VENTED RESERVOIR
with lines above fluid level
ELECTRIC MOTOR
unidirectional single speed
VENTED RESERVOIR
with lines below fluid level
FILTER or STRAINER
HYDRAULIC LINE
with full flow (plumbing - may be 
tubing, hose, or flow passage in 
manifold
PILOT or DRAIN LINE
limited flow
LINES CROSSING
LINES CONNECTED
QUICK DISCONNECT
(disconnected)
PLUGGED PORT
(test port)
FLOW METER
ELECTRIC MOTOR
unidirectional variable speed
HYDRAULIC PUMP
fixed displacement unidirectional
HYDRAULIC MOTOR
bi-directional
GAUGE
pressure
GAUGE
temperature
ACCUMULATOR
gas charged diaphragm type