Waukesha Universal 1 Pump

Waukesha Universal 1 Series

For over 50 years, Waukesha Cherry-Burrell® has led the industry in designing, manufacturing, and applying external circumferential piston (ECP) style rotary positive displacement pumps. Trusted worldwide, Waukesha pumps deliver reliable performance with key sanitary and operational features. This Clean-out-of-Place pump is the one that started it all.

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Universal 1 Pump Overview

Key Features

316L stainless steel body, cover, and shaft
Easy disassembly for COP (Clean-Out-of-Place) cleaning
FDA-compliant elastomers
Aseptic models available
Meets 3-A sanitary standards
Pressure capability up to 200 psi (13.8 bar)
No bearings in the product zone
Non-galling Waukesha “88” alloy rotors:
- Allows tighter clearances
- Handles a wide range of viscosities
Remanufacturing and Inspect & Advise programs to extend pump life and reduce cost

Installation Features

Bidirectional flow with rotors secured by double jam nuts
No restrictions on flow direction or shaft position
Versatile 3-way gear case mounting, including vertical port alignment
Upper or lower shaft positioning options
Easy conversion from single O-ring to mechanical seals
Interchangeable installation dimensions with other Universal Series pumps

Theory of Operation:

Positive Displacement Pumps

The Waukesha Universal Series positive displacement pump operates on a rotary lobe principle, using two precision-engineered rotors that turn in synchronization within a close-clearance rotor case. As the rotors rotate, they create expanding cavities on the inlet side of the pump. This expansion draws product into the pump chamber without excessive shear or turbulence, making it ideal for high-viscosity, shear-sensitive, or particulate-laden fluids.

As the rotors continue to rotate, the cavities carry the product around the periphery of the rotor case. On the discharge side, the cavities contract, forcing product out of the pump and into the process line. Because the rotors never actually touch each other or the pump housing, the design maintains tight, repeatable flow with minimal product slip — even under high discharge pressures.

Alloy 88: How It Works

A key feature of the Waukesha pump line is the use of Alloy 88, a proprietary non-galling material used for rotor construction. Traditional stainless steel rotors can be prone to galling or seizing under close-clearance, metal-to-metal conditions — particularly in high-pressure or low-lubricity product applications.

Alloy 88 provides several benefits:

Non-Galling Performance: Prevents rotor-to-rotor and rotor-to-case contact damage, even under upset conditions.
Durability: Withstands the demanding conditions of sanitary and industrial processes.
Reliability: Allows for tighter operating clearances to decrease slip, which improves pump efficiency and volumetric accuracy without risk of rotor binding.

By combining the gentle, low-shear pumping action of rotary lobe technology with the robust, non-galling properties of Alloy 88, Waukesha Universal Series pumps deliver a balance of efficiency, reliability, and long service life.

Alloy 88 Rotor Design

For decades, Waukesha has advanced rotary pump technology, refining every detail. The Alloy 88 rotor design continues that legacy, built to prevent galling, maintain precision, and keep your process running smoothly in demanding environments.

Key Applications

Food & Beverage

Soups

Stews

Tomato Pastes

Vegetables

Dressings

Chocolate

Fats & Oils

Batters

Cream Fillings

Brewery

Wort

Soft Drinks

Fruit Drinks

Meat Processing

Dairy

Cream

Milk

Cheese Curd

Whey

Cottage Cheese

Yogurt

Pharmaceutical & Cosmetics

Pill Pastes

Syrups

Extracts

Slurries

Face Creams

Lotions

Hair Styling Gels & Liquids

Dyes

Alcohols

Soaps

Cosmetics

Chemical & Industrial

Solvents

Paints

Fuels

Resins

Polymers

Sludges

Oil

Lubricants

Technical Specifications

Model	Displacement Per Revolution	Nominal Capacity	Maximum Pressure
006-U1	0.0082 GAL. (0.031 Liter)	6 GPM (1.3 m³/hr.)	200 PSI (13.8 bar)
015-U1	0.0142 GAL. (0.054 Liter)	9 GPM (2.0 m³/hr.)	200 PSI (13.8 bar)
018-U1	0.029 GAL. (0.110 Liter)	17 GPM (3.8 m³/hr.)	200 PSI (13.8 bar)
030-U1	0.060 GAL. (0.227 Liter)	36 GPM (8.2 m³/hr.)	200 PSI (13.8 bar)
040-U1	0.076 GAL. (0.288 Liter)	45 GPM (10.2 m³/hr.)	150 PSI (10.3 bar)
060-U1	0.153 GAL. (0.579 Liter)	90 GPM (20.4 m³/hr.)	200 PSI (13.8 bar)
130-U1	0.254 GAL. (0.961 Liter)	150 GPM (34.1 m³/hr.)	200 PSI (13.8 bar)
220-U1	0.522 GAL. (1.976 Liter)	310 GPM (70.4 m³/hr.)	200 PSI (13.8 bar)