The ProPAK 300D Spray Foam Rig is a complete turnkey solution for contractors who demand power, reliability, and consistent results. Built around a diesel-powered generator, this spray foam insulation rig is engineered for large-scale projects where long run times, efficiency, and durability are essential. Whether you are taking on residential subdivisions, large warehouses, or commercial roofing, the ProPAK 300D is designed to keep your crew spraying longer with fewer interruptions.
What the “D” Stands For
The “D” in ProPAK 300D is more than just a letter—it tells you exactly what makes this rig unique. The “D” stands for Diesel, and that means the entire rig is powered by a heavy-duty diesel generator. Contractors know that diesel brings an edge in performance. It provides longer run times, greater fuel efficiency, and increased durability compared to gas-powered systems. For high-production spray foam jobs, diesel is the power source of choice.
With a diesel foundation, the ProPAK 300D Spray Foam Rig is not just another piece of equipment—it’s a professional-grade solution built to match the scale of the most demanding spray foam insulation projects.
Why Diesel Power Matters on the Job
Choosing a diesel-powered spray foam rig gives contractors several advantages that directly improve productivity and profitability.
- Extended Run Times – Diesel generators are built to operate for long stretches without overheating or requiring constant maintenance. This means you can spray for longer periods, finish bigger jobs faster, and reduce downtime.
- Fuel Efficiency – Diesel fuel delivers more energy per gallon than gas, making each tank last longer. Lower fuel costs over time translate into savings for contractors running multiple rigs or completing back-to-back projects.
- Durability and Strength – Diesel engines are built to handle heavy loads and tough conditions. They are less prone to wear when running at high output, which extends the lifespan of your equipment investment.
- Reliability in the Field – Spray foam insulation jobs are often in remote or commercial areas where electrical hookups are unavailable. A diesel-powered generator ensures your spray foam rig has consistent, dependable energy no matter where the project takes you.
These benefits make the ProPAK 300D not only powerful but also cost-effective over the long term. Contractors who choose diesel quickly see the difference in efficiency and overall project turnaround.
Built Around the Graco Reactor 3
At the heart of the ProPAK 300D Spray Foam Rig is the Graco Reactor 3, one of the most trusted proportioners in the spray foam industry. This advanced proportioner is designed to deliver consistent, on-ratio spray foam, which is critical for meeting building codes, customer expectations, and manufacturer warranties.
Contractors can choose between the Graco Reactor 3 E-30 or the Graco Reactor 3 E-XP2, depending on whether the focus is spray foam insulation or polyurea coating applications. Both options provide precise temperature control, improved connectivity, and reduced maintenance requirements compared to earlier generation proportioners.
When paired with the diesel generator, the Graco Reactor 3 runs at optimal performance throughout the workday. The result is consistent spray patterns, smooth material flow, and fewer jobsite delays.
Complete Rig Package Features
The ProPAK 300D is more than just a proportioner and a generator. It is a complete spray foam insulation rig built for professional contractors. Inside the rig, everything is laid out for efficiency, accessibility, and productivity.
- Diesel Generator – Heavy-duty power designed for long runtime.
- Air Compressor – Supplies consistent air for spray guns and other pneumatic tools.
- Tsunami Pure 5 Air Dryer – Protects your spray foam system by eliminating moisture from compressed air.
- Transfer Pumps – Ensure steady material flow from drums to the proportioner.
- Heated Hoses – Maintain material temperature across the entire hose length for consistent spray application.
- Professional Trailer Build – Organized design that maximizes working space, provides storage, and protects equipment during transport.
Each feature is carefully chosen to ensure the entire rig works as one integrated system. The result is a spray foam insulation rig that delivers both power and efficiency from start to finish.
Designed for High-Volume Spray Foam Insulation
The ProPAK 300D Spray Foam Rig is designed with high-production contractors in mind. Residential foam installers working across multiple homes in a subdivision benefit from its extended runtime. Commercial roofing contractors appreciate the ability to cover large surfaces without equipment slowdowns. Industrial applicators rely on diesel power for consistent performance in tough conditions.
Because of its diesel generator, this spray foam rig is especially well-suited for large-scale projects where downtime is not an option. Contractors gain the confidence to take on bigger jobs, knowing their equipment is built for long hours and steady output.
The ProPAK 300D Advantage
Contractors choose the ProPAK 300D because it balances rugged performance with smart design. The diesel generator reduces operating costs while extending lifespan. The Graco Reactor 3 provides consistent, high-quality spray foam. And Spray Foam Systems’ custom rig build ensures everything is professionally installed, tested, and ready for immediate use.
When you invest in the ProPAK 300D Spray Foam Rig, you are not just buying equipment—you are investing in a solution designed to grow your business. The combination of power, efficiency, and reliability makes this rig a valuable addition to any spray foam contractor’s fleet.
About Spray Foam Systems
Spray Foam Systems is the #1 spray foam rig builder and spray foam equipment supplier in the United States. Family-owned and proudly serving the industry since 2007, we operate from a 7-acre campus with over 80,000 square feet of dedicated working space in Greensboro, GA. With over 10,000 customers served over the last 18 years, we specialize in delivering high-quality turnkey spray foam systems, distributing top-tier equipment and supplies, and providing nationwide service and training to help contractors grow and succeed in the spray foam insulation and roofing markets.