The Viper Foam Gun RT300S is a pro-grade, garden-hose sprayer that lays down rich, even foam for fast condenser and evaporator coil cleaning. Dial your 5 dilution ratios on the fly—no pre-mixing—so you finish quicker, safer, and with fewer call-backs. Too easy.

Key Features & Trade Benefits

• No pre-mixing required — fill with full-strength concentrate, connect to a garden hose, and select a ratio. Benefit: fewer steps, less mucking about on site.
• 5 dilution ratios — 5:1, 10:1, 20:1, 40:1, 80:1 via custom-jetted dial. Benefit: consistent chemistry for greasy rooftops or light maintenance cleans.
• Foam + jet spray options — swap between dense foam coverage and a rinse/jet pattern. Benefit: faster dwell, better penetration, tidy rinse-off.
• Durable, field-ready build — purpose-designed for HVAC/R cleaners (Viper Brite, Heavy Duty, Venom Packs, EVAP+). Benefit: one gun for most coil chemicals (use indoor-safe chem for evaporators).
• Garden-hose connection — no pump or compressor needed. Benefit: lighten the loadout; get cleaning in minutes.

Why This Product Matters

On a windy Sydney roof at 38 °C, the last thing you want is fiddling with measuring jugs. With the RT300S, you click to 10:1, foam the condenser, and watch the muck slide. One tech told us, “two passes and she’ll be right—head pressure drops and the call-backs stop.” That’s fair dinkum productivity.

Browse the whole Viper range for the right chemical for the job: Viper Cleaning Chemicals.

Pro Tip

Pick the chemical for the location: use Viper Brite outdoors on condensers; for indoor evaporators, grab a no-rinse option like Viper EVAP+ 3.785 L. Always isolate power, protect electronics, allow dwell, and rinse when the label says—no dramas.

Compatibility & System Info

• Works with: Viper Brite, Viper Heavy Duty, Venom Pack Brightener/Condenser/EVAP, and EVAP+.
• Application areas: Outdoor condensers; indoor evaporators (with indoor-safe cleaners only). Avoid pitted or severely corroded fins.
• Local install note: For dusty Perth plant decks or coastal sites, foam helps push out red dust/salt. Rinse responsibly and follow WHS chemical handling.

What’s Included

• Viper Foam Gun Sprayer RT300S body (garden-hose connector)
• Foam nozzle and jet/rinse nozzle (2-in-1 use)
• Adjustable metering dial (5 ratios)
• 64 oz (≈1.9 L) chemical tank

Specifications

Ratios and no-mix directions per manufacturer bulletin.

Warranty & Returns

Backed by manufacturer support. For store policy, see Shipping & Returns.

FAQs

Q: Do I need to pre-mix chemicals?
A: Nope. Fill with full-strength concentrate and set your dilution on the dial.

Q: Can I use this on evaporators?
A: Yes—with an evaporator-safe chemical like EVAP+. Don’t use outdoor brighteners (e.g., Brite) inside.

Q: What PPE should I wear?
A: Follow the product SDS and Australian WHS guidance—gloves, eye protection, and avoid aerosol drift.

Q: Foam or jet?
A: Foam for dwell and penetration; jet for rinsing. The RT300S gives you both in one tool—bloody handy.

Related Products

• Viper Brite 3.785 L — a helpful match when you need brightening on oxidised outdoor coils.
• Viper Heavy Duty 3.785 L — a solid pick when you want strong degreasing without brightening.
• Viper EVAP+ 3.785 L — ideal for indoor coils where no-rinse is the go.