Danfoss PVBS 32 Data sheet
Data Sheet
Spool
PVBS 32
Regenerative spool: 11113440
To meet the Tier 4 regulations, continuous need of HP
savings, and to meet the demand on high efficiency
and high flow demands, a regenerative PVBS spool
has been developed.
The spool is regenerative in A-direction, meaning the
oil returning in the B-port will be led to A-port to
increase portflow and to save pump flow.
The spool could be used on selected cylinder
functions with limited power demands, such as
forrest machinery and truck mounted cranes where
tool weight and gravity helps the cylinder move in
one direction.
Features
•
P-B 65 l/min
•
P-A Regen, max flow is depending on
system setup
•
Prepared for PVB modules with LS A/B
shuttle valve
•
No float position
•
Deadband ±1.5 mm
•
Can only be used in different cylinder
applications
•
Other features available on a request
Cut-away of PVB 32 module with PVBS
regenerative spool, shown in regenerative
position, oil returning in B port will be lead
to A port, to increase port flow, and to save
pumpflow.
Comprehensive technical literature online
at powersolutions.danfoss.com
©
Danfoss | Jul 2016 L1202131 | AI00000134en-US0202 | 1
P005601
A B
T
Pump pressure
w
Cylinder movement
P
Things to consider when using a regnerative spool in a hydraulic system:
•
Can only be used in cylinder-applications
•
Regenerative port must be connected to the head-side of the cylinder
•
Cylinder ratio will determine how much flow will be led from B to A port
•
Same pressure on both head and rod side of cylinder; the rod area is most effective
•
System pressure may raise to max pressure in regenerative direction due to he small effective cylinderarea.
Technical data
Spool travel A-direction 5 mm [0.197 in]
B-direction 7 mm [0.275 in]
Float position spool No Float Position
Dead band Standard ± 1.5 mm [±0.059 in]
1
Mechanical limitation in spool
1
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already on order provided that such alterations can be made without changes being necessary in specifications already agreed.
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2 | © Danfoss | Jul 2016 L1202131 | AI00000134en-US0202
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