Page 648 - Hydrover-hydraulic-integrated-circuits-catalogue
P. 648
COMPONENTS
COUNTERBALANCE, STANDARD POPPET TYPE
COUNTERBALANCE, STANDARD POPPET TYPE
DIFFERENTIAL AREA DIFFERENTIAL AREA
SPECIAL CAVITY SPECIAL CAVITY
VBSO-SEC-30 VBSO-SEC-30 04.52.04 - X - 99 - Z 04.52.04 - X - 99 - Z
TECHNICAL DATA
Max. pressure: 5000 psi (350 bar)
Max. flow: 16 gpm (60 l/min)
Special cavity : 063 (see page CT.S.002.U)
Installation torque : 86-95 ft-lb (116-128 Nm)
Weight: 0.551 lbs (0.250 Kg)
Pressure setting: at least 1.3 times the load induced
When pressure at 3 rises above the spring bias pressure, the check seat is pushed pressure
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.
X PILOT RATIO
03 4.2 : 1
SPRINGS OPTIONS
Z Adj. press. Press. increase Standard setting
range psi psi / turn psi (bar) Ordering code Description
(bar) (bar/turn) (Q=5 l/min)
812
20 870-3000 (56) 2900
(200)
(60-210)
2001
35 1450-5000 (138) 5000
(100-350)
(350)
11.04.23.002
Sealing cap
Special settings available. Contact factory authorized
representative for ordering code.
January 2025 edition
648 General catalogue Page. AS5.050
Rev.0605