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150 SERIES BIG GUN SPECIFICATION
1. GENERAL:
The 150 Series Nelson Big Gun
of operating in a pressure range from 50 PSI through 120 PSI. The nozzle size range is from .7"
through 1.3" for taper bore nozzles, from .86 through 1.41 for ring type nozzles and from 22mm
through 34mm for taper-ring nozzles. Optional trajectory angles on the SR150 and the F150
shall be 21º 24º and 43º. The SRA150 shall have an adjustable trajectory from 15º through 45º.
Materials used shall be acceptable for most irrigation water conditions. All exposed metal parts
shall be stainless steel, brass, or aluminum. Welds and seals shall be air pressure checked at the
factory to assure against water leakage. The gun shall be provided with optional connections at
the base consisting of Nelson Flange, Metric Flange, ANSI/DIN Flange type, 3", 3 ½" or 4"
Female NPT cast iron flange adapters shall be optional accessories.
2. DESIGN
1. The sprinkler body
sprinkler body
sprinkler body
sprinkler body range tube and drive arm shall be of aluminum construction. The range
sprinkler body
tube shall have non-clog straightener vanes extended the full length of the range tube to
reduce turbulence and provide greater diameter of coverage. All wear points or strike areas
shall be constructed of stainless steel or polyurethane for longer life.
2. The drive arm
drive arm
drive arm shall be equipped with ball bearings at the pivot point and shall have a
drive arm
drive arm
replaceable vaned self-cleaning drive vane. Self-adjusting drive vane to give consistent drive
and arm rate in full operating range. Part circle operation shall be accomplished with dual
drive and reverse drive vane. The ball bearings shall be lubricated and sealed to eliminate the
need of grease zirks and frequent maintenance. The drive spoon shall be vaned for reliable
drive power. The drive arm weight shall be adjustable to increase or decrease the drive power
if desired.
lower bearing
lower bearing
3. The lower bearing
lower bearing
lower bearing assembly shall be constructed with an aluminum housing and shall be
equipped with dual ball bearing for ease of rotation and less wear. The bearing assembly
shall be sealed and lubricated eliminating the need for grease zirks and frequent maintenance.
braking system
braking system
4. The braking system
braking system shall be a constant friction disc brake of Delrin plastic material on brass.
braking system
It shall have pre-load brake springs for proper rotation on uneven terrain. It shall be fully
shielded to prevent contamination from outside sources.
5. The part circle
part circle
part circle models shall be equipped with precise arc control stops that are easily set. They
part circle
part circle
shall be provided with easily accessible bolt heads or flex-handle stops as desired.
6. The sprinkler nozzle options
All nozzle types shall be interchangeable without any adjustment required on the Big Gun
sprinkler.
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
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150 SERIES BIG GUN
sprinklers (models SR150, SRA150 and F150) shall be capable
®
nozzle options
nozzle options
nozzle options
nozzle options shall be available with taper bore, ring or taper-ring type nozzles.
SPECIFICATIONS
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