121480180 ST-49 Sewer Nozzle – 1/4" NPT, Size #7.5 (1F-3B)

Model / Part Number: 121 480 180
Category: Pressure Washer Accessories → Sewer & Drain Jetter Nozzles
Type: Fixed Tube & Sewer Cleaning Nozzle – 1 Forward / 3 Back (1F-3B)

The 121 480 180 ST-49 Sewer Nozzle (1/4″ NPT, Size #7.5) is a high-flow fixed jetter nozzle engineered for powerful sewer and drain cleaning performance. Featuring a 1 forward jet and 3 rear-facing jets, this configuration delivers strong clog penetration while maintaining effective hose propulsion and pipe wall flushing.

Jet Configuration (1F-3B)

• 1 Forward Jet – Breaks through grease, sludge, scale, and compacted blockages

• 3 Reverse Jets – Pull the hose forward and flush debris from pipe walls

• Fixed Spray Pattern – Consistent and reliable cleaning action

This balanced configuration is ideal for penetrating tough obstructions while maintaining strong flushing performance.

Technical Specifications

• Model: ST-49

• Part Number: 121 480 180

• Inlet Connection: 1/4″ NPT

• Orifice Size: #7.5

• Jet Pattern: 1F-3B

• Maximum Pressure: 4200 PSI

• Application: Sewer & drain jetting

Key Features

• ST-49 1/4″ sewer jetter nozzle

• #7.5 orifice high-flow drain cleaning tip

• 1 forward / 3 back jet configuration

• Rated up to 4200 PSI

• Heavy-duty sewer and tube cleaning nozzle

• Ideal for higher GPM pressure washer systems

• Fixed jet design for reliable performance

Ideal Applications

• Large diameter sewer lines

• Commercial drain cleaning

• Heavy grease and sludge buildup removal

• Long pipe runs requiring strong propulsion

• High-flow jetting systems

Why Choose the #7.5 Orifice?

The #7.5 orifice is best suited for higher GPM machines, allowing greater water flow for aggressive cleaning and improved thrust in larger lines.

⚠ Important: Always match the nozzle size (#7.5) to your machine’s GPM rating to maintain proper PSI and avoid pump damage.