Send one return line in two directions.Loc-Line Y-Fittings split a single modular hose feed into two independently aimable outlets, so you can cover both ends of the tank, run a return alongside a spray bar, or feed two reactors from one pump. Pick the 1/2″ Y, the 3/4″ Y, or the 3/4″ x 1/2″ Y reducer to match the line you are running. Like every Loc-Line part, they snap together by hand and reposition in seconds. Made in the USA.
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Why Aquarists Reach for Loc-Line
- Tool-free assembly.Ball-and-socket segments click together and pull apart by hand. No glue, clamps, or cement.
- Aim each branch on its own.Both outlets pivot and lock independently, so you can point one across the surface and the other toward a dead spot.
- Repositionable for life.Re-plumb as your aquascape changes. The fittings hold their shape but never permanently bond.
- Reef and freshwater safe.Inert acetal construction will not leach into your water.
- Made in the USAby the original modular-hose manufacturer.
Choose Your Y-Fitting
| Option | Connections | What it does | Best for |
|---|---|---|---|
| 1/2″ Y | One 1/2″ in, two 1/2″ out | Splits a single 1/2″ line into two equal branches | Nano and mid-size tanks running the 1/2″ system |
| 3/4″ Y | One 3/4″ in, two 3/4″ out | Splits a single 3/4″ line into two equal branches | High-flow returns and closed loops on the 3/4″ system |
| 3/4″ x 1/2″ Y Reducer | One 3/4″ in, two 1/2″ out | Splits and steps down at the same time | Feeding two finer 1/2″ outlets from one 3/4″ feed line |
Specifications
| Brand | Loc-Line |
| Fitting type | Y splitter / branch fitting |
| Sizes offered | 1/2″ Y, 3/4″ Y, 3/4″ x 1/2″ Y reducer |
| Material | Acetal copolymer, reef and freshwater safe |
| Assembly | Tool-free, hand-assembled and repositionable |
| Best for | Low-pressure aquarium returns and closed loops (about 10 to 20 PSI) |
| Country of origin | Made in USA |
| Sold as | Single Y-fitting (choose size above) |
Complete Your Loc-Line Setup
- Loc-Line 3/4″ x 1/2″ Adapter for a straight, in-line step-down
- Loc-Line 1/2″ Nozzles and 3/4″ Nozzles to finish each outlet
- Loc-Line 6-Segment Sections to add reach and angles
- Loc-Line In-Line Valves to throttle each branch separately
- Loc-Line Assembly Pliers for easy disassembly of tight joints
FAQ
Which Y do I need?
Match the Y to the line feeding it. Running 1/2″ hose, choose the 1/2″ Y. Running 3/4″ hose, choose the 3/4″ Y. Want to feed two smaller 1/2″ outlets from a single 3/4″ line, choose the 3/4″ x 1/2″ Y reducer.
Can I aim the two outlets in different directions?
Yes. Each branch is its own jointed run, so you can point them independently and re-aim them any time.
Do I need glue or threading?
No. Loc-Line snaps together by hand and stays put under normal return-pump flow. Pull it apart whenever you want to re-plumb.
Is it safe for reef and planted tanks?
Yes. Loc-Line is molded from inert acetal that will not alter water chemistry in fresh or salt water.
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