Choosing the right PMC spray foam rig starts with understanding more than output and hose length. Pressure rating is another important factor because PMC offers proportioners designed for different pressure ranges and applications.
PMC’s lineup includes lower-pressure PH Series proportioners and higher-pressure PHX Series equipment. Understanding what those pressure ratings mean can help contractors choose equipment that better matches the material they spray and the work they perform.
What Does Pressure Rating Mean on a PMC Spray Foam Rig?
The pressure rating of a PMC spray foam rig refers to the maximum working pressure the proportioner is designed to produce. However, maximum pressure does not mean the machine should always be operated at its highest setting.
Spray pressure should match the chemical manufacturer’s recommendations, application requirements, spray gun setup, temperature, and system configuration.
Pressure is only one part of equipment selection. Output, heating capacity, hose length, electrical requirements, and material type also need to be considered.
PMC Low-Pressure PH Series Equipment
PMC identifies its PH Series as its lower-pressure proportioner line. Many machines in this group are rated around 2,000 psi.
Examples include:
- PMC PH-2 — maximum pressure of 2,000 psi
- PMC PH-25 — maximum pressure of 2,000 psi
- PMC PH-40 — maximum pressure of 2,000 psi
- PMC PH-55 — higher-output equipment within the PH lineup
- PMC PK-25 — pneumatic proportioner rated up to 2,000 psi
Although PMC describes these as lower-pressure proportioners, they are still professional plural-component machines built for spray foam insulation, roofing, and other production applications.
PMC High-Pressure PHX Series Equipment
A higher-pressure PMC spray foam rig typically uses PMC’s PHX Series proportioners, which are designed for higher working pressures.
Depending on the model, PHX equipment can reach approximately 3,000 to 3,500 psi.
Examples include:
- PMC PHX-2 — maximum pressure of 3,000 psi
- PMC PHX-25 — maximum pressure of 3,000 psi
- PMC PHX-40 — maximum pressure of 3,500 psi
- PMC PHX-55 — maximum pressure of 3,500 psi
- PMC PKX-25 — maximum pressure of 3,000 psi
These higher-pressure systems can be a better fit for certain plural-component coatings and other applications that require greater operating pressure.
Low Pressure vs. High Pressure Does Not Mean Low Output vs. High Output
A common mistake is assuming pressure rating and material output are the same thing.
They are not.
A proportioner can have a lower maximum pressure while still delivering significant production output. For example, the PMC PH-40 operates at a lower maximum pressure than PHX models but is still designed for substantial material output.
Contractors comparing a PMC spray foam rig should evaluate pressure and output separately.
Why Would a Contractor Need Higher Pressure?
Higher-pressure equipment may be appropriate when the application requires:
- Higher operating pressure specified by the material manufacturer
- Plural-component coating applications
- Specific spray gun or mixing requirements
- Greater flexibility across foam and coating work
- Higher-pressure capability for demanding commercial applications
Higher PSI does not automatically make one machine better than another. The correct machine is the one that matches the material and application.
Consider the Entire PMC Spray Foam Rig
The proportioner is the heart of a PMC spray foam rig, but it is only one part of the complete system.
Contractors should also consider:
- Maximum material output
- Primary heater capacity
- Heated hose length
- Electrical requirements
- Generator capacity
- Air compressor requirements
- Transfer pumps
- Spray gun compatibility
These components must work together to support the intended application and production goals.
Which PMC Equipment Is Right for Your Application?
For contractors primarily spraying insulation foam, a PH Series proportioner may provide the pressure and performance needed for everyday applications.
Contractors working with coatings or materials that require higher working pressures may be better suited to PHX equipment.
Spray Foam Systems can help contractors compare PMC proportioners and choose the right PMC spray foam rig for their insulation, roofing, or coating operation.
Contact Spray Foam Systems to find the right PMC equipment for your business.
FAQs
What is the difference between PMC PH and PHX proportioners?
PMC PH proportioners are generally designed around lower maximum working pressures, while PHX models provide higher-pressure capability for applications that require it.
Does a higher PSI rating mean a spray foam machine produces more material?
No. Pressure and output are separate specifications. A machine can operate at a lower maximum pressure while still delivering high material output.
Can Spray Foam Systems help build a complete PMC spray foam rig?
Yes. Spray Foam Systems can help contractors select PMC proportioners and configure the supporting equipment needed for a complete spray foam or coatings rig.
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.