The Air Systems International 8-Inch Axial Blower Kit Family provides the ultimate, ready-to-deploy confined space ventilation system for utility workers, safety teams, and contractors. Headlined by the industry-standard CVF8A15KIT (115V AC) and backed by the remote-ready DC battery-powered family, these comprehensive packages combine a high-velocity 8" axial fan, a protective storage canister with flexible ducting, and the patented Saddle Vent® manhole ventilation device.
This all-in-one system guarantees complete OSHA compliance by continuously supplying fresh air to workers below while leaving the manhole opening fully unobstructed for safe entry and exit.
Understanding the Kit Family: AC vs. DC Options
Select the power source that best aligns with your job site requirements:
• CVF8A15KIT (Standard AC Power): Driven by a high-efficiency 1/3 HP electric motor running on standard 115 VAC power. It includes a built-in GFCI plug for critical operator safety in damp, outdoor utility environments.
• CVF8D15KIT & CVF8D25KIT (12V DC Battery Power): Purpose-built for remote job sites lacking immediate generator or shore power access. Driven by a 1/4 HP, 12 VDC motor, these kits hook up directly to vehicle or external batteries via heavy-duty alligator battery clips. The D15KIT provides a 15-foot duct setup, while the D25KIT extends your reach with 25 feet of ducting.
Key Features & Benefits
• Patented Saddle Vent® Technology: The centerpiece of the system. The low-profile Saddle Vent® drops directly into the manhole rim, utilizing only 3 inches of space. Workers can freely ascend or descend without crushing or removing the ventilation line.
• High-Volume Air Purging: The AC kit drives a powerful 974 CFM of free air (maintaining 786 CFM even with the ducting attached and a 90° bend) to rapidly clear out stagnant heat, fumes, and stale air.
• All-In-One Portability & Protection: No more loose hoses. The rugged poly canister snaps directly onto the blower housing to keep your ducting, 90-degree elbow, and universal manhole mounting bracket neatly grouped, organized, and protected against job site damage.
• Impact and Weather-Resistant Polyethylene: The fan housing, canister, and Saddle Vent® are constructed from safety-orange high-density polyethylene (HDPE). This rugged design won’t dent, rust, or corrode, and is CSA certified for reliable continuous outdoor use.
• Fast, Tool-Free Setup: Engineered for field efficiency, the entire system connects and locks into place in seconds, allowing crews to secure their ventilation layout immediately upon arriving at the site.
System Component Checklist
Every complete kit arrives ready to work and includes:
1. 8-Inch Axial Blower (115 VAC or 12 VDC)
2. Snap-Lock Poly Canister with Flexible Ducting (15 ft or 25 ft)
3. Patented Orange Saddle Vent®
4. 90-Degree Ventilation Elbow
5. Universal Manhole Mounting Bracket
Ideal Applications
• Municipal utility manholes, underground vaults, and wastewater systems
• Telecommunications vaults and electrical trenching operations
• Remote agricultural silo maintenance and pipeline inspection (DC versions)
• Emergency municipal utility repairs requiring quick vehicle-battery hookups
