Universal 1 Series - 420/520 High Capacity - Positive Displacement Pumps

Product Type(s) : Positive Displacement Pumps
Description :

Positive Displacement Pumps designed to overcome the challenge of accurate pumping at high-volume capacities.

Capacity :

Pump Services


WHERE TO BUY

FEATURES

Every revolution of the 420 pumps more than 1 gallons (6 liters) ; the 520, more than 2 gallons (8 liters). Ideally suited for tomato, vegetable and pet food industries and for chemical/industrial applications. FEATURES AND BENEFITS Sanitation Features

  • Rotor/shaft connection sealed from product zone
  • Sideway mounting capability for better draining
  • 316L pump body and cover
  • Non-galling Waukesha “88” alloy rotors standard; permits running at tighter clearances and higher efficiencies; 316 stainless also available
  • Mechanical seals standard
  • Aseptic model option available

Long-life Features

  • Large diameter 17-4 PH shafts for greater strength
  • Heavy duty bearing frame
  • Double tapered roller bearings contribute further to precise rotor movement andlonger seal life
  • Body bolted to gear case to maintain seal face contact, when removing cover androtors
  • Greased lubed bearings for positive lubrication to all bearings over entire speed,temperature and pressure range
  • No bearing in product zone
  • Rotor nuts designed for extended service without loosening
Theory of Operation

Time-tested Waukesha Cherry-Burrell® rotary pump; circumferential-piston operating principle


In the Waukesha Cherry-Burrell design, arc-shaped "pistons” (rotor wings) travel in annular-shaped cylinders machined in the pump body; the resulting long sealing path reduces slippage and produces a smooth flow of product without destructive pulses or pressure peaks and without valves or complex parts.

 

 

 

FOR LOW VISCOSITY FLUIDS

Rotors, made of Waukesha “88” alloy, can be run with close clearance to the 316L stainless steel fluid head, without galling or seizing should inadvertent pressure surges cause contact. The close clearances combined with the rotor geometry, which gives a long sealing path between the pump inlet and outlet, means low slip operation. As a result, you achieve: high efficiency, good priming ability, metering capability and good flow control.

 

 

 

FOR HIGH VISCOSITY FLUIDS

The large fluid cavities of the rotors, plus the large, easy entry anti-cavitation ports, allow efficient pumping of high viscosity fluids, slurries or even liquids with large chunks or
particles.

 

 

 

FOR NON-LUBRICATING AND ABRASIVE FLUIDS

The Waukesha Cherry-Burrell design has no bearings in the fluid being pumped, no sliding or rolling contact and no rotor-to-rotor contact. This produces EXCELLENT SERVICE LIFE even under severe operating conditions.

DIMENSIONS & SPECIFICATIONS

MODELS 420-UHC AND 423-UHC

0-400 RPM speed range. 6", 150# flanged port size; suitable to 200 PSI (13.8 bar) differential pressure. Temperature range -40°F (-40°C) to 300°F (149°C).

Double barriers or seals protect at every opening to the pump chamber. Live steam or a sterile fluid is circulated between these double seals at the ports, in the cover and at the shaft seals form an impenetrable barrier to contaminants.

  AO CP D I J L O U 2X FLANGE SIZE
IN 27.25 49.60 18.75 33.60 9.75 39.19 14.25 3.875 22.50 ANSI
6"
MM 692.2 1259.8 476.2 853.4 247.6 995.4 362 98.42 571.5

Approximate shipping weight: 2600 lb. (1180 kg.).

Pump Curve 95-07086 for Model 420-UHC & 423-UHC || PDF

NOTES: Dimensions are for guidance purposes only. Contact your WCB Representative if more detailed measurements are needed. Waukesha Cherry-Burrell (WCB) curves are intended for use as an aid for preliminary selection of pumps by trained and qualified engineers. All selections must be reviewed by authorized WCB personnel prior to placing an order. WCB is not responsible for unauthorized or incorrect selections resulting from the use of these curves.

MODELS 520-UHC AND 523-UHC

0-350 RPM speed range. 8", 150# flanged port size; suitable to 150 PSI (10.3 bar) differential pressure. Temperature range -40°F (-40°C) to 300°F (149°C).

