McElroy Pit Bull 28 Butt Fusion Machine

The McElroy Pit Bull® 28 is purpose-built for contractors and utility crews performing pipe fusion in excavations, trenches, and other restricted work areas. Its modular design separates the carriage, heater, facer, and hydraulic power unit, allowing operators to position components for maximum flexibility on challenging jobsites.

Engineered with McElroy’s patented Centerline Guidance System, the machine helps maintain pipe alignment throughout the fusion process, promoting high-quality joints and reducing installation errors. The carriage can be converted from a four-jaw configuration to a more compact three-jaw setup, making it ideal for tight installations and fitting fabrication applications.

Available in high-force and low-force models, the Pit Bull® 28 provides dependable performance for underground utility construction, water infrastructure, industrial piping, and gas distribution projects.

Key Features

• Pipe Fusion Range
  ‍Fuses pipe sizes from 2" IPS to 8" DIPS (63mm–225mm)
• Compact Trench Design
  ‍Specifically engineered for in-ditch fusion operations
• Convertible Carriage
  ‍Easily converts from 4-jaw to 3-jaw configuration for tighter workspaces
• Centerline Guidance Technology
  ‍Maintains proper pipe alignment for consistent weld quality
• Rigid Aluminum Construction
  ‍Helps re-round pipe and maintain alignment during fusion
• Hydraulic Fusion System
  ‍Provides controlled pressure throughout the fusion cycle
• Modular Components
  ‍Carriage, heater, facer, stand, and HPU can be arranged independently
• Combination Unit Available
  ‍Supports branch saddle fusion with maximum base diameters up to 9.63"
• Multiple Voltage Options
  ‍Available in 120V and 240V configurations
• Compatible with Data Logging Systems
  ‍Supports fusion process documentation and quality control programs

Benefits

• Improved Joint Quality
  Patented alignment technology helps ensure the pipe centerline remains properly positioned, contributing to stronger, more consistent fusion joints.
• Optimized for Confined Spaces
  The compact footprint and modular components make the machine easier to use in trenches, pits, and congested excavations.
• Greater Installation Flexibility
  A convertible carriage design allows crews to adapt the machine for fittings, tees, elbows, adapters, and limited-access installations.
• Enhanced Productivity
  Hydraulic controls maintain steady fusion pressure, helping operators produce repeatable results while reducing the likelihood of rework.
• Rugged Field Performance
  Durable aluminum construction and hardened components withstand demanding underground construction environments.
• Easier Handling and Transport
  Separated machine components simplify transport and positioning compared to larger self-contained fusion equipment.

Frequently Asked Questions

What pipe sizes can the Pit Bull® 28 fuse?

The machine is designed to fuse polyethylene pipe ranging from 2" IPS to 8" DIPS (63mm–225mm).

Can the machine be used in trenches?

Yes. The Pit Bull® 28 was specifically designed for in-ditch and trench fusion operations, making it ideal for underground utility work.

What is the advantage of the 3-jaw conversion?

The optional 3-jaw configuration reduces the machine's footprint, improving access when working in confined spaces or fusing fittings.

Does the machine use hydraulic fusion pressure?

Yes. The Pit Bull® 28 utilizes a hydraulic system that maintains consistent pressure throughout the fusion cycle for reliable weld quality.

Is a hydraulic power unit included?

No. The hydraulic power unit (HPU) is supplied separately and is required for machine operation.

Is there a version for branch saddle fusion?

Yes. A Pit Bull® 28 Combination Unit (CU) is available and supports branch saddle fusion applications.