Here I want to list some of the most common types of PVC pipe fittings used in plumbing aquariums.
Coupling – Used to connect to sections of pipe together.
Tee Coupling – Used to connect three sections of pipe together.
90% Elbow – Used to change the direction of the pipe. Each elbow starts to slow down the speed of the water.
Threaded Female Elbow – Connects a pipe to a male threaded fitting.
Threaded Male Elbow – Connects a pipe to a female threaded fitting.
45% Elbow – Used to change the direction of the pipe. Two of these together to form a 90% change doesn’t slow the water quite as much as a single 90% elbow. This has more relevance in free flow drain lines.
Male Adapter – Converts a pipe end to a threaded fitting.
Female Adapter – Converts a pipe end to a fitting that will accept a male threaded fitting.
Street Elbow – An elbow that has one end that will fit into another fitting without having to cut a small section of pipe to connect them.
Reducer or Bushing – a fitting that will change the pipe size to either smaller or larger.
Cap & Plug – seals off the end of a pipe.
Union – Allows a section of pipe to be removed.
Ball & Gate Valves – Allow flow control of water
Barb Fitting – Used to connect tubing to PVC Pipe