Counterbalance Valves
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Quick Reference Counterbalance Valves Catalog Quick Reference Hydraulic Vent Flow* 20 l/min 5 US gal/min 60 l/min 16 US gal/min 115 l/min 30 US gal/min 266 l/min 70 US gal/min Counterbalance Valve, Atmospheric Vent, Pilot Port 3 Counterbalance Valve, Atmospheric Vent, Pilot Port 1 Atmospheric Vent Counterbalance Valve, Hydraulic Vent, Pilot Port 3 Atmospheric Vent CB - Counterbalance Valves Quick Reference Hydraulic Vent Counterbalance Valve, Hydraulic Vent, Pilot Port 1 60 l/min 60 US gal/min 140 l/min 37 US gal/min Dual Counterbalance Dual Counterbalance Valve, Atmospheric Vent, Catalog...

Quick Reference Counterbalance Valves Catalog Application Notes Hydraulic Vent 57 l/min 15 US gal/min Dual Counterbalance 2/ makeup Checks, Catalog HIC Motion control valves, also referred to as load holding valves, are used to control the MOTION CONTROL VALVES motion of a load in the following ways: Prevent a load from dropping in case of hose or tube failure. Prevent a load from drifting caused by directional control valve spool leakage. Provide smooth, modulated motion when the load is in a lowering or run-away mode. · Provide smooth, modulated motion when the directional control valve...

Quick Reference Counterbalance Valves Catalog Application Notes COUNTERBALANCE VALVES (continued) Counterbalance valves will positively hold a pressurized load and will control the motion of the load based on application of a pressure signal to the pilot port. Counterbalance valves are available as individual cartridges or standard cartridge-in-body (CIB) packages. CB - Counterbalance Valves Application Notes A typical circuit application for a counterbalance valve contains a pump, directional control valve, and an actuator. Without a counterbalance valve the load will drift down due to...

Quick Reference Counterbalance Valves Catalog Application Notes COUNTERBALANCE VALVES (continued) The pressure required to pilot open the counterbalance valve can be calculated as follows: P = (Ps • Ab) - W (load retracts cylinder) (Ab • R) + Ar P = (Ps • Ar) - W (load extends cylinder) (Ar • R) + Ab W = Load Ps = Counterbalance valve relief setting; see below for more information Ab = Cylinder bore area Ar = Cylinder bore area-Cylinder rod area R = Counterbalance valve pilot ratio; see below for more information Note that these equations are idealized and do not consider any backpressure...

Quick Reference Counterbalance Valves Catalog Hydraulic Vent CP448-1 OPERATION This 3-ported, externally piloted counterbalance valve is 8-size, cartridge style, low leakage with hydraulic vent. The check section allows free flow from the directional valve (port 2) to the load (port 1), while normally blocking flow from port 1 to port 2. Reverse flow is blocked until pilot pressure is applied at port 3. When the load pressure at port 1 rises above the pressure setting, the relief valve is activated and pressure is relieved from port 1 to port 2. APPLICATIONS Rated pressure Rated flow at 22...

rnmafi'ingf Counterbalance Valves Catalog * Hydraulic Vent Member of the Confess Group £P44Q *| pressure setting turn cwto reduce pressure setting EXAMPLE CIRCUITS Load Holding - Single Actuator Load Holding - ORDERING INFORMATION hydraulic vent

Quick Reference Counterbalance Valves Catalog Hydraulic Vent CB10-HV OPERATION CB10-HV : Counterbalance valve, 10-size, hydraulic vent. This valve is 3-ported, externally piloted and low leakage. The check section allows free flow from the directional valve (port 2) to the load (port 1), while normally blocking flow from port 1 to port 2. Reverse flow is blocked until pilot pressure is applied at port 3. When the load pressure at port 1 rises above the pressure setting, the intergral relief valve is activated and pressure is relieved from port 1 to port 2. APPLICATIONS Single counterbalance...

—— — -m-mm,M M Counterbalance Valves Catalog Member of the Confess Croup Type E: External Adjustment Type F:Tamper Resistant pressure setting pressure setting EXAMPLE CIRCUITS Load Holding - Single Actuator ORDERING INFORMATION Counterbalance valve, Pressure Range

Quick Reference Counterbalance Valves Catalog Hydraulic Vent CP441-1 OPERATION This 3-ported, externally piloted unit is a 12-size cartridge style, low leakage counterbalance valve with hydraulic vent. The check section allows free flow from the directional valve (port 2) to the load (port 1), while normally blocking flow from port 1 to port 2. Reverse flow is blocked until pilot pressure is applied at port 3. When the load pressure at port 1 rises above the pressure setting, the integral relief valve is activated and pressure is relieved from port 1 to port 2. APPLICATIONS Single...

rnmafi'ingf Counterbalance Valves Catalog i—LMiMta LM M Hydraulic Vent Member of the Confess Group £P441 *| EXAMPLE CIRCUITS Load Holding - Single Actuator ORDERING INFORMATION hydraulic vent

Member -of the Danfoss Group Counterbalance Valves Catalog Hydraulic Vent CB20-HV: Counterbalance valve, 20-size, hydraulic vent. This is a 3-ported, externally piloted, cartridge style, low leakage unit. The check section allows free flow from the directional valve (port 2) to the load (port 1), while normally blocking flow from port 1 to port 2. Reverse flow is blocked until pilot pressure is applied at port 3. When the load pressure at port 1 rises above the pressure setting, the integral relief valve is activated and pressure is relieved from port 1 to port 2. Single counterbalance...

/"Vlf7U<:!*"?/ ^ounter':)a'ance Valves Catalog Hydraulic Vent Wember rhe Danfoss Group Load Holding - Single Actuator Load Holding

Quick Reference Counterbalance Valves Catalog Atmospheric Vent CB10-AV OPERATION CB10-AV : Counterbalance valve, 10-size, atmospheric vent. This is a 3ported, externally piloted, cartridge style, low leakage unit. The check section allows free flow from the directional valve (port 2) to the load (port 1). Reverse flow is blocked until pilot pressure is applied at port 3. When the pressure at port 1 rises above the pressure setting, the integral relief valve is activated and vents the area behind the pilot piston. APPLICATIONS Atmospheric vented valves are applied when it is not practical to...