COUNTERBALANCE
,
STANDARD POPPET TYPE
DIFFERENTIAL AREA
SPECIAL CAVITY
VBSO-SEC-90 04.52.19 - X - 99 - Z
Rev.0605 Page. AS5.060
When pressure at 3 rises above the spring bias pressure, the check seat is pushed
away from the piston and flow is allowed from 3 to 2. When load pressure at 2 rises
above the pressure setting, the direct-acting, differential area relief function is
activated and flow is relieved from 2 to 3. With pilot pressure at 1, the pressure
setting is reduced in proportion to the stated ratio of the valve, until fully open with
free-flow from 2 to 3. The spring chamber is drained to 3, and any back-pressure at
3 is additive to the pressure setting in all functions.
SPRINGS
Z
Adj. press.
range psi
(bar)
Press. increase
psi / turn
(bar/turn)
Standard setting
psi (bar)
(Q=5 l/min)
35
1450-5000
(100-350)
2001
(138)
5000
(350)
TECHNICAL DATA
Pressure setting: at least 1.3 times the load induced
pressure
Max. pressure: 5000 psi (350 bar)
Max. flow: 24 gpm (90 l/min)
Special cavity : 625 (see page CT.S.003.U)
Installation torque : 105-117 ft-lb (142-158 Nm)
Weight: 1.323 lbs (0.600 Kg)
X
PILOT RATIO
03
4.2 : 1
OPTIONS
Ordering code Description
03.05.01.001
Sealing cap
11.04.23.002
Tamper resistant cap
Special settings available. Contact factory authorized
representative for ordering code.
COUNTERBALANCE, STANDARD POPPET TYPE
DIFFERENTIAL AREA
SPECIAL CAVITY
VBSO-SEC-90 04.52.19 - X - 99 - Z
