121470170 ST-49 Sewer Nozzle – 1/4" NPT, Size #6.0 (1F-4B)

Model / Part Number: 121470170
Category: Pressure Washer Accessories → Sewer & Drain Jetter Nozzles
Type: Fixed Tube & Sewer Cleaning Nozzle – 1 Forward / 4 Back (1F-4B)

The 121470170 ST-49 Sewer Nozzle (1/4″ NPT, Size #6.0) is a high-performance fixed jetter nozzle built for aggressive sewer and tube cleaning applications. Designed with a 1 forward jet and 4 rear-facing jets, this configuration delivers enhanced propulsion, improved wall cleaning coverage, and strong blockage penetration.

Jet Configuration (1F-4B)

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

• 4 Reverse Jets – Increase thrust and provide wider flushing coverage

• Fixed Spray Pattern – Consistent and reliable cleaning action

Compared to 1F-3B models, the additional rear jet improves propulsion and wall-cleaning efficiency in longer or heavily soiled lines.

Technical Specifications

• Model: ST-49

• Part Number: 121470170

• Inlet Connection: 1/4″ NPT

• Orifice Size: #6.0

• Jet Pattern: 1 Forward / 4 Back

• Maximum Pressure: 4200 PSI

• Application: Tube & sewer cleaning

Key Features

• ST-49 1/4″ sewer jetter nozzle

• #6.0 orifice drain cleaning tip

• 1F-4B jet configuration

• Rated to 4200 PSI

• High-flow sewer cleaning nozzle

• Forward blasting and rear flushing design

• Ideal for commercial drain and sewer jetting

Ideal Applications

• Main sewer line cleaning

• Commercial drain maintenance

• Heavy grease and sludge removal

• Long pipe runs requiring strong propulsion

• Preventative high-pressure pipe flushing

Why Choose the #6.0 Orifice?

A #6.0 orifice is suited for higher GPM machines, providing increased flow and stronger thrust. It is ideal when more aggressive cleaning and propulsion are required.

⚠ Important: Always match nozzle orifice size (#6.0) to your machine’s GPM rating to maintain correct operating PSI and protect your pump.