Nozzle Maintenance

Installtion & Maintenance

All operating and set-up instructions assume nozzles to be new or well maintained. If nozzles are worn out, tips or orifices worn or distorted or deflector surfaces marred, pattern distortions may occur and metering may be off. Timely maintenance and replacement of nozzles, when necessary, is critical to nozzle performance.

    • Use hand pressure only when installing nozzles and check valves. Do not use wrenches.
    • Use Teflon paste, instead of Teflon tape. Tape has minute strands which can cause drip problems.
    • Mount CP-01, CP-03, CP-07 and CP-09 nozzles so that liquid is released parallel to the air stream in non-turbulent areas on the spray boom. CP-11TT flat fan nozzle bodies have a built-in 8° down angle. The flat fan nozzle may be angled more sharply into the airstream depending on droplet spectrum desired.
    • Check tension on each nozzle and check valve cap after installation. Tension should be loose enough on the nozzle to allow changing of orifice or deflector by hand but tight enough to prevent movement once set. Check valve cap should be tight.
    • Use blocked tees on outermost nozzles at each end of boom. Feed these nozzles from end of boom through 3/8th (no smaller than 5/16th) line. This prevents air build-up at the boom tip and ensures proper check valve function.
    • Check nozzles for tightness each day for several days after initial installation. Components tend to “seat” and only need to be checked once a week after that occurs.
    • Set nozzle to largest orifice and pull stem on check valve to flush debris when dripping or leaking occurs.
    • If the white Teflon® seal between the body and selector or tip wheel is scratched or scored, it will not seal properly and the nozzle will leak. When replacing this seal, the beveled edge goes against the nozzle body.
    • Be sure aircraft boom and pump filters and mix station filters are working properly. Poorly designed or maintained systems can cause leaking problems.

    Parts are available for all CP’s nozzles and check valves. Call your CP® aerial distributor to purchase parts.