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Quick Reference Cartridge Valves Technical Information Counterbalance valves Quick reference Hydraulic Vent Cavity Description SDC10-3S Counterbalance Valve, Atmospheric Vent Flow* Pressure 60 l/min 350 bar [16 US gal/min] [5000 psi] Flow* Pressure 140 l/min 350 bar [37 US gal/min] [5000 psi] Description Counterbalance Valve, Hydraulic Vent Flow* 20 l/min [5 US gal/min] 60 l/min [16 US gal/min] 115 l/min [30 US gal/min] 190 l/min [50 US gal/min] Atmospheric Vent Description Counterbalance Valve, Atmospheric Vent * Flow ratings are based on a pressure drop of 7 bar [100 psi] unless otherwise noted. They are for comparison purposes only. 520L0588 • Rev DB • November 2010 Quick reference Counterbalance valves Atmospheric Vent

Quick Reference Cartridge Valves Technical Information Counterbalance valves Quick reference Cavity None Description Counterbalance Valve, Hydraulic Vent, Catalog HIC Flow* Pressure 60 l/min 350 bar [16 US gal/min] [5075 psi] Description Flow* Pressure Dual-Counterbalance 57 l/min 345 bar Valve, with Makeup Checks, [15 US gal/min] [5000 psi] Catalog HIC Cavity None Flow* 20 l/min [5 US gal/min] 60 l/min [16 US gal/min] 115 l/min [30 US gal/min] Cavity None Description Counterbalance Valve, Atmospheric Vent, Catalog HIC Quick reference Counterbalance valves * Flow ratings are based on a...

Quick Reference Cartridge Valves Technical Information Counterbalance valves Application notes MOTION CONTROL VALVES Motion control valves, also referred to as load holding valves, are used to control the 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 is suddenly closed. There are two basic types of motion...

Quick Reference Cartridge Valves Technical Information Counterbalance valves 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. 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 spool leakage if...

Quick Reference Cartridge Valves Technical Information Counterbalance valves Application notes 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 rod area R = Counterbalance valve pilot ratio; see below for more information Note that these equations are idealized and do not consider any backpressure in the circuit, which...

Quick Reference Cartridge Valves Technical Information Counterbalance valves Hydraulic Vent CP448-1 OPERATION This is a pilot-operated counterbalance valve. Theoretical performance Pressure drop piloted open 1 free flow 2 1 8.0:1 Rated pressure Rated flow at 22 bar [319 psi] Leakage Weight Pilot ratio Cavity Cross-sectional view turn ccw to increase pressure setting turn cw to reduce pressure setting Counterbalance valves ORDERING INFORMATION CP448 - 1 - B - 6S - E - B - 150 - 4.5 - 040 Seals B = Buna-N V = Viton Housing and ports 0 = No Housing 2B = AL, 1/4 BSP 3B = AL, 3/8 BSP 4S = AL, #4...

Quick Reference Cartridge Valves Technical Information Counterbalance valves Hydraulic Vent CB10-HV OPERATION This is a pilot-operated counterbalance valve. Pilot open Specifications Rated pressure Rated flow at 22 bar [319 psi] Leakage Weight Pilot ratio Cavity Cross-sectional view Type E: External Adjustment Type F: Tamper Resistant ORDERING INFORMATION CB10-HV-1-A-1-E-70-B-XXXX Spring Range For Pilot Ratio Z (1.5:1) 1 = 20-70 bar [290-1015 psi] 2 = 30-90 bar [435-1305 psi] Pilot Ratio 3 = 50-140 bar [725-2030 psi] Z = 1.5 to 1 For Pilot Ratio A (3:1) A = 3 to 1 1 = 35-110 bar [507-1595...

Quick Reference Cartridge Valves Technical Information Counterbalance valves Hydraulic Vent CP441-1 OPERATION This is a pilot-operated counterbalance valve. Theoretical performance Pressure drop pilot open Rated pressure Rated flow at 22 bar [319 psi] Leakage Weight Pilot ratio Cavity Cross-sectional view turn ccw to increase pressure setting turn cw to reduce pressure setting Counterbalance valves ORDERING INFORMATION CP441 - 1 - B - 12S - E - B - 250 - 4.5 - 015 Seals B = Buna-N V = Viton Housing and ports 0 = No Housing 4B = AL, 1/2 BSP 6B = AL, 3/4 BSP 10S = AL, #10 SAE 12S = AL, #12...

Quick Reference Cartridge Valves Technical Information Counterbalance valves Hydraulic Vent CP443-1 OPERATION This is a pilot-operated counterbalance valve. Theoretical performance Pressure drop Rated pressure 350 bar [5000 psi] Rated flow at 7 bar 190 l/min [50 US gal/min] [100 psi] Leakage 10 drops/min @ 70% of crack pressure Weight 1.22 kg [2.69 lb] Pilot ratio 3:1, 4.5:1, 10:1 Cavity CP20-3S Cross-sectional view turn ccw to increase pressure setting turn cw to reduce pressure setting ORDERING INFORMATION CP443 - 1 - B - 16S - E - A - 100 - 3.0 - 015 Seals B = Buna-N V = Viton Housing...

Quick Reference Cartridge Valves Technical Information Counterbalance valves Atmospheric Vent CB10-AV OPERATION This is a pilot-operated counterbalance valve with an atmospheric vent. Pilot open Specifications Rated pressure Rated flow at 22 bar [319 psi] Leakage Weight Pilot ratio Cavity Cross-sectional view 17mm 16 - 20 Nm [12-15 lbf*ft] Type E: External Adjustment Type F: Tamper Resistant Counterbalance valves 4mm Turn ccw to increase pressure setting Turn cw to reduce pressure setting ORDERING INFORMATION CB10-AV-1-A-1-E-70-B-XXXX Spring Range For Pilot Ratio Z (1.5:1) 1 = 20-70 bar...