123065185 ST-49 Sewer Nozzle – 3/8" NPT, Size #14.0 (1F-4B)
Model / Part Number: 123 065 185
Category: Pressure Washer Accessories → Sewer & Drain Jetter Nozzles
Type: Heavy-Duty Fixed Sewer Nozzle – 1 Forward / 4 Back (1F-4B)
The ST-49 Sewer Nozzle (3/8″ NPT, Size #14.0) is an ultra high-flow sewer jetting nozzle engineered for large-diameter pipe cleaning and demanding commercial applications. Featuring 1 forward jet and 4 rear-facing jets (30° angle), this configuration delivers aggressive blockage penetration, maximum thrust, and powerful debris flushing.
Jet Configuration (1F-4B)
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1 Front Jet – Breaks through fully clogged or frozen pipelines
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4 Rear Jets (30°) – Provide maximum propulsion and wide flushing coverage
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Self-Propelling Design – Rear jet thrust pulls the hose through the line
Compared to smaller orifice models, the #14.0 provides even greater water volume for high-output jetting rigs.
Technical Specifications
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Model: ST-49
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Part Number: 123065185
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Inlet: 3/8″ Female (NPT)
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Orifice Size: #14.0
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Jet Pattern: 1 Forward / 4 Back
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Maximum Pressure: 4,200 PSI
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Material: Stainless Steel
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Outside Diameter (O.D.): 0.92″
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Weight: 1.30 oz
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Recommended Pipe Size: 4″–8″ diameter lines
Key Features
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ST-49 3/8″ sewer jetter nozzle
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#14.0 ultra high-flow drain cleaning tip
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1F-4B jet configuration
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Stainless steel construction
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German-engineered components
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Rated up to 4,200 PSI
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Designed for 4″–8″ sewer pipes
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Maximum thrust sewer cleaning nozzle
Ideal Applications
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Municipal sewer maintenance
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Industrial drain cleaning
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Frozen pipe clearing
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Heavy grease and sludge removal
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Large-diameter commercial sewer systems
Why Choose the #14.0 Orifice?
The #14.0 orifice is intended for very high GPM machines that require maximum water flow and propulsion. It provides stronger thrust than smaller orifice sizes, making it ideal for larger pipes and long line runs.
⚠ Important: Always match the #14.0 orifice size to your machine’s GPM rating to maintain correct PSI and prevent pump overload.
