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Gate Valves

An aquarium gate valve provides precision water flow control with sensitive aquarium filtration like a protein skimmer.

A gate valve is a PVC part with a flow control knob that opens or closes a gate in the PVC fitting. Use a gate valve wherever small changes in flow make a big difference. For example, protein skimmer performance can change drastically with a minor change in flow.

PVC fittings are listed according to PVC pipe sizes, not the actual measurement of the part. So, a 1 inch slip elbow does not measure 1 inch but fits onto 1 inch PVC pipe. PVC fittings are categorized by the types of connections they make:

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
PVC insert fittings, or hose barb fittings, connect to aquarium tubing (not flex PVC pipe)
A reducer fitting reduces PVC size

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