
Watts AquaLock - Large Diameter Reducing Branch Tee
Large Diameter Reducing Branch Tee
The Watts AquaLock reducing branch tee allows you to create a three-way connection where the branch outlet is a smaller diameter than the run. This fitting connects to copper, CPVC, PEX, LDPE, MDPE, HDPE, and polypropylene tubing without tools, clamps, or soldering—just push to connect and pull to verify lock.
Compatibility Reference
| Polypropylene Tubing | Copper Tube Size (CTS) | Inside Diameter |
|---|---|---|
| 3/8" OD | 1/4" CTS | ID Match |
| 1/2" OD | 3/8" CTS | ID Match |
| 5/8" OD | 1/2" CTS | ID Match |
| 7/8" OD | 3/4" CTS | ID Match |
| 1-1/8" OD | 1" CTS | ID Match |
Tubing Materials
AquaLock fittings work with copper, CPVC, PEX, LDPE, MDPE, HDPE, and polypropylene tubing. Use the CTS (copper tube size) reference for proper sizing—this refers to the inside diameter of copper pipe, not the outside diameter. For threaded connections, the fitting uses NPT (National Pipe Tapered) standards. Branch reducing tees are ideal for creating smaller-diameter supply lines from a main run, common in under-sink RO systems and point-of-use filtration installations.
Large Diameter Reducing Branch Tee
The Watts AquaLock reducing branch tee allows you to create a three-way connection where the branch outlet is a smaller diameter than the run. This fitting connects to copper, CPVC, PEX, LDPE, MDPE, HDPE, and polypropylene tubing without tools, clamps, or soldering—just push to connect and pull to verify lock.
Compatibility Reference
| Polypropylene Tubing | Copper Tube Size (CTS) | Inside Diameter |
|---|---|---|
| 3/8" OD | 1/4" CTS | ID Match |
| 1/2" OD | 3/8" CTS | ID Match |
| 5/8" OD | 1/2" CTS | ID Match |
| 7/8" OD | 3/4" CTS | ID Match |
| 1-1/8" OD | 1" CTS | ID Match |
Tubing Materials
AquaLock fittings work with copper, CPVC, PEX, LDPE, MDPE, HDPE, and polypropylene tubing. Use the CTS (copper tube size) reference for proper sizing—this refers to the inside diameter of copper pipe, not the outside diameter. For threaded connections, the fitting uses NPT (National Pipe Tapered) standards. Branch reducing tees are ideal for creating smaller-diameter supply lines from a main run, common in under-sink RO systems and point-of-use filtration installations.
Original: $14.07
-65%$14.07
$4.92Description
Large Diameter Reducing Branch Tee
The Watts AquaLock reducing branch tee allows you to create a three-way connection where the branch outlet is a smaller diameter than the run. This fitting connects to copper, CPVC, PEX, LDPE, MDPE, HDPE, and polypropylene tubing without tools, clamps, or soldering—just push to connect and pull to verify lock.
Compatibility Reference
| Polypropylene Tubing | Copper Tube Size (CTS) | Inside Diameter |
|---|---|---|
| 3/8" OD | 1/4" CTS | ID Match |
| 1/2" OD | 3/8" CTS | ID Match |
| 5/8" OD | 1/2" CTS | ID Match |
| 7/8" OD | 3/4" CTS | ID Match |
| 1-1/8" OD | 1" CTS | ID Match |
Tubing Materials
AquaLock fittings work with copper, CPVC, PEX, LDPE, MDPE, HDPE, and polypropylene tubing. Use the CTS (copper tube size) reference for proper sizing—this refers to the inside diameter of copper pipe, not the outside diameter. For threaded connections, the fitting uses NPT (National Pipe Tapered) standards. Branch reducing tees are ideal for creating smaller-diameter supply lines from a main run, common in under-sink RO systems and point-of-use filtration installations.



















