Proportioner Sales — Graco, PMC & Gusmer

A huge share of proportioner sales aren't full-rig buyers — they're contractors who already own a working trailer, generator, and hose setup, and just need the proportioner itself replaced or added. This is one of the most cost-effective moves a contractor can make: instead of financing an entire new rig at $150,000+ CAD, you're buying a single machine and dropping it into equipment you already own and already know how to run.

The most common scenario is a proportioner nearing end of service life — heavy wear on pumps, ratio drift that no longer holds tight enough for closed-cell work, or a discontinued model where parts are getting hard to source. Swapping just the proportioner, keeping the trailer, generator, and hose bundle, gets a rig back to reliable output at a fraction of a full rebuild's cost and downtime.

The second common scenario is growth: a two-crew shop running one rig wants to add a second gun station so both crews can work simultaneously, either on the same rig with a dual-proportioner configuration or by adding a standalone second machine to a second trailer or truck platform. We sell and install standalone units for both scenarios, and we'll confirm compatibility with your existing generator capacity, hose runs, and gun setup before you buy so there are no surprises on install day.

Every proportioner uses one of two drive technologies to move material through the pumps, and the choice affects output consistency, maintenance profile, and how the machine behaves in cold Canadian job conditions.

Electric-drive proportioners (Graco's E-XP2 and E-30 Elite are the best-known examples) use electric motors and closed-loop electronic ratio control. They tend to deliver more consistent output across a range of ambient temperatures, run quieter, and have fewer moving mechanical parts subject to wear — but they depend on functioning electronics and sensors, and a control-board or sensor failure in the field means the machine is down until that specific part is sourced or replaced.

Hydraulic-drive proportioners use a hydraulic pump and motor system to drive the material pumps. They're mechanically simpler to diagnose and often more tolerant of rough field conditions and less-than-ideal maintenance schedules, which is part of why they remain popular in shops that do a lot of their own wrenching. The tradeoff is more routine hydraulic-fluid maintenance and generally a bit more mechanical noise and heat under sustained heavy output.

Neither drive type is right or wrong — a shop with a strong in-house mechanic who prefers hands-on diagnostics often leans hydraulic, while a shop that wants consistent output with minimal operator intervention and doesn't mind calling in electronics support when something goes wrong often leans electric. We'll talk through your crew's mechanical comfort level and job conditions before recommending a drive type.

Buying a proportioner is really buying into a support network, because the machine's uptime after year one depends entirely on how fast you can get parts and a qualified tech when something breaks. Graco's Reactor 2 line has the broadest distributor and parts footprint in Canada, which matters most to contractors operating in remote or rural regions where a shorter shipping distance for a control module or pump kit can mean the difference between a one-day fix and a lost week of billable jobs.

PMC and Gusmer both maintain solid parts and service coverage across Canada as well, though availability can vary more by region and by which distributors carry active stock locally versus special-ordering from the manufacturer. Before buying any brand, we'll walk through what's actually stocked near your operating territory — not just what the spec sheet claims — so you're not caught guessing during your first field failure.

As an authorized dealer across all three brands, we carry common wear parts in stock and can get less-common components moving fast through manufacturer channels. See rig parts & components for gun tips, mix chambers, pump repair kits, and other proportioner consumables, and rig service & repair for field diagnostics and scheduled maintenance on the machine you buy from us.

The proportioner that's right for a residential retrofit crew is often the wrong (and needlessly expensive) choice for a commercial large-format crew, and vice versa. Getting this match right up front saves money on the purchase and on ongoing operating costs.

Residential retrofit and smaller renovation work — attic retrofits, crawl spaces, smaller additions — typically runs well below the output ceiling of a top-tier commercial machine. A mid-output electric unit like an entry Reactor 2 configuration or comparable PMC model usually covers this work comfortably, with lower fuel/power draw and a smaller footprint on a smaller trailer or slide-in setup.

Commercial and large-format work — big-box roofing, agricultural buildings, new-construction shells, high-volume industrial jobs — needs sustained high output over long shifts, which is where the higher end of the Reactor 2 line, PMC's larger frames, or the Gusmer H-35 earn their keep. Buying under-powered for this segment shows up as slower job completion and more operator fatigue managing a machine at its output ceiling all day.

If your job mix genuinely spans both ends — some weeks residential, some weeks commercial — we'll talk through whether one mid-to-upper-output machine covers both acceptably, or whether a two-proportioner fleet (one lean machine, one heavy-duty machine) makes more sense long-term. This is exactly the kind of call worth making with a dealer who sells and services all three major brands, rather than one who only carries a single line.