A duct system, also known as ductwork, is a network of tubes, rectangular, or cylindrical devices that transport cold or hot air from a system to an enclosed space. You have to install the ducts by burying them inside the walls, underneath the floors, or on the ceilings. However, you’ll need different types of duct fittings for their installation.
Duct fittings are small devices that make the ductwork installation more secure and help to attach the ducts firmly to the air conditioning or other systems. They are not free-standing components but are add-ons to an existing ductwork.
Different Types of Duct Fittings
These devices can be categorized based on various factors such as the materials they are made of, their shapes, or the systems they used with. You’ll see stainless steel or PVC duct fittings; spiral, round, or rectangular duct fittings; air, heat, ventilation, or HVAC duct fittings; and more. Hence we’ll discuss here some fittings that are commonly used in household and commercial ductwork.
90 Degree Elbows
They help airflow changing the direction in a straight run of duct system. You’ll see their wide uses in fume, mist, and dust collection applications. Due to their applications in harsh environments, they are mainly made of PVC to become resistant to corrosion, oxidants, salts, bases, aliphatic solutions, and most acids.
Press-On Collars with Dampers
They help in regulating the airflow or stop it inside a duct. The recent models are engineered with modern technology that is more energy-efficient without affecting the efficiency of the entire system.
Connector Sleeve Fittings
It is one of those types of duct fittings that used with round exhaust ducts for providing an airtight connection. Therefore featuring a polyethylene gasket, their 1-bolt design makes the reassembly of ductwork easier.
Pipe Hangers & Flex Connectors
Pipe hangers reduce pipe movement. They connect to ceilings directly. On the other hand, flex connectors do the job of isolating noise and vibration to the devices they are attached to.
Duct End Caps & Duct Clamps
Their function is to cap off an unused ducting port. Made of PVC to show resistance to corrosion and different types of chemical reactions in harsh environments. These fittings are often used with a clamp for sealing the port more securely.
Duct clamps act as a bridge between two components and create a tight seal with quick closing and opening.
They make it easier for a duct system to connect with devices requiring the subtraction of dust or fume.
Tees & Duct Reducers
Tees do the job of creating a 90-degree angle in an HVAC system while duct reducers help to reduce the size of an HVAC ductwork.
Besides the fittings mentioned above, there are various types of duct fittings available for different kinds of electric supply heating and cooling systems. So you’ll see the use of angle flange adapters, adjustable nipples, hose adapters, moisture drain fittings, butterfly valves, and more.