Double barriers or seals protect at every opening to the pump chamber. Live steam or a sterile fluid is circulated between these double seals at the ports, in the cover and at the shaft seals form an impenetrable barrier to contaminants.

 


 

  AO CP D I J L O U 2X FLANGE SIZE
IN 27.25 51.47 18.75 33.60 9.75 39.55 14.25 3.875 22.50 ANSI
8"
MM 692.2 1307.3 476.2 853.4 247.6 1004.6 362 98.42 571.5

Approximate shipping weight: 3000 lb. (1360 kg.).

Pump Curve 95-07087 for Model 520-UHC & 523-UHC || PDF

NOTES: Dimensions are for guidance purposes only. Contact your WCB Representative if more detailed measurements are needed. Waukesha Cherry-Burrell (WCB) curves are intended for use as an aid for preliminary selection of pumps by trained and qualified engineers. All selections must be reviewed by authorized WCB personnel prior to placing an order. WCB is not responsible for unauthorized or incorrect selections resulting from the use of these curves.
MODEL DISPLACEMENT
PER REVOLUTION
NOMINAL
CAPACITY TO
PRESSURE
PSI
420-UHC 1.62 Gal. (6.129 Liter) 640 GPM (145.4 m³/hr.) 200 PSI (13.8 bar)
423-UHC 1.62 Gal. (6.129 Liter) 640 GPM (145.4 m³/hr.) 200 PSI (13.8 bar)
520-UHC 2.38 Gal. (8.990 Liter) 830 GPM (188.5 m³/hr.) 150 PSI (10.3 bar)
523-UHC 2.38 Gal. (8.990 Liter) 830 GPM (188.5 m³/hr.) 150 PSI (10.3 bar)

OPTIONS & PERFORMANCE

Body Standard:  316L Stainless Steel Options:

  • Flush taps for future double seals
  • Body retaining screws

Ports Standard:  S-Line Options:

  • Bevel Seat, I-Line, Q-Line; European DIN, SMS or RJT
  • Male NPT, 150 lb. & 300 lb. Flanges. (150 lb. standard on Model 320)
  • Rectangular Flange Inlet or Aseptic ports
  • Extended ports
  • Optional port sizes on 6, 18, 30 and 60 Models

Covers Standard:  316L SS plain cover, hex cover nuts Options:

  • Vent or drain connections
  • Aseptic, jacketed or vented

Rotors Standard:  Alloy 88 Twin Wing. Standard clearance for up to 180° F (82° C) Options:

  • Hot clearance to 300° F (149° C)
  • Clearance above 300° F (149° C) on application
  • Special & front face clearances and slotted rotor hub for special applications

O-Rings Standard: Buna-N Options:

  • Fluoroelastomer (FKM)
  • EPDM
  • Silicone
  • EPDM-SF

Seals Standard: Single Mechanical Options:

  • Double Mechanical
  • Seal faces:  Ceramic, Silicon Carbide, Tungsten Carbide, Carbon, John Crane Type 8B2 Carbon,  Seal Faces

Gearcase Standard: Painted cast iron WCB blue, 316L SS shafts, top shaft position, 17-4 PH shafts Options:

  • Steel-It paint
  • Lower shaft position
  • Pedestal shims for side mounted pumps. Left hand shaft position standard
  • Right hand shaft position on side mounted gearcase

Bases Standard: Flat plate, epoxy painted, with adjustable feet, SS coupling guard, and Lovejoy or Woods coupling Options:

  • Carbon steel channel

Drives StandardNord/Baldor Inline Option:

  • Right angle gear reducer

Click on the links below to download pump model performance curves for Universal High Capacity (UHC) Series Positive Displacement pumps.

Download Instructions for Reading Positive Displacement Pump Curves || PDF

 

  • Universal High Capacity Series - Model 420/423 - Performance Curve - 95-07086 || PDF
  • Universal High Capacity Series - Model 520/523 - Performance Curve - 95-07087 || PDF

 

Downloads

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