Part Number: 7655
Category: Pressure Washer Accessories → Spray Nozzles → High-Pressure Spray Nozzles
Type: PNR 1/4" MNPT 40° 5.0 Stainless Steel Spray Nozzle – Pressure Washer Replacement Nozzle

The PNR Stainless Steel Spray Nozzle (Part #7655) is a genuine OEM high-pressure replacement nozzle designed for commercial, industrial, agricultural, and residential pressure washing applications. Featuring a 40-degree fan spray pattern and a 5.0 orifice, this nozzle provides broad, even water distribution for efficient rinsing, washing, and general-purpose cleaning while maintaining consistent operating pressure and flow.

Key Features & Benefits

• Genuine PNR OEM high-pressure spray nozzle
• Part Number: 7655
• Wide 40° fan spray pattern
• 5.0 orifice size
• 1/4" MNPT connection
• Manufactured from AISI 416 stainless steel
• Precision-machined for consistent spray performance
• Corrosion and wear resistant
• Excellent for rinsing and general-purpose cleaning
• Wide spray coverage for improved efficiency
• OEM-quality construction for long service life

Technical Specifications

Part Number: 7655

Manufacturer: PNR

Product Type: High-Pressure Spray Nozzle

Thread Size: 1/4" MNPT

Spray Pattern: 40°

Orifice Size: 5.0

Nozzle Size: 5.0

Material: AISI 416 Stainless Steel

OEM Replacement: Yes

Compatible Applications

Suitable for use with:

• Pressure washer spray guns
• Pressure washer spray wands
• Pressure washer lances
• Commercial pressure washers
• Industrial cleaning equipment
• Vehicle washing
• Fleet washing
• Building exterior cleaning
• Agricultural equipment cleaning
• General-purpose pressure washing

Always verify the thread size, nozzle size, operating pressure, and machine flow requirements before ordering.

Function of the Spray Nozzle

The PNR 7655 spray nozzle helps:

• Produce a wide 40° high-pressure fan spray
• Deliver even water distribution across large surfaces
• Remove dirt, dust, mud, and loose debris efficiently
• Maintain consistent operating pressure and water flow
• Improve cleaning efficiency for routine washing and rinsing applications

Its 40° spray pattern provides an excellent balance of cleaning performance and surface coverage, making it ideal for washing vehicles, siding, decks, patios, equipment, and other large surfaces.

Common Signs Replacement Is Needed

Replace the nozzle if you notice:

• Uneven or distorted spray pattern
• Reduced cleaning pressure
• Worn or enlarged orifice
• Clogged nozzle
• Damaged threads
• Corrosion or physical damage
• Increased water consumption caused by nozzle wear

Replacing a worn nozzle restores proper spray pattern, operating pressure, and cleaning efficiency.

Installation & Service Notes

• Turn off the pressure washer and relieve system pressure before replacing the nozzle.
• Verify compatibility with the 1/4" MNPT connection and 5.0 orifice size.
• Install the nozzle securely without overtightening the stainless steel threads.
• Inspect the nozzle seat and threads for debris before installation.
• Test the spray pattern after installation to verify proper operation.
• Replace the nozzle if wear causes pressure loss or an inconsistent spray pattern.

Important: Match the 5.0 orifice size to your pressure washer's GPM and PSI specifications to maintain proper operating pressure and cleaning performance. The 40° spray pattern is well suited for rinsing and general cleaning applications that require broad, even coverage with moderate cleaning force.

Maintenance Recommendations

• Flush the nozzle with clean water after each use.
• Inspect the orifice regularly for mineral deposits, debris, or wear.
• Clean clogged nozzles using an approved nozzle cleaning tool—avoid using wire or sharp objects that may enlarge the precision orifice.
• Store the nozzle in a clean, dry location when not in use.
• Use only genuine OEM replacement nozzles to maintain proper spray pattern, operating pressure, and long service life.