CPVC Duct Blastgates

CPVC duct blastgates are valve type fittings used to regulate airflow or shut off flow in parts of a ductwork system. They are made for ventilation applications that require flow control for air, fumes, or particulates handled by the ductwork. CPVC duct blastgates feature an internal gate that can slide up or down within CPVC duct pipelines to modify flow rate. The blastgate has three set positions: open (full flow), half-closed (restricted flow), and closed (blocked flow). When the gate is open, air will flow freely through the duct system. Half-closed restricts and limits airflow. When the gate is closed, the duct line is blocked, stopping airflow and allowing air to be redirected as needed. Blastgate fittings are used to improve control, safety, and efficiency in air handling applications. They are often used in ventilation systems that handle hazardous or corrosive air or gaseous media such as exhaust, fumes, VOCs, vapors, dust, and particulates. By providing airflow control, CPVC duct blastgates work to maintain proper ventilation conditions, regulate load on filtration or treatment systems, and prevent the spread of potentially dangerous materials. CPVC duct blastgates are commonly used to control airflow in industrial HVAC applications, laboratory settings, production environments, and manufacturing facilities to manage air quality, regulate distribution, and provide containment.

The fittings are made from Corzan® chlorinated polyvinyl chloride (CPVC). Corzan® CPVC is a heavy duty, long lasting thermoplastic that provides superior resistance to environmental conditions, chemical degradation, and damage from elevated temperatures and fluctuations. Blastgates feature a 3-position locking pin for setting the gate height during operation. All internal parts are CPVC plastic. The blastgates provide 0%, 50%, or 100% restriction in airflow. 

These are USA made CPVC duct blastgates built by Harrison Machine and Plastic® under the trade name SUPERDUCT®, one of the nation’s top manufacturers and brands of thermoplastic ductwork. SUPERDUCT® blastgates 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 blastgate sizes range from 2″ to 24″ in diameter and Iron Pipe Size (IPS) sizing standard. CPVC blastgates feature belled end socket connections for easy installation with plain end duct pipe. When installing duct fittings up to 14" in size, a professional CPVC primer and solvent cement are recommended. For duct fittings over 14″ in size, hot air welding is recommended. CPVC duct blastgates can be installed either horizontally or vertically in CPVC ductwork.

CPVC duct blastgates are manufactured from professional grade FM4910 specification Corzan® virgin CPVC material per ASTM D1784 standards. CPVC duct blastgates meet and/or exceed ASTM testing standards and requirements to ensure product purity, consistency, mechanical strength, chemical resistance, maximum working temperatures, and fire resistance.

• Material Profile: Type IV Grade I CPVC Cell Class 23447. 
• Color: Light gray. 
• Performance Standards: Meets and/or exceeds CPVC duct ASTM testing standards. 
• 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 end socket. 

Harrison SUPERDUCT® CPVC blastgates are engineered to deliver long lasting, dependable performance. Their heavy duty construction makes them an ideal choice for ventilation systems and work environments where ductwork may be exposed to harsh chemicals or extreme conditions. Primary features include improved chemical resistance, high temperature range up to 200°F, and overall durability. Benefits include their ability to maintain clean air standards, improve system efficiency, regulate flow conditions, and the versatility to handle various industrial and commercial applications.

• 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.
• Control Airflow: Start, stop, and restrict ventilation conditions with three set working positions.
• 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 these CPVC duct fittings include industrial and commercial HVAC systems, fume extraction setups, air quality management, fume scrubbers, and filtration systems used to collect, transfer, treat, discharge, or reclaim onsite air, gasses, or fumes. Common industries and sectors CPVC duct blastgates are used in include manufacturing, industrial production and finishing, chemical processing, laboratories, research, educational institutions, electronics production, plating, pulp and paper manufacturing, and wastewater treatment.

Heavy duty CPVC blastgates 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.