
© 2021 Staheli West
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Hydraulic Systems
Closed Center (Preferred)
Open Center
20 GPM Hydraulics
20 GPM Hydraulics
Hydraulic
Block
Hydraulic
Block
Burner Fan &
Feed Water Pump
Burner Fan &
Feed Water Pump
20 GPM
6-8 GPM
6-8 GPM
6-8 GPM
20 GPM
6-8 GPM
6-8 GPM
6-8 GPM
Open Center hydraulic systems will create more heat because they send the hydraulic pump’s full capacity
to the DewPoint. The DewPoint then bypasses all unnecessary flow back to the tractor. If an operator has
the option to run hydraulic pumps coupled at low rpm’s or run one pump at higher rpm’s, they should run
one pump at higher rpm’s. Turning down the flow on the SCV will create more heat within the tractor and is
therefore not a good option. The hydraulic oil cooler will sufficiently cool the oil.
Closed Center hydraulic systems will create less heat because they send only the necessary gpm to the
DewPoint. Closed Center hydraulic systems are preferred for this reason.
• More Heat Generated
• Less Auxiliary Hydraulic Power
• Shorter Hydraulic Oil Filter Life
Summary of Contents for DewPoint 331
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