Appendix 1 - Gear Pump Gasket Adjustment For Temperature; Bolt Torque - Pentair Pool Products SHURflo Viton GMSV2A Operating Instructions, Performance, Specifications And Parts Manual

SHURflo Operating Instructions, Performance,
Specifications and Parts Manual
Viton Models GMSV2A, GMSV4A, GMSV6C, GMSV2A3T, GMSV2A33T,
GMSV4A5T, GMSV4A53T, GMSV6C7T and GMSV6C73T
Teflon Models GMST2A, GMST4A, GMST6C, GMST2A3T, GMST2A33T,
®
GMST4A5T, GMST4A53T, GMST6C7T and GMST6C73T

Appendix 1 - Gear Pump Gasket Adjustment for Temperature

Gear pump is factory assembled to
operate within a temperature range
of 70° – 120° F (20° – 50° C). For
temperatures outside this range,
please see the table below for your
series and port size pump.
NOTE: Always refer to the original
owner's manual repair and mainte-
nance sections on pump disassem-
bly and assembly for more detailed
instructions.
Kit PN NPT Port Size
24436 Pumps with 3/8"ports
23956 Pumps with 1/2"ports
23982 Pumps with 1"ports
Gear Pump
Gasket Install
Assembly
Form L-4089 (2/17)
NOTE: When pumping fluids of high
viscosity (>500 SSU), the required torque
and HP can be reduced by adding a
gasket for increased gear clearance.
Gasket Installation Instructions (refer
to assembly diagram below):
1. Turn off power to pump, turn off
inlet and outlet valves, and relieve
pressure in lines.
2. Allow pump to cool.
3. Remove cover screws (1), cover (2)
and gasket (3). Be sure to mark
Temp Range
Up to 120° F Use standard graphoil gasket as
shipped (0.010" thick)*
(50° C)
120° F – 280° F Use optional thicker (0.015") graphoil
(50° C – 138° C) gasket
Up to 120° F Use standard graphoil gasket as
(50° C) shipped (0.010" thick)*
120° F – 280° F Use optional thicker (0.015") graphoil
(50° C – 138° C) gasket
Up to 70° F Use optional thinner (0.010") graphoil
(20° C) gasket
70° F – 120° F Use standard graphoil gasket as
(20° C – 50° C) shipped (0.015" thick)*
120° F – 280° F Use 2X optional thinner (for a total of
(50° C – 138° C) 0.020") graphoil gasket
*Standard Set-up
15
proper orientation of cover and
pump body.
4. Replace gaskets (3) per instructions
listed in table.
5. Replace cover (2) and cover screws
(1) according to orientation marked
in step 3.
6. Tighten cover screws (1) in
sequence listed on diagram. Use
torque specifications listed in table.
Instructions
Bolt
Tightening
Sequence

Bolt Torque

75 in.-lbs.
(8.5 N-m)
75 in.-lbs.
(8.5 N-m)
75 in.-lbs.
(8.5 N-m)