Pvbs Main Spools - Danfoss PVG-EX 32 Technical Information

Technical Information
PVG-EX 32 Proportional Valve Group

PVBS Main Spools

© Danfoss | June 2019
The main spools (PVBS) determine the flow out of the work section or the pressure build up, and are
based on a generic platform with a wide selection of additional features, enabling you to tailor the PVBS
to suit the demands of any hydraulic system and any function.
The PVBS main spool can be activated in three different ways:
•
Mechanically by a PVM lever
•
Electrically by a PVE/PVHC actuator
•
Hydraulically by a PVH actuator
PVBS main spool
PVBS main spool dimensions
110 [4.33]
159 [6.26 ]
Weight: 0.25 kg [ 0.55 lb]
Technical specification
Parameter
Fluid temperature
Fluid viscosity
Fluid cleanliness
Operating temperature
Flow Control Spools
Flow control spools are for work sections where you want to control the
(FC)
speed (flow) of the work port
Pressure Control
Pressure control spools are for work sections where you want to control the
Spools (PC)
power (pressure) of the work port
For more information on where to use flow control or pressure control spools see application guide
AB00000079 - "Using flow or pressure control spools"
Closed neutral
In neutral position and inside of the deadband area the connection to tank is
position
closed
Throttled open In neutral position and inside of the deadband area the connection to tank is 10
neutral position
% of the full flow function
Open/closed neutral
In total neutral position the connection to tank is less than 10 % of the full flow
position (drain)
function. But when moving the spool out of neutral position but still within
dead band area the connection will close.
21.5
[0.85]
Minimum Recommended range
-30°C [-22°F] 30 to 60°C [86 to 140°F]
2
4 mm /s [39 SUS] 12 to 75 mm
23/19/16 (according to ISO 4406)
Ambient: -30 to 60°C [-22 to 140°F]
Maximum
90° [194°F]
2 2
/s [65 to 347 SUS] 460 mm /s [2128 SUS]
BC290860493426en-000103 | 75