MODEL
CBIA
3:1 pilot ratio, standard capacity counterbalance valve
SERIES 4 / CAPACITY: 480 L/min. / CAVITY: T-19A
3-Port Non-vented
3-Port Non-vented, Fixed Setting
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.
Other names for this valve include motion control valve and over center valve.
TECHNICAL DATA
Pilot Ratio 3:1
Maximum Recommended Load Pressure at Maximum Setting 215 bar
Maximum Setting 280 bar
Factory Pressure Settings Established at 30 cc/min.
Maximum Valve Leakage at Reseat 0,3 cc/min.
Adjustment - Number of Counterclockwise Turns to Increase Setting 3.75
Reseat >85% of setting
Locknut Hex Size 19,1 mm
Locknut Torque 35 - 40 Nm
Seal kit - Cartridge Buna: 990-019-007
Seal kit - Cartridge Polyurethane: 990-019-002
Seal kit - Cartridge Viton: 990-019-006
(L)CONTROL
L Standard Screw Adjustment
C Tamper Resistant - Factory Set
(H)FUNCTIONAL SETTING RANGE
H 1000 - 4000 psi w/25 psi Check (70 - 280
bar w/1,7 bar Check), 3000 psi (210 bar)
Standard Setting
A 1000 - 4000 psi w/4 psi Check (70 - 280
bar w/0,3 bar Check), 3000 psi (210 bar)
Standard Setting
B 400 - 1500 psi w/4 psi Check (28 - 105
bar w/0,3 bar Check), 1000 psi (70 bar)
Standard Setting
I 400 - 1500 psi w/25 psi Check (28 - 105
bar w/1,7 bar Check), 1000 psi (70 bar)
(N)SEAL MATERIAL
N Buna-N
V Viton
MATERIAL/COATING
Standard Material/Coating
/AP Stainless Steel, Passivated
/LH Mild Steel, Zinc-Nickel
snhy.com/
CBIA
Model Code Example: CBIALHNCONFIGURATION OPTIONS