Page 624 - Hydrover-hydraulic-integrated-circuits-catalogue

COMPONENTS

VMSN-08A

Priority unloading pilot operated

Common cavity, Size 08

RE 18318-16
Edition: 03.2016
VMSN-08A 04.75.21 - X - 56 - Z Replaces: 12.2011

Technical data
Max. operating pressure 350 bar (5000 psi)
port 1-2
Max. pressure admitted 50 bar (750 psi)
port 3
Max. flow 3 l/min (1 gpm)
Max. internal leakage 1) 15 drops/min.
Fluid temperature range -30 to 100 °C (-22 to 212 °F)
Installation torque 34 - 41 Nm (25 - 30 ft-lbs)
Weight 0.14 kg (0.31 lbs)
Cavity CA-08A-3N (see data sheet 18325-70)
Description Lines bodies and standard Please refer to section “Hydraulic
Flow is blocked from 2 to 3 until pressure increases to meet assemblies integrated circuit” or consult factory
the selected valve setting, lifting the small, pilot-stage poppet Seal kit 2) Code: RG08A3010520100
from its seat. This action exhausts oil above the main-stage material no: R930000861
piston (spool type), allowing it to shift fully and unload flow Fluids Mineral-based or synthetics with
from 2 through 3 with minimal pressure drop. Similarly, when lubricating properties
remote pilot pressure at 1 exceeds the pressure setting, a at viscosities of 10 to 500 mm /s (cSt)
2
secondary piston lifts the pilot-stage poppet from its seat, Recommended degree of Nominal value max. 10µm (NAS 8) /
again exhausting fluid from 2 through 3. fluid contamination ISO 4406 19/17/14
Installation position No restrictions
Other Technical Data See data sheet 18350-50
1) At 80% of pressure setting
2) Only external seals for 10 valves

Characteristic curve

Pressure Δp

Flow Q

RE 18318-16/03.2016, Bosch Rexroth Oil Control S.p.A.

624 General catalogue September 2023 edition