Part Number: 7634
Category: Pressure Washer Accessories → Spray Nozzles → High-Pressure Spray Nozzles
Type: PNR 1/4" MNPT 25° 6.0 Stainless Steel Spray Nozzle – Pressure Washer Replacement Nozzle

The PNR Stainless Steel Spray Nozzle (Part #7634) is a genuine OEM high-pressure replacement nozzle engineered for commercial, industrial, agricultural, and residential pressure washing applications. Featuring a 25-degree fan spray pattern and a 6.0 orifice, this nozzle provides an excellent balance of concentrated cleaning power and broad surface coverage, making it ideal for general-purpose pressure washing, fleet maintenance, equipment cleaning, and exterior surface washing.

Key Features & Benefits

• Genuine PNR OEM high-pressure spray nozzle
• Part Number: 7634
• Versatile 25° fan spray pattern
• 6.0 orifice size
• 1/4" MNPT connection
• Manufactured from AISI 416 stainless steel
• Precision-machined for consistent spray performance
• Corrosion and wear resistant
• Excellent balance of cleaning power and surface coverage
• Ideal for commercial and industrial pressure washing
• OEM-quality construction for long service life

Technical Specifications

Part Number: 7634

Manufacturer: PNR

Product Type: High-Pressure Spray Nozzle

Thread Size: 1/4" MNPT

Spray Pattern: 25°

Orifice Size: 6.0

Nozzle Size: 6.0

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
• Fleet washing
• Heavy equipment cleaning
• Agricultural equipment cleaning
• Concrete and masonry cleaning
• Building exterior cleaning
• General-purpose pressure washing

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

Function of the Spray Nozzle

The PNR 7634 spray nozzle helps:

• Produce a controlled 25° high-pressure fan spray
• Deliver strong cleaning performance with broad surface coverage
• Remove dirt, grease, oil, mud, mildew, and grime from a variety of surfaces
• Maintain consistent operating pressure and water flow
• Improve cleaning efficiency for commercial and residential pressure washing

Its 25° spray pattern and 6.0 orifice provide an ideal combination of cleaning force and coverage, making it suitable for concrete, vehicles, equipment, siding, agricultural machinery, and other durable 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 flow caused by nozzle wear resulting in pressure loss

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

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 6.0 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 6.0 orifice size to your pressure washer's GPM and PSI specifications to maintain proper operating pressure and cleaning performance. The 25° spray pattern offers an excellent balance of cleaning power and surface coverage, making it one of the most versatile choices for professional and residential pressure washing.

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 or damage 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.