Valves for Aquarium Plumbing

What is a check valve? A check valve prevents backflow. An aquarium swing check valve is an aquarium backflow preventer that stops a back drain in an aquarium during power outage. Want to know how to install a check valve for an aquarium? The check valve goes on the return line between return pump and return inlet. In a power outage, the flapper closes to prevent an aquarium flood.

Thinking about a gate valve vs ball valve? Both allow you to control and reduce water flow. A ball valve costs less but a gate valve is more precise. Use a gate valve for highly sensitive applications like a protein skimmer inlet and a ball valve for an aquarium media reactor, etc..

MPT, or male pipe thread, has threads on the outside wall
FPT, or female pipe thread, has threads on the inside wall
A PVC slip fitting, or slip fit, has no threads and connects to PVC pipe
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