New Holland T8010 Manual page 846

Neutral
All the remote valve sections function in the same
way. In neutral the position of the main valve spool is
spring centered. Pump supply is available to the inlet
ports of all the remote valve sections.
Pump pressure from the inlet is available to the left
end of the pressure compensated flow control spool
by way of an orifice in the center of the hollow
pressure compensated flow control spool. This will
force the spool against the spring. The flow control
spool spring force tries to open up supply flow to the
main valve spool and the intermediate pressure on
the left hand side of the flow control spool tries to
close flow down. Once the intermediate pressure is
high enough to overcome the flow control spring
force the flow control spool blocks the flow path to the
main valve spool. In neutral the inter mediate
pressure is blocked from the work ports by the main
valve spool lands.
Section 35 - Hydraulic Systems, 3PT - Chapter 5
35-5-15
A load check valve is installed into the extend port,
which will prevent the settling of a load (in neutral)
due to main valve spool land leakage. It also serves
as a check valve to prevent a drop in a partially
raised cylinder when that valve is operated.
A signal check valve is installed into the signal port,
which will isolate the highest system signal pressure
from each individual remote valve's operating
pressure. Each remote section is equipped with a
second relief signal check that limits each remote
sections maximum pressure.