Water Handling Equipment Guide - National Wildfire Coordinating ...

WATER DELIVERY COMPONENTS AND ACCESSORIES
Nozzles
h. Weight
Weight is an important factor, so
lightweight material is desirable. Most allbrass
nozzles have been eliminated from
practical wildland fire use. Nozzles should
preferably weigh no more than 2 pounds.
Lightweight plastic materials may not
withstand higher working pressures and
rigorous use under wildland fire
applications.
i. Cost
Simple, trouble-free construction providing
the performance listed in items “a” through
“h” is necessary. Expensive materials,
such as brass, and highly polished or
plated hardware and accessories, are not
necessary for wildland fire applications.
3. Nozzle types and descriptions
For simplicity, nozzles can be grouped into
several broad classes. If the nozzle can
produce either a straight stream or a spray, it
is classed as a combination type. A few
nozzles can produce both patterns
simultaneously, but their flow requirements
are high. The more common types are listed as
follows:
a. Ball shutoff with tip
Representative nozzles in widespread use
that meet most of the above requirements
are available under Forest Service
Specification 5100-240 (nozzle, twin-tip,
shutoff, 1-inch base, straight stream and
fog tip). Twin tip nozzles are furnished by
the Federal Supply Service as catalog item
NSN 4210-00-640-1892; Barrel nozzles
are available under Forest Service
Specification 5100-539 (nozzle with
shutoff, combination barrel). A 1-inch base
is furnished by the Federal Supply Service
as item NSN 4210-01-165-6603. The 12-
inch base is furnished as item 4210-01-
167-1123.
Type: Single-tip, ball or cylinder lever
valve shutoff, 2-inch bore, w-inch GHT
outlet for interchangeable tips.
Action: Sequence shutoff (lever forward),
straight stream or spray.
Available from GSA: NSN 4210-00-203-
3519.
Weight: Approximately 1 pound, 3 ounces.
Base (inlet): 1 inch, 112 NPSH.
Material and finish: Smooth sand-cast
brass, or forged aluminum.
Performance: See twin-tip nozzle
performance table for flow and pressure
ranges.
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