Superior Signal 10-L/20-L Manhole Liquid Smoke Blower

Superior Signal 10-L/20-L Manhole Liquid Smoke Blower

The Superior Signal 10-L/20-L Manhole Liquid Smoke Blower is a smoke generation system designed for sewer line testing, leak detection, and confined-space inspection

Model 20-L includes an auxiliary outlet with a removable cover and adjustable damper to direct air/smoke through the base or auxiliary outlet. The auxiliary outlet is designed for applications where smoke must be introduced into openings other than manholes.

Description: 

Superior Signal 10-L & 20-L Manhole Liquid Smoke Blowers

The Superior Signal 10-L and 20-L Manhole Liquid Smoke Blowers are smoke generation systems designed for sewer testing, leak detection, and confined-space inspection. Both models are engineered to produce consistent dry smoke output to help identify leaks, breaks, and unauthorized connections in underground piping systems.

Designed for Sewer Testing and Inspection

Liquid smoke blowers are commonly used by municipalities, contractors, and fire departments to locate infiltration points and system defects. These systems introduce smoke into sewer lines, allowing it to surface at cracks, breaks, or illegal connections.

Both the 10-L and 20-L models are designed for controlled smoke generation and reliable field operation.

Dry Smoke Output System

These units are engineered to produce dry smoke output, reducing moisture and residue often associated with traditional smoke systems.

• Large insulated and baffled heating chamber supports extended fluid-to-smoke conversion
• Stainless steel precision-machined injector nozzles regulate fluid delivery
• Micro-control flow valves provide consistent output
• Designed to minimize wet smoke and improve operational cleanliness

Airflow and Performance

Both models provide consistent airflow for standard sewer testing applications.

• Approx. 1,800 CFM at 1.7 static pressure
• Field-adjustable airflow and pressure settings
• Designed for controlled smoke distribution through underground systems

Model Differences: 10-L vs 20-L

The 10-L and 20-L models share the same core system design and airflow performance, with added flexibility in the 20-L model.

10-L Model:
• Standard configuration for manhole-based smoke testing

20-L Model:
• Includes auxiliary outlet with removable cover and adjustable damper
• Allows smoke introduction through alternate access points such as cleanouts or building connections

Durable Field Construction

Both models are built for repeated use in municipal and field environments.

• Single-unit metal construction
• Mounted on a 27.5" custom fiberglass base
• Integrated carrying handles for transport
• Approx. 65 lb carrying weight

Power System

• Powered by a Briggs & Stratton 3.5 HP gasoline engine
• Designed for portable operation in field conditions

Compliance and Standards

• Meets recommendations of WEF, EPA, and NASSCO
• Designed for sewer inspection and testing programs