Polyurethane Foam Insulated Pressure Vessels

Polyurethane foam insulated pressure vessels utilize rigid closed-cell polyurethane foam to provide superior thermal resistance for moderate-temperature applications. Polyurethane foam offers the highest R-value per inch of any commonly used insulation material, making it ideal for applications where space is limited or maximum thermal efficiency is required.

Why Choose Polyurethane Foam for Pressure Vessel Insulation?

Polyurethane foam insulation is specified when maximum thermal efficiency is required within minimal thickness. Its closed-cell structure provides excellent moisture resistance and eliminates the need for separate vapor barriers. Spray-applied polyurethane conforms to complex geometries without gaps or thermal bridges, providing seamless insulation coverage.

Polyurethane Foam Insulated Pressure Vessel Applications

Common applications include:

• Refrigerated storage vessels
• Chilled water tanks
• LNG and cryogenic support equipment
• Cold storage facilities
• Temperature-controlled transport tanks
• HVAC equipment

Polyurethane Foam Insulation Specifications and Characteristics

At Roben, Mfg, Inc., we offer comprehensive insulation options including:

• Temperature range: -40°F to 250°F (-40°C to 120°C)
• R-value: R-6 to R-7 per inch
• Density range: 2-4 lb/ft³
• Closed-cell structure (>90% closed cells)
• Available spray-applied or pre-formed

Certifications and Standards

Our thermal insulated pressure vessels are designed and manufactured in accordance with stringent industry standards:

• ASME Section VIII Division 1 & 2: Pressure vessel design and fabrication standards
• ASME Section IX: Welding procedures and qualifications
• ASTM Standards: Insulation material specifications and testing
• NBIC: National Board Inspection Code compliance
• CRN: Canadian Registration Number for Canadian installations
• U Stamp & R Stamp: ASME certification for new construction and repairs

Polyurethane Foam Insulated Pressure Vessel Frequently Asked Questions (FAQs)

What makes polyurethane foam superior for cold service?

Polyurethane foam’s closed-cell structure provides inherent moisture resistance and vapor barrier properties, critical for cold service where condensation is a concern. Its high R-value per inch (R-6 to R-7) allows thinner insulation profiles while achieving excellent thermal performance. Spray application eliminates joints and gaps that can cause condensation problems.

What is the temperature limit for polyurethane foam insulation?

Standard polyurethane foam is limited to approximately 250°F (120°C) continuous service temperature. Above this temperature, the foam can degrade and lose insulating properties. For higher temperatures, mineral wool, fiberglass, or calcium silicate insulation should be specified. Polyurethane excels in cold-to-moderate temperature applications.

How is polyurethane foam applied to pressure vessels?

Polyurethane foam can be spray-applied directly to vessel surfaces, providing seamless coverage that conforms to complex geometries. Alternatively, pre-formed polyurethane sections can be applied and sealed. Spray application typically requires protective jacketing after curing. The foam bonds directly to properly prepared metal surfaces.

Contact Roben, Mfg, Inc.

For more information about our thermal insulated pressure vessel solutions or to request a quote, please contact Roben, Mfg, Inc. today. Our experienced engineering team is ready to assist you in selecting the optimal insulation system for your specific temperature control requirements.

Phone: (732) 364-6000 | Email: sales@robenmfg.com

760 Vassar Ave, Lakewood, NJ 08701