MODEL
CWEG
5:1 pilot ratio, vented counterbalance valve
SERIES 2 / CAPACITY: 120 L/min. / CAVITY: T-22A
4-Port Vented
4-Port Vented, Non-adjustable
Vented counterbalance valves 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.
TECHNICAL DATA
Pilot Ratio 5:1
Maximum Recommended Load Pressure at Maximum Setting 320 bar
Maximum Setting 420 bar
Factory Pressure Settings Established at 30 cc/min.
Maximum Valve Leakage at Reseat 0,3 cc/min.
Check Cracking Pressure 1,7 bar
Adjustment - Number of Counterclockwise Turns to Increase Setting 5
Reseat >85% of setting
Locknut Hex Size 15 mm
Locknut Torque 9 - 10 Nm
Seal kit - Cartridge Buna: 990-022-007
Seal kit - Cartridge Polyurethane: 990-022-002
Seal kit - Cartridge Viton: 990-022-006
(L)CONTROL
L Standard Screw Adjustment
C Tamper Resistant - Factory Set
(G)FUNCTIONAL SETTING RANGE
G 2000 - 6000 psi (140 - 420 bar), 4000 psi
(280 bar) Standard Setting
F 1000 - 2500 psi (70 - 175 bar), 2000 psi
(140 bar) Standard Setting
(N)SEAL MATERIAL
N Buna-N
V Viton
MATERIAL/COATING
Standard Material/Coating
/AP Stainless Steel, Passivated
/LH Mild Steel, Zinc-Nickel
snhy.com/
CWEG
TECHNICAL FEATURES
Counterbalance valves should be set at least 1.3 times the maximum load induced pressure.
Turn adjustment clockwise to decrease setting and release load.
Full clockwise setting is 200 psi (14 bar).
Model Code Example: CWEGLGNCONFIGURATION OPTIONS