Nelson 800 Series Quick Start Manual

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VALVE CONTROL FUNCTION:
The
PRESSURE REDUCING MANUAL ON
Valve is a hydraulically operated sleeve type valve with a pressure
reducing pressure control kit and a manual on-off. The flow through
the valve is controlled by a rubber sleeve which is actuated by
hydraulic pressure. When the selector is pointed to the "
then the valve will automatically reduce a higher inlet pressure to a
constant lower downstream pressure. The pressure reducing control
is adjustable to give a constant down stream pressure even with
fluctuating upstream pressure. The manual selector is used to
manually open or close the valve. Pointing the manual selector
handle to " " or "
OPEN CLOSE
Manual Selector handle mid way between "OPEN" and "CLOSE" will
hold the valve partly open.
The information on this sheet is for the
control function with plastic tubing and internal or external filter
OFF
option (items D2 - D4, D12-D13, E1, H2 - H3 control function on
the
VALVE SELECTION GUIDE
Nelson Irrigation Corp. 848 Airport Rd. Walla Walla, WA 99362-2271 USA Tel: 509.525.7660 Fax: 509.525.7907 E-mail: info@nelsonirrigation.com Web site: www.nelsonirrigation.com
800 SERIES CONTROL VALVE — CONTROL FUNCTION and MAINTENANCE
PRESSURE REDUCING MANUAL ON-OFF
- model of the 800 Series Control
OFF
" will override the " " control. Pointing the
AUTO
PRESSURE REDUCING MANUAL ON
apply to this sheet).
" position
AUTO
INTERNAL
FILTER
-
MANUAL
SELECTOR
PRESSURE
REDUCING
CONTROL
D
800PR5