Zgrao Adjustable Long‑Range Soft Wash Injection Nozzle Kit — 18ft Hose, 4–4.5 GPM 2500–4000 PSI, Downstream Chemical Sprayer

The Zgrao Adjustable Long Range Soft Wash Injection Nozzle Kit is a downstream chemical sprayer system that lets you apply cleaners from an external bucket for safe, long‑reach soft washing with 4–4.5 GPM pressure washers.

Designed to protect your pressure washer pump while delivering targeted cleaning chemicals at a distance, this kit uses an external chemical feed and color‑coded metering tips to control dilution. Built from corrosion‑resistant materials and outfitted with an 18‑foot heat‑resistant suction hose and 1/4" quick connect, it fits machines rated 2500–4000 PSI and 4–4.5 GPM. The adjustable nozzle extends spray reach for gutters, siding, roofs, and other high or awkward surfaces without running chemical through the pump.

How does the downstream injection protect my pressure washer?

Because the system draws cleaning solution from a separate container after the pump, the pump only sees water, not concentrated chemicals. This avoids internal exposure to corrosive detergents and prolongs pump life when compared to systems that send chemicals through the pump.

• External chemical feed prevents chemical contact with pump seals.
• Suction hose and filter keep particulates out of the injector.
• Stainless steel components resist corrosion for long service life.

Can this nozzle reach high gutters and roofs effectively?

The adjustable long‑range nozzle is engineered to extend spray distance and maintain a consistent chemical stream, making it easier to treat high or recessed areas from the ground. Combined with the 18‑foot suction hose and the proper lance or wand setup, you get wider coverage without ladder work in many scenarios.

• Extended spray geometry for high‑reach cleaning.
• Adjustable nozzle settings for broad or focused spray patterns.
• 18 ft hose lets your chemical bucket remain on the ground while you work.

What machines and flow rates is this kit compatible with?

This kit is sized for pressure washers delivering roughly 4–4.5 GPM at pressures between 2500 and 4000 PSI. It works for most residential and light commercial washers in that performance band and is suited to both soft wash and higher‑pressure cleaning tasks when used properly.

• Optimal flow range: 4–4.5 GPM.
• Recommended pressure range: 2500–4000 PSI.
• 1/4" quick connect for simple attachment to standard wands.

How do I adjust chemical dilution and install the hose?

Color‑coded metering tips let you switch dilution quickly, from thicker foam mixes to light soap solutions; actual ratios depend on your washer’s GPM, hose length, and the product used. For easier hose assembly, soften the heat‑resistant suction hose in hot water before pushing on brass fittings.

• Color‑coded tips for approximate dilution control; test for best results.
• Soak hose in hot water to ease brass thread installation.
• Includes suction filter to reduce clog risk and maintain consistent draw.

Who this is for: The Zgrao kit is aimed at contractors, pressure‑washing professionals, and homeowners who want safer chemical application and easier high‑reach cleaning. If you operate a 2500–4000 PSI washer around 4–4.5 GPM and need a durable downstream injector with adjustable dilution and long‑reach capability, this kit provides a complete, serviceable solution without sending chemicals through your pump.