Introduction
Waukesha Cherry-Burrell
®
Brand Universal 3 Pump
Page 14
95-03103
02/2021
"Low Viscosity" rotors
may be used with liquid temperatures up to 180°F (82°C).
Between 160° (71°C) and 200°F (93°C), consider other application factors, such as; speed of operation,
differential pressure, lubricating properties of liquid being pumped, and product viscosity. If these factors trend
toward a difficult application (high speed, high pressure, non-lubricating) then "Standard" clearance rotors are
recommended.
“Standard” clearance rotors
are recommended for use with liquid temperatures between -40°F (-40°C) and
300°F (149°C). They provide additional clearance in the front face area plus rotor to body areas. Because of
this additional clearance there is more slip (inefficiency) with low viscosity liquids, which the pump must
overcome with higher operating speed (rpm.) VHP (viscous horsepower) is slightly lower when using standard
clearance rotors. Standard clearance rotors are also used when the product viscosity is above 200 CPS.
“316SS” clearance rotors
are made from 316 stainless steel material (in place of standard non-galling alloy
88) and recommended for use at temperatures up to 200°F (93°C). These rotors provide additional clearance
all around (more than Standard clearance alloy 88 rotors) to ensure no running contact between the 316 SS
rotors and other 316 SS pump components. Because of this additional clearance, there is more slip
(inefficiency) with low viscosity liquids, which the pump must overcome with higher operating speed (rpm).
VHP (viscous horsepower) is slightly lower when using “316SS” clearance rotors.
NOTE:
Consult SPX FLOW Technical Services for applications near 300°F (149°C) or above 200°F (93°C)
with 316SS rotors. For clearance data, see Table 18, “Rotor Clearances,” on page 89.
Certifications
EHEDG
Only pumps containing the elastomers and seals listed on the
EHEDG certificate are EHEDG-certified. To maintain compliance,
pumps must have process connections that meet EHEDG
guidelines and must be mounted in a free-drain position.
"SPX FLOW" and select the "Go" button.
3-A
Only designs meeting 3-A Standards are 3-A certified. To
maintain compliance, pumps must have process connections that
meet 3-A Standards and must be mounted in a free-drain
position.
Company: SPX Flow US, LLC
Certificate: 29 (for all SPX FLOW Centrifugal and Rotary Pumps)
Standard: 02-__ for Centrifugal and Positive Rotary Pumps;
63-__ for Sanitary Fittings. ("__" indicates the current revision.)
ATEX
Only pumps that are listed as ATEX on the pump nameplate (see
Figure 227 on page 130) are ATEX-certified.