Operating Pressure 280BAR
Internal Leakage 0.3ml/min.max.to 85% of norminal setting
Pilot Ratio 3:1
Temperature -30°C to +120°C(-22°F to+250°F)
Cavity T-24A see page K-6
Fluids Mineral-based fluids with viscosities of 7.4 to 420 cSt.
The setting value of the balance valve should be at least 1.3
times of the load pressure value.
Backpressure at port 4 adds to the effective relief setting at a ratio
of 1 plus the pilot ratio times the backpressure
Reseat exceeds 85% of set pressure when the valve is standard
set. Settings lower than the standard set pressure may result in
lower reseat percentages
Vented counterbalance Valve with pilot assist are meant to control an
overrunning load. The check valve allows free flow from the directional
valve (port 2) to the load (port 1) while a direct-acting, pilot-assisted
relief valve controls flow from port 1 to port 2. Pilot assist at port 3 lowers
the effective setting of the relief valve at a rate determined by the pilot ratio.
Backpressure at port 2 does not affect the valve setting because the spring
chamber references the vent (port 4).Other names for this valve include
motion control valve and over-center valve.