Flowserve Polybase baseplates - Manual (Page 9)

Polybase Baseplate INSTRUCTIONS ENGLISH 71569284 – 12-10
Page 9 of 24 flowserve.com
The Polybase baseplate utilizes as standard the
unique Polybloc mounting system. This system is
comprised of corrosion resistant polymer concrete
mounting blocks having surface flatness and
parallelism equivalent to machined steel blocks.
Motor mounting Polyblocs incorporate the unique
Bloc-loc™ counterbore/jam nut feature for positive
attachment to the baseplate (Figure 3.1).
The optional 8-point™ motor adjusters and the Bloc-
loc™ features are joined to provide axial and
transverse motor adjustment (Figure 3.1).
Figure 3.1
Counterbore type Mounting Polyblocs are also totally
suitable if order requirements do not require that
motor Polyblocs must be independently locked to the
baseplate. In this case the polymeric block are fitted
with the counterbore side of the block facing the
surface of the baseplate.
3.2 Nomenclature
Individual baseplate sizes in the Polybase baseplate
product line are identified by the ASME B73.1 pump
group size they support and the length of the
baseplate. For example:
139 = Group 1 pumps; 39 inches long.
264 = Group 2 pumps; 64 inches long.
398 = Group 3 pumps; 98 inches long.
The length of the baseplate determines the motor
frame size that can be fitted. The longer baseplates
allow larger motors to be fitted.
3.3 Design of major parts
3.3.1
Baseplate materials of construction
The body of a Polybase baseplate is composed of an
epoxy vinyl ester resin with integral silica aggregate.
The threaded inserts are made of 304SS. The
inserts are retained in the Polybase baseplate by a
two-part industrial epoxy (Master Bond EP21LV or
equivalent).
3.3.2
Resin options
The standard epoxy resin is Derakane 411-50 (black
or gray in color). Novolac GT4500 resin is optional
for severe sulfuric acid services (red in color).
Novolac GT4000 resin is optional for chlorinated
solvent services (blue in color).
3.4 Performance and operation limits
This product has been selected to meet the
specification of your purchase order (see section 1.5).
The following data are included as additional
information to help with your installation. If required,
a definitive statement for your application can be
obtained from Flowserve.
3.4.1
Temperature ratings
The maximum equipment temperature that can be
tolerated by the various Polybase resins is listed
below:
Black bases (Derakane) = 149 °C (300 °F)
Red bases (GT 4500) = 82 °C (180 °F)
Blue bases (GT4000) = 104 °C (220 °F)
The minimum acceptable temperature for the
Polybase resins is -45 °C (-50 °F).