Typically the design of Hydraulic Power Units would also include these features:
Reservoir filler breather
Oil level sight gauge
Air filter breather
Desiccant breather
Oil heater
Oil cooler
Oil level switch
Return line filter
Pressure line filter
Inspection hatch
Transducers
Hand pump
Get in touch to discuss any of your hydraulic power unit design requirements on 01924 259999 or sales@hedley-hyd.com.