Part Number: 7662
Category: Pressure Washer Accessories → Spray Nozzles → High-Pressure Spray Nozzles
Type: PNR 1/4" MNPT 40° 3.0 Stainless Steel Spray Nozzle – Pressure Washer Replacement Nozzle

The PNR Stainless Steel Spray Nozzle (Part #7662) is a genuine OEM high-pressure replacement nozzle engineered for commercial, industrial, agricultural, and residential pressure washing applications. Featuring a 40-degree fan spray pattern and a 3.0 orifice, this nozzle delivers controlled water flow with wide, even coverage, making it ideal for general-purpose cleaning, rinsing, and washing delicate or large surfaces without excessive impact.

Key Features & Benefits

• Genuine PNR OEM high-pressure spray nozzle
• Part Number: 7662
• Wide 40° fan spray pattern
• 3.0 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 large-area cleaning
• Suitable for commercial, industrial, and residential pressure washing
• OEM-quality construction for long service life

Technical Specifications

Part Number: 7662

Manufacturer: PNR

Product Type: High-Pressure Spray Nozzle

Thread Size: 1/4" MNPT

Spray Pattern: 40°

Orifice Size: 3.0

Nozzle Size: 3.0

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
• Residential pressure washers
• Industrial cleaning equipment
• Vehicle and fleet washing
• Agricultural equipment cleaning
• Building exterior cleaning
• Decks, patios, driveways, and 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 7662 spray nozzle helps:

• Produce a wide 40° high-pressure fan spray
• Deliver controlled water flow with broad, even coverage
• Remove dirt, dust, mud, detergent, and loose debris from large surfaces
• Maintain consistent operating pressure and water flow
• Improve cleaning efficiency while minimizing the risk of surface damage

Its 40° spray pattern and 3.0 orifice make it ideal for pressure washer systems requiring wide coverage for general cleaning, rinsing, and maintenance applications.

Common Signs Replacement Is Needed

Replace the nozzle if you notice:

• Uneven or distorted spray pattern
• Reduced cleaning performance
• 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 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 3.0 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 3.0 orifice size to your pressure washer's GPM and PSI specifications to maintain proper operating pressure and cleaning performance. The 40° spray pattern provides wide surface coverage and is ideal for rinsing, washing, and cleaning larger areas while reducing the likelihood of damaging sensitive surfaces.

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.