Part Number: 7188
Category: Pressure Washer Accessories → Rotary & Turbo Nozzles
Type: Hydra-Flex Aqua Rocket Turbo Pressure Washer Nozzle – 4.0 Orifice 5600 PSI Rotating Nozzle

The Hydra-Flex Aqua Rocket Turbo Nozzle (Part #7188) is a genuine OEM rotary pressure washer nozzle engineered for professional contractors, industrial cleaning crews, and heavy-duty pressure washing applications. Combining the concentrated cleaning force of a 0° spray with a high-speed rotating action, the Aqua Rocket delivers exceptional cleaning power while covering a significantly larger area than a standard zero-degree nozzle, increasing productivity on demanding cleaning jobs.

Key Features & Benefits

• Genuine Hydra-Flex OEM turbo nozzle
• Part Number: 7188
• Aqua Rocket rotary pressure washer nozzle
• 4.0 orifice size
• Rotating high-impact spray pattern
• Rated for pressures up to 5,600 PSI
• Maximum operating temperature of 212°F
• 1/4" FPT threaded inlet
• Cleans faster than standard fan nozzles
• Combines concentrated cleaning force with wider coverage
• Durable construction for commercial and industrial use
• OEM-quality performance and long service life

Technical Specifications

Part Number: 7188

Manufacturer: Hydra-Flex

Model: Aqua Rocket

Product Type: Rotary / Turbo Pressure Washer Nozzle

Nozzle Size: 4.0

Inlet Thread: 1/4" FPT

Maximum Pressure: 5,600 PSI

Maximum Operating Temperature: 212°F

OEM Replacement: Yes

Compatible Applications

Suitable for use with:

• Commercial pressure washers
• Industrial pressure washers
• Hot and cold water pressure washers
• Pressure washer spray guns
• Pressure washer spray wands
• Pressure washer lances
• Heavy equipment cleaning
• Construction equipment maintenance
• Agricultural equipment cleaning
• Concrete and masonry cleaning
• Fleet washing
• Industrial facility maintenance

Always verify nozzle size, operating pressure, flow rate, and thread compatibility before ordering.

Function of the Turbo Nozzle

The Hydra-Flex Aqua Rocket helps:

• Produce a high-speed rotating spray pattern
• Combine the impact of a concentrated 0° spray with wider cleaning coverage
• Remove stubborn dirt, grease, oil, mud, paint residue, mildew, and heavy buildup
• Increase cleaning speed while reducing operator fatigue
• Deliver consistent, professional-grade cleaning performance

Its rotating spray action provides significantly greater cleaning efficiency than standard fan nozzles, making it ideal for demanding commercial and industrial cleaning applications.

Common Signs Replacement Is Needed

Replace the turbo nozzle if you notice:

• Loss of rotating action
• Reduced cleaning performance
• Uneven or inconsistent spray pattern
• Internal wear
• Water leakage
• Damaged threads
• Excessive vibration or unusual operating noise

Replacing a worn turbo nozzle restores maximum cleaning power, spray consistency, and overall pressure washer performance.

Installation & Service Notes

• Turn off the pressure washer and relieve system pressure before installation.
• Verify compatibility with the 1/4" FPT inlet and 4.0 nozzle size.
• Install the nozzle securely without overtightening the threads.
• Inspect threads and sealing surfaces before installation.
• Test the rotating spray after startup to verify proper operation.
• Replace the nozzle if rotation becomes inconsistent or cleaning performance declines.

Important: Match the 4.0 orifice size to your pressure washer's GPM and PSI specifications to maintain proper operating pressure and maximize cleaning performance. The Aqua Rocket Turbo Nozzle is intended for use on durable surfaces such as concrete, stone, steel, heavy equipment, and industrial machinery. Avoid using the rotating high-impact spray on delicate finishes, painted surfaces, wood, glass, or other materials that could be damaged by concentrated pressure.

Maintenance Recommendations

• Flush the nozzle thoroughly with clean water after each use.
• Inspect the rotating assembly regularly for debris or signs of wear.
• Clean the nozzle if spray performance decreases—do not insert wire or sharp objects into the nozzle opening.
• Store the nozzle in a clean, dry location when not in use.
• Use only genuine OEM Hydra-Flex replacement parts to maintain proper rotation, operating pressure, cleaning efficiency, and long-term reliability.