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The Most Advanced Way To Socket Fuse

The Spider™ 125 machines are the preferred equipment for quick and accurate socket fusion of polypropylene piping systems used in today's most advanced HVAC, mechanical and plumbing systems. Applications are typically inside new or renovated commercial buildings where pipe is installed in tight spaces — walls, ceilings, floors, attics, crawl spaces, roof tops and mechanical rooms. This presents some unique challenges, but the innovative Spider machines were designed specifically to accomplish any feat.

Compact and Lightweight

Compact and Lightweight

Carrying a small footprint and weighing either 13 or 15 pounds depending upon the model, the Spider 125 is designed specifically to help operators tackle the unique challenges of indoor installations in walls, ceilings, floors, crawl spaces, rooftops and mechanical rooms. If you're in a tight situation, the Spider 125 is the perfect tool.

Only One Operator Required

A one-man crew is all that's needed to perform socket fusions on the Spider 125. This not only saves time and money but frees up manpower for continuing functions on the installation, making the jobsite even more productive and seamless.

Hand-Powered Operations
Non Back-Drivable

Non Back-Drivable

The Spiders are designed with non-back-drivable gearing that self-locks. This ensures that pressure is applied smoothly and constantly maintained throughout the socket fusion process to produce a quality joint.

Made for Any Type of Pipe*

The Spider 125 is the preferred equipment on jobs because it can successfully fuse a variety of polypropylene pipe and fittings, including PP-R (Polypropylene Random Copolymer) and the newest generation PP-RCT (Polypropylene Random Copolymer Crystalline Temperature). These materials deliver the same leak-free, corrosion-free pipe systems as other thermoplastic pipe systems that have been used successfully for decades.

* The McElroy Spider 125 with Chain Clamping accommodates Aquatherm and Aquatechnik pipe only.

Made for any type of pipe
5-Year Warranty

Industry-Leading Warranty

Guaranteed Performance

McElroy equipment is built to withstand the tough environments our industry encounters. We're confident that your machine will perform to the best of its capabilities. We've even given each piece of equipment a 5-year warranty — the longest available in the industry.

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Additional Features

  Spider 125 with Universal Clamping Spider 125 (chain clamping)
No inserts necessary
Universal Clamping jaw system fits all pipe brands and fittings
Non back-drivable gearing, self-locking
Two-position support handle
Lightweight and compact
Wide jaws provide stability on pipe
Quick-release chain clamp jaw system
Removable crank handle
Quick-change inserts support popular pipe and fitting sizes
Mechanical stab depth gauge



Select a machine below for more detailed specifications and model-specific features.

Find a distributor near you.

McElroy's industry-leading fusion equipment can be purchased from distributors around the globe. Find one close to you.

Underground / Construction Mechanical / HVAC / Plumbing