About the flow control valve – Great Plains PTO Kits Single-Section User Manual
Page 20
16
Single-Section PTO Pumps
Great Plains Manufacturing, Inc.
401-885M
2014-06-16
About the Flow Control Valve
The flow control valve adjusts the percent of PTO pump
output that is supplied to the planter hydraulic motors.
The total pump flow, in gpm or liters/min, is also directly
proportional to PTO shaft rpm.
Adjustment typically requires two persons. Pump oil flow
is ideally adjusted with all motors active under simulated
field workload, relying on Magnehelic
®
pressure gauge
readout, and in some cases seed monitor rpm readout.
On Great Plains Yield-Pro
®
single section planters, the
PTO pump supplies one or two hydraulic motors.
The table below summarizes the motor count/use and
readout resource available for the covered planters.
PTO
Kit
Planter
Model(s)
Seed
Drive
First
Motor
Second
Motor
Fan
Adjust
Valve
Location
401-845A
411-163A
YP425A3P, YP625A3P,
YP825A3P Narrow
a
a. See page 25 for detailed compatibility information.
Ground
Meter Fan
-
in. H
2
O
Fan mast
401-846A
411-164A
Seed-only YP425A, YP625A,
YP825A
Ground
Meter Fan
-
in. H
2
O
Fan mast
401-847A
411-165A
Dry fertilizer YP425A, YP625A,
YP825A
Ground
Meter Fan
-
in. H
2
O
Fan mast
401-848A
411-166A
Liquid fertilizer YP425A
Ground
Meter Fan
-
in. H
2
O
Fan mast
401-849A
411-167A
Liquid fertilizer YP625A,
YP825A
Ground
Meter Fan
-
in. H
2
O
Fan mast
401-879A
411-168A
YP825A3P Wide
a
Ground
Meter Fan
-
in. H
2
O
Fan mast
411-016A
2025A, 2525A
Ground
Meter Fan
-
in. H
2
O
Upper Frame Tube
411-035A
411-036A
YP825AR ground drive
Ground
Meter Fan
-
in. H
2
O
Mainframe front
411-037A
411-038A
YP825AR hydraulic drive
Hydraulic
Meter Fan
Seed Drive
in. H
2
O
b
b. Fan rpm is reported by the monitor console on this configuration, and can be used as a reference.
Mainframe front
Figure 14:
Flow Control Valve (YP825A)
34626