Return line oil indicating gauges for 15 PSI
filter applications, shows when system needs
service, fits return line filter head castings
with 1/8" FNPT gauge ports, Green: system
operating correctly, Yellow: syste will need
service soon, Red: filter & fluid need to be
serviced or replaced, for use on return line
filter head castings with a 1/8" FNPT gauge port,
designed for petroleum based, water glycols &
water/oil emulsion fluds, operating temp: -22� F
to 212� F
