Danfoss PVG-EX 32, Техническая информация

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Dampened compensated PVB with LS A/B
The compensated PVB is intended for controlling a work function where the function behavior in terms
of flow and pressures requires independence on the load pressure of other functions used
simultaneously. The dampening of the compensator reaction will slow down the system thereby
removing instability. The integrated LS
A/B
relief valve is used to limit the maximum work port build-up on
the A/B-ports individually.
The dampened compensated PVB with LS A/B features:
•
Integrated LS shuttle network
•
Integrated compensator
•
Integrated adjustable LS
A/B
pressure relief valves
•
External LS
A/B
port connection
•
Optional shock/anti-cavitation valve facility (PVLP)
Dampened compensated PVB with LS A/B schematic
1
0 2
A
B
B
LS
A
LS
T P LS
Technical specification for A/B-port
Max. continuous pressure Max. intermittent pressure Max. rated flow
*
350 bar [5076 psi] 420 bar [6090 psi] 125 l/min [33 US gal/min]
*
With turbo function spool @ max rated flow of 130 l/min is possible
Parameter Minimum Recommended range Maximum
Fluid temperature
-30°C [-22°F] 30 to 60°C [86 to 40°F] 90°C [194°F]
Fluid viscosity
4 mm2/s [39 SUS] 12 to 75 mm2/s [65 to 347
SUS]
460 mm2/s [2128 SUS]
Fluid cleanliness
23/19/16 (according to ISO 4406)
Operating temperature
Ambient: -30 to 60°C [-22 to 140°F]
Technical Information
PVG-EX 32 Proportional Valve Group
PVB Basic Modules
52 | © Danfoss | June 2019 BC290860493426en-000103