M481R and 482R Sight Dome Reservoir

Servo-Meters can be supplied with oil by pressure systems (up to 30 psig) or gravity systems. 

Gravity systems are generally preferred. 

Remote reservoirs should be connected to the bottom port of Serv-Oil equipment with a minimum 5/16" I.D. line.

Stand-pipes should be installed from the top of the equipment and extend above the reservoir for gravity systems to prevent airlock of the Servo-Meters.

Sight domes are available to vent air from the system, and to confirm visually the presence of oil. 

Pressure-fill systems should be vented, or use low velocity recirculation of the oil supply.