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Ambient temperature -40C...+60C
Hydraulic liquid - mineral oil based hydraulic oil
Viscosity 12 ...800 mm2/s
Fluid temperature -15C...+80C
Filtration 10 to NAS 1638
Max operating pressure, P=250;T=50bar A,B = 300 bar
Pressure for authomatical release of spool 70-140, bar
Leakage(A,B-T) 20cm3/min at 120bar
Nominal flow 80 l/min
Spool stroke +/- 7,9 mm
Actuating force < 220 N
The hydraulic distributor Р81 is used for switching on/off and directing the working fluid between head flow generators (hydraulic pumps), head flow consumers (hydraulic cylinders, motors, etc.), and the tank. It has a setting from 70 to 140 bar for automatic switch-off. It is designed as a "log splitter valve".
The hydraulic distributor Р81 is a mono-block distributor with manual control. The body is made of cast iron EN-GJL300, and the spool is made of carburized steel with hard chrome plating.
The distributor is fixed with 3 (three) bolts М8.