitary Centrifugal pumps, their technical features and application data. Listed below are links to the various posts. We will continue to update these as more are published.

SPX EcoPure Seal-Less Sanitary Centrifugal Pump
The SPX EcoPure Centrifugal Pump has no Mechanical Seals

The EcoPure™ sanitary centrifugal pump line from SPX represents an innovative range of magnetically driven, hygienic pumps for common applications which require low viscous fluid transfer.

Total containment of the liquid inside the pump is achieved using a hermetically sealed chamber, which isolates the process fluid from the surrounding environment. This eliminates the need for mechanical seals and the associated wear and leakage that would normally be experienced with pumps which incorporate mechanical seal designs. The magnetically driven pumps are therefore not only environmentally friendly (due to no product leakage, or seal flush water to treat), they also contribute to improved process up time in food, beverage, dairy and pharmaceutical plants.

  • No seals to replace or maintain
  • increased uptime, lower maintenance costs
  • less potential for contamination
  • less infrastructure required (no water lines or controls for seal flushing)
  • Key components manufactured from bar stock or forged for high durability, precision and efficiency
  • Pump is designed to virtually eliminate issues associated with vibration, noise, short bearing life, low NPSH requirements, high seal maintenance costs and poor tolerance to adverse operating conditions
  • 3-A certified and EHEDG (European Hygienic Engineering & Design Group) compliant
  • Designed for CIP (Cleaning in Place) as well as SIP (Sterilizing in Place)
  • Suitable for a wide variety of food, beverage and pharmaceutical products
  • Leak-free based on the absence of a mechanical seal.

Waukesha S200 Series All Machined Sanitary Centrifugal Pumps
Waukesha S200 Series Sanitary Centrifugal Pump

Designed for use in the Bio-Pharmaceutical industry, the Waukesha S200 series high purity, sanitary centrifugal pumps are manufactured to ASME BPE specification criteria. All product contact components on the S200 are machined from wrought <5% ferrite level, 316L stainless steel and feature a 20 Ra product contact surface finish. Material heat numbers are available on all product contact components.

Waukesha S200 Sanitary Centrifugal Pump Features

  • High efficiency, low NPSHR design for a wide variety of applications
  • One size mechanical seal for all S200 Series models; reducing parts inventory and cost (commercial seals available). Dedicated water for injection (WFI) configurations available from Waukesha
  • Integral impeller/shaft design for fewer parts, greater concentricity and easy maintenance
  • Close coupled S200 Waukesha sanitary centrifugal pumps use NEMA JM Frame motors with larger diameter shafts and bearings (compared to C Frame motors)
  • All Waukesha S200 Series impellers are made from wrought 316L stainless steel.

Waukesha 200 Series Sanitary Sanitary Centrifugal Pumps
Waukesha 200 Series Sanitary Centrifugal Pump

Designed for heavy-duty, high-efficiency applications, the Waukesha 200 Series sanitary centrifugal pumps provide exceptional corrosion resistance. Impeller and shaft are one piece, which connects directly to motor shaft; eliminating such problems as vibration, short bearing life, high NPSH requirements, high seal maintenance, poor tolerance, and adverse operating conditions.

Waukesha 200 Series Sanitary Centrifugal Pump Features

  • 316L stainless steel volute, backplate, impeller and shaft
  • Five-bladed impeller with deeper eye for improved inlet characteristics
  • All Waukesha 200 Series sanitary centrifugal pumps feature a modular seal design - one size fits all 200 series pump models
  • Wide range of seal options, including standard commercial seals
  • Strong JM-type motor with large bearings and strong shaft are standard on the Waukesha 200 Series sanitary centrifugal pump.
  • Base mounting options available with all sizes

Waukesha C Series Sanitary Centrifugal Pumps
Waukesha C Series Sanitary Centrifugal Pump

The versatile Waukesha C Series close-coupled sanitary centrifugal pump offers strong performance and competitive price/value within the lower spectrum of heavy-duty, centrifugal pump applications. Waukesha C series sanitary centrifugal pumps can be installed in a series without fear of seal failure from elevated inlet pressures, even with viscous products.

Waukesha C Series Sanitary Centrifugal Pump Features:

  • Hydraulic balancing reduces pressure at sealing surface for less wear, greater efficiency
  • C Series centrifugal pumps are easy-cleaning,
  • C Series pumps open type impellers deliver smooth pumping performance
  • Enlarged inlets available for larger suction lines
  • Waukesha C Series sanitary centrifugal pump and parts are interchangeable with other C-Series brands

C Series Pump Assembly Video

APV W+ Sanitary Centrifugal Pump

APV W+ Family of Sanitary Centrifugal Pumps

The APV W+ pump series if based on a unique hydraulic design that ensures maximum efficiency, allows for the highest hygienic standards and reduces noise and vibration. The W+ range consists of 16 standard models with pressure and flow capacities to 217psi and up to 1,760gpm. A number of special versions are available, including the Wi+ inducer pump for low NPSH applications and the Ws+ self priming unit designed to handle CIP return and other fluids with entrained air and foam.

Features and Benefits of the W+ Pump

  • Comprehensive: 16 models, Inducer option on 14, Flows to 1,760 gpm , pressures to 217psi
  • Advanced high efficiency impeller design
  • Over 100,000 W+ pumps are installed worldwide
  • Quiet performance with minimal vibration
  • Internal mechanical seal is lubricated by the product to extend life.
  • Ease of maintenance
  • Inducer and self-priming models are available
APV W+ Centrifugal Pump Flow Rates

ModelInlet SizeOutlet SizeMax GPM @ 1750Max GPM @ 3500Max Head (Ft) @ 1750Max Head (Ft) @ 3500
10/8 1 32 65 17 68
22/20 2 2 85 175 34 138
25/210 6 4 1610 - 134 -
30/80 4 3 315 650 43 171
30/120 4 3 410 810 47 190
35/35 2 142 280 49 198
35/55 3 230 465 50 200
50/8 1 42 85 68 275
55/35 140 245 76 302
55/60 3 2 305 615 78 315
60/110 4 3 475 975 90 359
65/350 6 4 1250 2300 100 400
70/40 110 235 98 390
80/80 3 2 310 625 112 450
110/130 4 3 575 1050 150 600

APV Wi+ Inducer Centrifugal Pump
The APV W+ Inducer Pump

An Inducer is an axial flow impeller with blades that wrap in a helix around a central hub. The inducer rotates in a close-fitting housing to provide a "booster" effect in front of the main impeller.

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.

APV Ws+ Self Priming Sanitary Centrifugal Pump
APV Ws+ Self Priming Sanitary Centrifugal Pump

The self-priming Ws+ is designed to handle 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 optimised 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.
•3A (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.

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