THERMOJET
®
G-3700E SERIES
OIL PURIFIER SYSTEM
INSTALLATION AND OPERATING MANUAL
Doc #
77740151
Rev
03
Date
June 2020
Page
19
of
111
Inlet and Return Oil Piping Connections
The oil inlet and outlet connection sizes are 1” FNPT. The user suction and discharge line sizes
(either schedule 40 pipe or smooth I.D. hose) should be ¾” I.D. minimum and 2” I.D. maximum to
ensure that no flow restrictions will occur due to line lengths, high viscosity, etc. When
processing high viscosity oils, the larger sizes of pipe or hose should be used. If tubing is used,
increase the diameter by at least one size. All connections should be tight and free of air leaks.
If a flooded suction to the ThermoJet Oil Purifier is not practical, ensure that the suction height
from the reservoir drain to the inlet connection of the Thermo
Jet
is no more than 8 feet (2.4
meters) above the minimum oil level in the reservoir.
If the suction lift exceeds 8 feet (2.4 meters), install a foot-valve or foot-pump to ensure that the
suction pump will prime and hold prime during long-term service.
NOTICE:
Even very small air leaks can dramatically affect pump suction
performance. If air bubbles are visible in the sight glass after flow is
established, re-tighten all suction connection points.
Oil Inlet
Connection
Oil Return
Connection
Oil Line Connections
1” NPT
