Large Diameter Stackable Hose Barb Union
The Watts AquaLock Large Diameter Stackable Hose Barb Union provides secure, leak-resistant connections for copper, CPVC, PEX, LDPE, MDPE, HDPE, and polypropylene tubing without threading or soldering. Designed for large diameter applications, this fitting integrates seamlessly into residential and light commercial water treatment systems where reliable push-to-connect joints are required.
Tubing Compatibility Reference
| Polypropylene Tubing (OD) | Copper Tube Size (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 |
NPT Pipe Thread Reference
| 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 |
Supported Tubing Materials
AquaLock fittings connect to copper, CPVC, PEX, LDPE, MDPE, HDPE, and polypropylene tubing. CTS refers to copper tube size (inside diameter), NPT is National Pipe Tapered thread standard used for male (MIP) or female (FIP) connections, NPS is National Pipe Straight thread (IPS), and MGHT designates male garden hose thread. The stackable hose barb design accommodates large diameter lines common in whole-house filtration, reverse osmosis feed lines, and distribution manifolds.
