5.0 NOZZLE CONTROLS
Nozzle control valves must be opened slowly to eliminate unnecessary strain on the hose and couplings and reduce pressure surges.
5.1 FLOW CONTROL
5.1.1 LEVER TYPE FLOW CONTROL
On models that use a lever type valve handle, the nozzle is shut off when the handle is fully forward. The valve handle has detented
fl ow positions. These detent positions allow the nozzle operator to regulate the fl ow of the nozzle depending on the need or what
can be safely and eff ectively handled. TFT recommends the use of a pistol grip for easier handling. For additional stress reduction, a
hose rope or strap may also be used. This permits more eff ective use and ease of advancement, while minimizing strain and fatigue.
Nozzles attached to an in-service hose shall be stored in the off position
5.1.2 TIP ONLY
Tip only nozzles have NO shut-off valve within the nozzle and MUST be used
with a separate ball valve attached to the nozzle. Using a nozzle without a
shutoff is an unsafe practice and should never be done.
5.1.3 BALL SHUTOFF
A separate ball valve for use with Tip Only nozzles is shut off when the valve handle is fully forward. Pulling back on the handle
opens the valve. Open valve slowly to avoid sudden changes in nozzle reaction. Close valve slowly to prevent water hammer. Note:
In partially open positions a ball valve will cause turbulence and adversely aff ect stream quality. Nozzles attached to an in-service
hose shall be stored in the off position.
5.1.4 TWIST SHUTOFF
On models that use a twist fl ow control, the valve is opened or closed by
rotating the valve ring. Rotating the ring clockwise (as seen from the operating
position behind the nozzle) closes the valve, while counterclockwise rotation
opens it. Detents are provided at four intermediate positions and the position
of the valve is shown by the exposed valve position label. Nozzles attached to
an in-service hose shall be stored in the off position.
5.1.5 IMPULSE TRIGGER FLOW CONTROL
Do not intentionally release the nozzle while fl owing and trust the valve to shut off automatically.
WARNING
The trigger nozzle's ability to shut off by itself represents an extra level of safety when following
normal nozzle handling procedures. To rely on it as the sole means of safety increases the risk of
injury from an out of control nozzle. Release nozzle when fl ow has stopped.
©Copyright Task Force Tips, Inc. 2002 - 2016
LOCK
TRIGGER
ON
OFF
NOTE: THE TRIGGER RETURNS TO OFF
IF NOT HELD OR LOCKED
15
LIN-030 May 19, 2016 Rev17
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