VPV Vane Pump
77
VPV Controls
Single Stage Compensator
The single stage control for normal pressure compensation
is a good choice where speed is important and remote
capability is not required. This control available on VPV 16,
25 and 32.
PUMP OUTPUT
INPUT
CASE DRAIN
P
STC
Two Stage Compensator
The two stage pressure compensators are the platform
for most VPV controls. A remote port is standard and
may, or may not be enabled according to the circuit
design. This is the smoothest of the standard pressure
controls, and is the standard pressure compensator for
VPV 45–164.
PUMP OUTPUT
INPUT
CASE DRAIN
P
STC
remote port
Load Sense Compensator
Load sense allows the user to maintain constant flow
regardless of changes in load or in pump shaft rotational
speed. The Whisper™ Pump load sense accomplishes
this by using an external orifice and continually senses a
pressure drop of 100 PSI across this orifice. The mini-
mum
∆
P is 200 PSI, however the pressure drop can be
adjusted to meet circuit requirements. Consult factory.
PUMP
OUTPUT
INPUT
CASE
DRAIN
P
STC
EXTERNAL
SENSE ORFICE
Schematics shown illustrate VPV 45–164 controls with shock clipper integrated and no exterior plumbing required.
The case drain shows an integrated check valve not present in VPV 16, 25 and 32. All controls leave the factory
pre-set at 500 PSI.
Summary of Contents for VPV 100
Page 1: ...Hydraulics VPV Vane Pump Service and Repair Guide ...
Page 99: ...98 VPV Vane Pump Notes ...
Page 100: ......