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Coil Gun

  • Quick-disconnect feature
  • Five mix ratio settings -  3:1, 4:1, 6:1, 9:1 & 10:1
  • 2- quart capacity
  • Foam wand to enhance foaming
  • Deflector tip to fan out spray
  • Connects to optional Coil Gun Probe accessory (4774-1) for 90 degree direction of spray inside the coil


For spraying coil cleaners such as Nu-Brite®, CalClean®, HD CalClean®, Alka-Brite® Plus, Tri-Pow’r® HD or any of the other quality Nu-Calgon coil cleaners for cleaning air cooled condensers, evaporator coils, etc. No pre-mixing is necessary as chemical and water are automatically blended in mixing head as you spray. Use for coil cleaning as well as in food preparation areas, wash rooms, or any situation where use of water-diluted chemicals are required.

Recommended water pressure 40 to 60 psi, although 40-90 is acceptable.

The Coil Gun Probe provides easy access for “inside out” cleaning of coils. Probe sold separately.

Packaging Size Part Number Additional Info
1 each 4774-0


Connect water supply hose to pistol grip shut-off-valve handle. Remove and fill bottle with liquid chemical concentrate.


CAUTION: To prevent chemical loss from bottle out of air vent hole in mixing head, sprayer must remain in upright position at all times.

Turn dial to desired mixing rate letter to siphon chemical at the specific ratio. This will automatically mix chemical with water at the factory pre-set dilution rate selected on dial. Pistol grip shut-off-valve lever must be fully depressed for accurate mixing.

Also, use the Deflector Tip for covering large areas and remove it for a solid stream that will carry up to 25 feet. Use the foam wand for enhanced foam application.

For a powerful clear water rinse, remove handle from siphon head and use as an insulated water nozzle.

Pull back snap ring on female quick coupler to detach or reattach handle to mixing head. For a more gentle rinse without removing handle, move dial to off setting.

IMPORTANT NOTE: Handle supplied with gun contains an anti-siphon to protect water supply from accidental chemical contamination. (Note: A slight discharge of water from base of handle when water is turned off is normal and indicates anti-siphon is functioning properly.) DO NOT USE ANY OTHER HANDLE WITH THIS SPRAYER. If replacement is needed, a handle with anti-siphon installed should be obtained from your supplier.

Also, use the Deflector Tip for covering large areas, and remove it for a solid stream that will carry up to 25 feet. Use the foam wand for enhanced foam application.

Product Information:

Literature Downloads

Download the product bulletin and other relevant literature here.


Download a low resolution file of the product label here.

Product Safety

RTK Information

2611 Schuetz Rd. St. Louis, MO 63043
  • Telephone: 800.554.5499
  • Email:
  • Hours: Mon–Fri: 8:00am - 5:00pm (Central Time)

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