©Copyright Task Force Tips, Inc. 2002 - 2015
LIN-035 June 16, 2015 Rev15
18
5.1.5.2 TRIGGER FLOW CONTROL SPEED ADJUSTMENT
The IMPULSE valve contains a slow close mechanism to prevent
the nozzle from slamming off if the trigger is suddenly released.
The closing speed is set at the factory to be slow enough to
reduce water hammer, (“water hammer” is always present in
any valve when it is shut off. The slow close mechanism will
reduce this but cannot eliminate it completely) but fast enough
to reduce the potential danger of hose whipping from a dropped
nozzle. The closing speed may be adjusted as shown in the
fi gure.5.1.5.2.
Slower
Close
Faster
Close
Do not unscrew the adjuster past the end of the hand grip (to unscrew it too far could result in the loss of dampening fl uid.)
WARNING
As the closing time is increased so does the risk of injury from an out of control nozzle. A fl owing
nozzle can cause injury within the fi rst second of lost control. Use caution when adjusting the
closing speed and always verify performance after adjustment.
5.2 PATTERN AND FLUSH CONTROL
5.2.1 PATTERN CONTROL
TFT’s nozzles have full pattern control from straight stream to wide fog. Turning the stream shaper clockwise (as seen from the
operating position behind the nozzle) moves the shaper to the straight stream position. Turning the shaper counterclockwise will
result in an increasingly wider pattern.
Since the stream trim point varies with fl ow, the stream should be “trimmed” after changing the fl ow to obtain the straightest and
farthest reaching stream. To properly trim the stream, fi rst open the pattern to narrow fog. Then close the stream to parallel to give
maximum reach.
Note: Turning the shaper further forward will cause stream crossover and reduce the effective reach of the
nozzle.
The nozzle reaction is greatest when the shaper is in the straight stream position. The nozzle operator must be prepared for a change
in reaction as the pattern is changed.
5.1.5.1 IMPULSE TRIGGER LOCK
Use an 1/8” (3mm) punch to push out pin
and remove lock if the lock is not desired.
LOCK
TRIGGER
LOCK PIVOT PIN
To Lock:
Push on the lock while pulling back the trigger to
engage one of the four locked positions.
To Release:
Pull back slightly on trigger without any pressure
on the lock. The spring loaded lock will automatically move to the
unlocked position.
WARNING
When the trigger lock is engaged, the nozzle will not shut off if dropped. Always shut off nozzle
before releasing the pistol grip to avoid injury from an out of control nozzle.
