Operating Pressure 350BAR
Internal Leakage 5 drops/min.max.to 85% of norminal setting
Pilot Ratio 3:1(MCBCA-X)/4.5:1(MCBCG-X)
Temperature -30°C to +120°(-22°F to+250°F)
Cavity T-11A see page K-2
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 2 adds to the effective relief setting at a ratio
of 1 plus the pilot ratio times the backpressure
Fixed-setting counterbalance valves offer a shorter cartridge
extension than the adjustable version.
Fixed-setting, 3-port counterbalance valves with pilot-assist function similarly
to the adjustable versions except the fixed setting is pre-set to a nominal
value. These fixed-setting valves 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.Other names for this valve
include motion control valve and over-center valve.