PLASTIC SUPPLY
Guides & Resources
Frequently asked questions
Common questions about PLASTIC SUPPLY from 3G Electric.
What sizes of PLASTIC SUPPLY duct couplers are available?
PLASTIC SUPPLY duct couplers are available for nominal duct diameters of 4, 6, 8, 10, 12, 14, and 16 inches. The 4-inch coupler (PVCC04) has a 4 1/2-inch inlet and outlet diameter and a 4 1/4-inch overall length. The 6-inch through 16-inch couplers (PVCC06, PVCC08, PVCC10, PVCC12, PVCC14, PVCC16) have inlet and outlet diameters that match the nominal size and a 5 7/8-inch overall length. These sizes cover many common ventilation and exhaust duct systems.
What is the difference between a PLASTIC SUPPLY duct coupler and a flange adapter?
A PLASTIC SUPPLY duct coupler joins two sections of PVC duct of the same nominal diameter, providing a straight connection. A flange adapter, such as the 14-inch model (PVCF14), connects PVC ductwork to a flanged fitting or equipment. The flange adapter has a longer overall length (18 inches for the 14-inch size) and a flange inner diameter (13 5/8 inches for the 14-inch size) that matches the duct size. Both are made of PVC and are used in low-pressure ventilation and fume extraction systems.
What are the typical applications for PLASTIC SUPPLY PVC duct components?
PLASTIC SUPPLY PVC duct couplers and flange adapters are used in industrial ventilation, fume extraction, and dust collection systems. They are suitable for moving air or lightweight particulates in low-pressure applications. The PVC construction provides resistance to corrosion and chemical attack, making these components appropriate for airstreams containing moisture or vapors. They are commonly installed in ductwork that connects to fans, scrubbers, or other air handling equipment where a secure, leak-resistant joint is required.
How do I select the correct PLASTIC SUPPLY coupler for my ductwork?
To select a PLASTIC SUPPLY coupler, determine the nominal duct diameter of your existing ductwork. The coupler is sized to match that nominal diameter, with inlet and outlet dimensions that correspond to the duct size. For example, a system with 8-inch duct requires the PVCC08 coupler, which has 8 5/8-inch inlet and outlet diameters. Verify the overall length to ensure it fits the available space. For connections to flanged equipment, choose a flange adapter with the matching duct diameter and flange inner diameter.
Are PLASTIC SUPPLY duct couplers suitable for high-temperature applications?
PLASTIC SUPPLY duct couplers are made of PVC, which has temperature limitations. They are intended for low-pressure ventilation and exhaust systems where the airstream temperature is within the service range of PVC. For high-temperature applications, alternative materials such as metal or high-temperature plastics should be considered. Consult the manufacturer’s specifications for the maximum continuous operating temperature of PVC in duct applications.
What part numbers correspond to PLASTIC SUPPLY duct couplers and flange adapters?
PLASTIC SUPPLY uses a part numbering system that indicates the component type and size. Duct couplers are identified by the prefix PVCC followed by the nominal duct diameter in inches: PVCC04 (4-inch), PVCC06 (6-inch), PVCC08 (8-inch), PVCC10 (10-inch), PVCC12 (12-inch), PVCC14 (14-inch), and PVCC16 (16-inch). Flange adapters use the prefix PVCF followed by the nominal duct diameter, such as PVCF14 for the 14-inch flange adapter. These part numbers simplify ordering and cross-referencing.
