Armacell apt40034r Ap Armaflex Pipe Cover 4in Ips

Product Description

The ARMACELL apt40034r is a closed-cell elastomeric foam pipe cover from the AP ArmaFlex line, designed to insulate mechanical piping systems against thermal loss, condensation, and moisture accumulation. It fits 4-inch IPS pipe with a 4.5-inch inside diameter and a 0.75-inch wall thickness, delivering an R-value of 4.8. The closed-cell foam structure resists water vapor transmission at 0.08 perm-in and limits water absorption to 0.2 percent, keeping thermal performance intact over the life of the system. Each section runs 6 feet in length. Licensed HVAC technicians, pipefitters, and mechanical insulation contractors install this product on new construction and retrofit projects.

The apt40034r is suited for a wide range of mechanical piping applications including chilled water lines, refrigeration piping, hot and cold domestic water lines, and HVAC systems. Its moisture resistance makes it particularly effective on chilled water and refrigeration circuits where condensation would otherwise saturate fibrous insulation, degrade thermal performance, and promote fungal growth. It is also appropriate for exposed ceiling runs, air plenums, industrial mechanical rooms, and exterior installations. Schools, hospitals, universities, government buildings, and commercial facilities commonly specify this product for long-term system integrity.

Key Features

• Closed-cell elastomeric foam construction blocks moisture infiltration and resists condensation buildup
• R-value of 4.8 with thermal conductivity of 0.235 to 0.268 Btu-in/hr-sq-ft-degrees F
• Water vapor permeability of 0.08 perm-in and water absorption of 0.2 percent
• Flame Spread Index of 25 and Smoke Developed Index of 50 for fire-rated assembly applications
• Temperature rating from -297 to 220 degrees F covers refrigeration and hot water service
• 6-foot section length with 4.5-inch ID fits standard 4-inch IPS pipe

Compatibility

Designed for use on 4-inch IPS (iron pipe size) mechanical piping in refrigeration, chilled water, hot water, and HVAC applications in residential, commercial, and industrial settings.

Installation Notes

Installation is performed by licensed mechanical insulation contractors, pipefitters, or HVAC technicians following local mechanical codes and manufacturer guidelines. Shut down and depressurize the piping system before applying insulation on live or pressurized lines where required by site safety procedures. Seams and butt joints should be sealed with a compatible elastomeric adhesive to maintain vapor barrier continuity. On exterior applications, a protective jacketing or coating may be required to protect against UV degradation.

Technical Specifications

• Material: Elastomeric Foam
• Construction: Closed Cell
• Inside Diameter: 4.5 inches
• Iron Pipe Size: 4 inches IPS
• Wall Thickness: 0.75 inches
• Length: 6 feet
• R-Value: R4.8
• Thermal Conductivity: 0.235 to 0.268 Btu-in/hr-sq-ft-degrees F
• Temperature Rating: -297 to 220 degrees F
• Water Vapor Permeability: 0.08 perm-in
• Water Absorption: 0.2 percent
• Flame Spread Index: 25
• Smoke Developed Index: 50
• Density: 3 to 6 cu-ft/lb
• Color: Black
• Country of Origin: Domestic

Standard Information

• Brand: ARMACELL
• Manufacturer Part Number: apt40034r