Watts AquaLock - Large Diameter Reducing Union Tee
Watts AquaLock Large Diameter Reducing Union Tee
Professional push-to-connect tee fitting for plumbing transitions between different tubing sizes in reverse osmosis and filtration systems
Quick-connect branch fitting that reduces from one tubing size to two smaller outlet sizes
The Watts AquaLock reducing union tee is a push-fit connector designed for creating branch connections in water filtration plumbing where you need to split flow and reduce to smaller line sizes. Compatible with copper, CPVC, PEX, and all polyethylene tubing types including polypropylene. No crimping, clamping, or soldering required.
Works with all major tubing materials
Connects directly to copper tube (CTS sizing from 1/4" to 1" ID), CPVC, PEX, LDPE, MDPE, HDPE, and polypropylene tubing. Polypropylene sizes from 3/8" OD to 1-1/8" OD. Also compatible with NPT threaded connections from 1/4" to 2" pipe thread. Commonly used in Watts, iSpring, APEC, Home Master, and other reverse osmosis system installations requiring size transitions at tee points.
Sizing chart for tubing and thread standards
| Polypropylene Tubing OD | Copper Tube Size (CTS) ID |
|---|---|
| 3/8" OD | 1/4" CTS |
| 1/2" OD | 3/8" CTS |
| 5/8" OD | 1/2" CTS |
| 7/8" OD | 3/4" CTS |
| 1-1/8" OD | 1" CTS |
| OD Actual (Inches) | Pipe Thread Size (NPT) |
|---|---|
| 0.540" | 1/4" NPT |
| 0.675" | 3/8" NPT |
| 0.840" | 1/2" NPT |
| 1.050" | 3/4" NPT |
| 1.315" | 1" NPT |
| 1.660" | 1-1/4" NPT |
| 1.900" | 1-1/2" NPT |
| 2.375" | 2" NPT |
CTS = Copper Tube Size | NPT = National Pipe Tapered Thread | NPS = National Pipe Straight Thread | MGHT = Male Garden Hose Thread
Tool-Free Assembly
Push tubing in until it seats, no wrenches or crimpers needed
Leak-Resistant Seal
Internal O-ring and grip collar design holds pressure securely
Reusable Connection
Disconnect and reconnect without damaging fitting or tubing
Size Reduction Built In
Transition from larger inlet to smaller branch outlets in one fitting
Watts AquaLock Large Diameter Reducing Union Tee
Professional push-to-connect tee fitting for plumbing transitions between different tubing sizes in reverse osmosis and filtration systems
Quick-connect branch fitting that reduces from one tubing size to two smaller outlet sizes
The Watts AquaLock reducing union tee is a push-fit connector designed for creating branch connections in water filtration plumbing where you need to split flow and reduce to smaller line sizes. Compatible with copper, CPVC, PEX, and all polyethylene tubing types including polypropylene. No crimping, clamping, or soldering required.
Works with all major tubing materials
Connects directly to copper tube (CTS sizing from 1/4" to 1" ID), CPVC, PEX, LDPE, MDPE, HDPE, and polypropylene tubing. Polypropylene sizes from 3/8" OD to 1-1/8" OD. Also compatible with NPT threaded connections from 1/4" to 2" pipe thread. Commonly used in Watts, iSpring, APEC, Home Master, and other reverse osmosis system installations requiring size transitions at tee points.
Sizing chart for tubing and thread standards
| Polypropylene Tubing OD | Copper Tube Size (CTS) ID |
|---|---|
| 3/8" OD | 1/4" CTS |
| 1/2" OD | 3/8" CTS |
| 5/8" OD | 1/2" CTS |
| 7/8" OD | 3/4" CTS |
| 1-1/8" OD | 1" CTS |
| OD Actual (Inches) | Pipe Thread Size (NPT) |
|---|---|
| 0.540" | 1/4" NPT |
| 0.675" | 3/8" NPT |
| 0.840" | 1/2" NPT |
| 1.050" | 3/4" NPT |
| 1.315" | 1" NPT |
| 1.660" | 1-1/4" NPT |
| 1.900" | 1-1/2" NPT |
| 2.375" | 2" NPT |
CTS = Copper Tube Size | NPT = National Pipe Tapered Thread | NPS = National Pipe Straight Thread | MGHT = Male Garden Hose Thread
Tool-Free Assembly
Push tubing in until it seats, no wrenches or crimpers needed
Leak-Resistant Seal
Internal O-ring and grip collar design holds pressure securely
Reusable Connection
Disconnect and reconnect without damaging fitting or tubing
Size Reduction Built In
Transition from larger inlet to smaller branch outlets in one fitting
Original: $12.02
-65%$12.02
$4.21Description
Watts AquaLock Large Diameter Reducing Union Tee
Professional push-to-connect tee fitting for plumbing transitions between different tubing sizes in reverse osmosis and filtration systems
Quick-connect branch fitting that reduces from one tubing size to two smaller outlet sizes
The Watts AquaLock reducing union tee is a push-fit connector designed for creating branch connections in water filtration plumbing where you need to split flow and reduce to smaller line sizes. Compatible with copper, CPVC, PEX, and all polyethylene tubing types including polypropylene. No crimping, clamping, or soldering required.
Works with all major tubing materials
Connects directly to copper tube (CTS sizing from 1/4" to 1" ID), CPVC, PEX, LDPE, MDPE, HDPE, and polypropylene tubing. Polypropylene sizes from 3/8" OD to 1-1/8" OD. Also compatible with NPT threaded connections from 1/4" to 2" pipe thread. Commonly used in Watts, iSpring, APEC, Home Master, and other reverse osmosis system installations requiring size transitions at tee points.
Sizing chart for tubing and thread standards
| Polypropylene Tubing OD | Copper Tube Size (CTS) ID |
|---|---|
| 3/8" OD | 1/4" CTS |
| 1/2" OD | 3/8" CTS |
| 5/8" OD | 1/2" CTS |
| 7/8" OD | 3/4" CTS |
| 1-1/8" OD | 1" CTS |
| OD Actual (Inches) | Pipe Thread Size (NPT) |
|---|---|
| 0.540" | 1/4" NPT |
| 0.675" | 3/8" NPT |
| 0.840" | 1/2" NPT |
| 1.050" | 3/4" NPT |
| 1.315" | 1" NPT |
| 1.660" | 1-1/4" NPT |
| 1.900" | 1-1/2" NPT |
| 2.375" | 2" NPT |
CTS = Copper Tube Size | NPT = National Pipe Tapered Thread | NPS = National Pipe Straight Thread | MGHT = Male Garden Hose Thread
Tool-Free Assembly
Push tubing in until it seats, no wrenches or crimpers needed
Leak-Resistant Seal
Internal O-ring and grip collar design holds pressure securely
Reusable Connection
Disconnect and reconnect without damaging fitting or tubing
Size Reduction Built In
Transition from larger inlet to smaller branch outlets in one fitting
