CPVC Duct Caps

CPVC duct caps are used to seal off the open ends of CPVC ductwork temporarily or permanently. The caps are made from chlorinated polyvinyl chloride (Corzan® CPVC) for heavy duty durability, chemical resistance, and high temperature tolerance. They are designed to fit tightly over open socket joints of CPVC pipe or fittings to provide a secure, protective seal. Duct caps are used to prevent the entry of dust, debris, or other contaminants into the duct ventilation system during construction, maintenance, or operation. They can either slip over the duct end or be welded for permanent installation to create an airtight connection resistant to leaks and external conditions. CPVC duct caps are used to maintain the cleanliness and integrity of CPVC duct systems, especially in industrial HVAC applications, by protecting against contamination or blockages that could affect airflow or quality. The caps are suitable for ventilation systems that handle air or exhaust that may contain fumes, gasses, dust, particulates, or vapors.

These are USA made CPVC duct caps built by Harrison Machine and Plastic® under the trade name SUPERDUCT®, one of the nation’s top manufacturers and brands of thermoplastic ductwork. SUPERDUCT® caps are to be used with air and compatible gaseous media in open air, non-pressurized applications only. They are not for use in pressure systems, with liquids, or with known incompatible chemicals. Always verify chemical compatibility prior to use.

CPVC duct cap fittings come in a full selection of sizes ranging from 2″ to 24″ in diameter. They are made to Iron Pipe Size (IPS) diameter and come with a single belled end socket. For installation of CPVC duct caps up to 14" in size, a quality CPVC primer and solvent cement are recommended. For CPVC duct caps larger than 14″ in size, hot air welding is recommended.

CPVC duct cap fittings are manufactured from professional grade Corzan® CPVC material that meets ASTM D1784 standard requirements. They have been tested and certified to ASTM ductwork standards for purity, physical and chemical durability, temperature tolerance, and flame spread properties. CPVC duct caps are engineered to be safe, dependable, and of consistent quality to provide long term performance in securing open ends of CPVC ducting systems.

• Material Profile: Type IV Grade I CPVC Cell Class 23447. 
• Color: Light gray. 
• Performance Standards: Meets and/or exceeds CPVC ASTM D testing standards for ductwork applications. 
• Pressure: For non-pressurized systems only. 
• Temperature: Approved for up to 200°F (93°C). 
• Sizing Standard: Schedule 40 / IPS thickness standard. 
• Size Options: Range from 2″ to 24″ in diameter. 
• Connection Options: Belled socket ends. 

Heavy duty CPVC duct caps offer numerous advantages and stand out for their combination of strength and functionality. These duct fittings are resistant to corrosion from weathering and many commonly used industrial and commercial chemicals to provide lasting reliability for extended service. They are lightweight by design for easy handling and installation. CPVC duct caps have a working temperature range up to 200°F suitable for a wide range of applications and work conditions. 

• CPVC Material: High performance thermoplastic with superior strength, chemical resistance, and temperature tolerance. 
• Chemical Resistance: Generally resistant to most acids, bases, salts, aliphatic solutions, oxidants, and halogens.
• Secure Ends: Permanently or temporarily secure open ends of ductwork pipes and fittings. 
• Project Matching: Complete range of sizes to meet project needs.
• Heavy Duty: Built for lasting strength and durability in hardworking ductwork systems.
• Airtight: Provides secure, leakproof seal when properly installed.
• Easy Installation: Low weight and damage resistant for easy handling when installing. 

Common applications and uses for CPVC industrial duct cap fittings include sealing off ductlines in new constructions or additions, during repairs or maintenance, and periods of inactivity. CPVC duct caps are often used in industrial facilities, chemical plants, laboratories, water treatment facilities, plating systems, electronics manufacturing, food and beverage production, and other work settings that require ductwork resistant to high temperatures, chemicals, or harsh, abrasive materials within the air or gaseous media handled by the ventilation system.

Harrison CPVC SUPERDUCT® caps are an industry professional’s trusted choice for top quality and high performance. The fittings are designed and manufactured to provide the durable, dependable service that hardworking duct systems demand. Engineered to exceed requirements and made using premium materials, our CPVC duct supplies are built to deliver results. Contact us for more information on our products or for details on contractor pricing and availability.