Purpose Built Solutions

Automatic Pressure Control for Optimum Reach

Accurate Spray Patterns

Manual Control: Models that use a twist-type pattern control offer a continuously variable pattern from narrow to wide. Turning the shaper clockwise, as seen from the operating position behind the nozzle, moves the shaper to the straight stream position. Turning the shaper counterclockwise results in an increasingly wider pattern. An indicator band on the nozzle barrel shows which position the shaper is in by progressively uncovering symbols for flushing, wide spray, and straight stream.

Electronic Control: On models that use an electric pattern control, a continuously variable pattern from narrow to wide is available by operating the electric actuator according to the directions supplied with the actuator control panel. Extending the shaper outwards, as seen from behind the nozzle, moves the shaper to the straight stream position. Retracting the shaper inwards will result in an increasingly wider pattern. The actuator detects the motor current rise at each end of its stroke and stops the motor instantly, thus making limit switches unnecessary. Manual override is possible by using the external knob or hex head to drive the motor shaft. Turning the shaft counterclockwise, as seen from the operating position behind the nozzle, extends the shape towards the straight stream position. Turning the knob clockwise retracts the shaper towards the wide spray position. If a 5/16” hex wrench is used, do not force the shaft further after it stops firmly at each end of the stroke. Exceeding 40 in-lb (4.5 N m) will damage the actuator.

Flush Control

Small debris may get caught inside the nozzle. This trapped material will cause poor stream quality, shortened reach, and reduced flow. To remove small debris, the nozzle may be flushed as follows:

Trigger Nozzle Flushing: While still flowing fluid, turn the shaper counterclockwise past the wide spray position (increased resistance to turning will be felt on the shaper as the nozzle goes into flush.) This will open the nozzle, allowing debris to pass through. Rotate the shaper clockwise and out of fl ush to continue normal operation. During flush, the nozzle will lose much of its reaction force and reach as the pressure drops. The nozzle operator must be prepared for an increase in reaction, reach, and pressure when returning the nozzle from the flush position to normal operation to retain control of the nozzle and stream. Operating the nozzle in the flush position will flow increased volumes of fluid. Operate in the flush position only when necessary and only for a short amount of time to prevent fluid waste.

Electric Nozzle Flushing: While still flowing fluid, retract the shaper backward past the wide spray position (as viewed from behind the nozzle) until it reaches its stop. This will open the nozzle, allowing debris to pass through. When the debris has been flushed out, extend the shaper outwards until it is out of flush as determined by the markings on the barrel and the force of the stream to continue normal operation. Flushing may also be accomplished in the manual override mode of operation by moving past the wide spray position. During fl ush, the nozzle will lose much of its reaction force and reach as the pressure drops. Operating the nozzle in the flush position will flow increased volumes of fluid. To prevent fluid waste, only operate in the flush position when necessary to pass debris.