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How A Spray Foam Rig Works

Spray Foam Rig

Learning how a spray foam rig works will aid you in understading the major components needed within a spray foam rig, box truck or portiable spray foam units.







Spray Foam Rigs contains the following:



Spray Foam Rig Generators

A generator is used to provide 220 volt power (single phase or 3 phase) pending the system requirments.

The generator provides a 220V power supply to the spray foam machine and electric compressor. A 110V power supply is used to accomodate lighting, heaters, power tools, and additional outlets.  

Spray Foam Rig Compressors

A comperssor is used to supply air to the transfer pumps, drum mixer and spray gun.


Some drive systems used to operate the spray foam machine may require air.


Example: Spray foam machines that use air type drive systems require larger air compressors to operate than hydraulic spray foam machines.

Spray Foam Rig Air Dryers

Air dryers are used to filter out moisture contaimants from the compressor to the spray foam equipment, such as transfer pumps, spray gun, air mixers, or if using a air driven type spray foam machine.

Safety Supply & Mechanics Station

The rigs include a safety supply station and spray mechanic's work area which can be  used to perform any maintenance. The mechanic's station provides space for tools, PPE, supplies, and manuals for all of the spray foam equipment, and keeps (MSDS) material safety data sheets organized.

Spray Foam Rig Drum Rack Station

A drum rack station is used to secure the 55 gallon drums safely during transport. The rack should be color-coded red on the driver's side for the (A) componet and blue on the passenger side of the spray rig to avoid accidental cross contamination of the porduct's feed to the spray foam machine.

Spray Foam Rig Drum Heaters

Drum heaters are used to keep products warm in cold enviroments. They are also used to pre-warm chemicals to the manufacturer's recommendations.


Example: With some open-cell spray foams, chemical manufacturers recommend that the drum temperatures be between 70 to 90 + degrees before the product is pumped to the spray foam machine. Typically, closed-cell spray foam drums are maintained between 70 to 80 degrees.

Spray Foam Rig Transfer Pumps

Transfer pumps consist of an air-motor which moves a shaft fixed to pump packings that work with check-valves by displaceing the materials to the spray foam machine. Transfer pump tube holders are used for transit, storage and changing out the drum in the spray trailer.

Spray Foam Machine

The spray foam machine is where the manufacturing of spray foam begins. The materials are pumped from the (A) and (B) 55 gallon drums by the transfer pumps to the Y filters (screens) on the machine to pre-filter any contaimants from the drums. From the Y- Filters, the materials are pressurized by two pumps at 1,000 to 1,500 PSI. One pump for the (A) component and one pump for the (B) component, attached to a single-drive system. (PMC hydraulic spray foam machine shown in photo). Once the chemicals are pressurized, they enter the pre-heaters. The pre-heaters are designed to pre-warm the products to the manufacturer's processing recommendations ranging from 120 degrees to 140 degrees. The materials exits the pre-heaters, passing through two pressure gauges, allowing a user to monitor the materials being processed at a 1:1 ratio. The gauges are also used to trouble-shoot the spray foam machine. From the guages, the materials enter into the heated spray hoses.    

Heated Spray Hoses

Heated spray hoses are designed to maintain the manufacturer's pre-heated recomendations from the machine to the spray gun. Heated spray hoses are typically sold in 50ft sections. The end of the hoses has a 10ft heated whip hose used for flexibilty for the spay applicator. Pending the spray foam machine choosen depends on how many feet of heated hose is available to run from the machine to the spray gun. Spray foam machines vary in heated hose lengths with capibilties ranging from 210ft to 410ft.

AP-2 Spray Foam Gun

The spray gun is the final destintion as to how a spray foam rig works and the spray foam manufacturing process.

The two (A) and (B) chemicals are blended inside of the spray gun through the internal mixing chamber. Mixing chambers are designed for optional output flows, allowing the user to choose the flow of material as well as the production needed for the spray foam project.


Learn more about how a spray foam machine works.

Spray Foam Rig Set Up



Learn which spray foam rig and spray foam equipment is right for your business.


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16ft Series Spray Foam Rig

The M 16 Master Series spray foam rigs offer spray foam contractors choices found in larger spray foam rigs and can carry up to 3 sets of product. Choose from the PH-20, PH-25 and the PH-40 series spray foam machines, optional generators and compressors.

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Polyurethane Machinery Corporation

The most user friendly, reliable spray foam equipment in the spray foam buisness. With decades of experiance, PMCs spray foam machines offer relay logic technology, point-to-point wiring and stroke down counter featuring the most competitive pricing.

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Mobile Spray Foam Rigs

Foam Rigs For Sale.com's turnkey mobile spray foam rigs are available in many varieties, sizes, and colors, with optional polyurea and spray foam machines, generators, compressors, box trucks, portable spray foam units including our custom built spray foam rigs.

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