Part Number: 7636
Category: Pressure Washer Accessories → Spray Nozzles → High-Pressure Spray Nozzles
Type: PNR 1/4" MNPT 25° 5.5 Stainless Steel Spray Nozzle – Pressure Washer Replacement Nozzle

The PNR Stainless Steel Spray Nozzle (Part #7636) 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 5.5 orifice, this nozzle delivers a balanced combination of cleaning power and surface coverage, making it ideal for general-purpose pressure washing, equipment cleaning, fleet maintenance, and building exterior cleaning.

Key Features & Benefits

• Genuine PNR OEM high-pressure spray nozzle
• Part Number: 7636
• Versatile 25° fan spray pattern
• 5.5 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 coverage
• Ideal for commercial and industrial pressure washing
• OEM-quality construction for long service life

Technical Specifications

Part Number: 7636

Manufacturer: PNR

Product Type: High-Pressure Spray Nozzle

Thread Size: 1/4" MNPT

Spray Pattern: 25°

Orifice Size: 5.5

Nozzle Size: 5.5

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
• 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 7636 spray nozzle helps:

• Produce a controlled 25° high-pressure fan spray
• Deliver effective cleaning power with moderate surface coverage
• Remove dirt, grease, mud, mildew, and grime from a variety of surfaces
• Maintain consistent operating pressure and water flow
• Improve cleaning efficiency for everyday pressure washing applications

Its 25° spray pattern offers an excellent balance between aggressive cleaning and broad coverage, making it a popular choice for routine professional cleaning tasks.

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 5.5 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 5.5 orifice size to your pressure washer's GPM and PSI specifications to maintain proper operating pressure and maximize cleaning performance. The 25° spray pattern is suitable for most general-purpose cleaning applications and provides an effective balance of cleaning force and coverage.

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.