
Watts AquaLock - Large Diameter Union Connector
Watts AquaLock Large Diameter Union Connector
The Watts AquaLock Large Diameter Union Connector provides reliable, leak-free connections for tubing sizes from 3/4" to 2" copper tube size equivalent. This push-to-connect fitting eliminates the need for soldering, crimping, or threading while maintaining compatibility with copper, CPVC, PEX, and polyethylene tubing systems commonly found in whole-house filtration and reverse osmosis installations.
Tubing Compatibility Reference
| Polypropylene Tubing OD | Copper Tube Size (CTS) ID | Application |
|---|---|---|
| 3/8" OD | 1/4" CTS | Standard RO tubing |
| 1/2" OD | 3/8" CTS | Standard RO tubing |
| 5/8" OD | 1/2" CTS | Large capacity systems |
| 7/8" OD | 3/4" CTS | Whole-house filtration |
| 1-1/8" OD | 1" CTS | Commercial systems |
Multi-Material Connection System
AquaLock fittings connect directly to copper, CPVC, PEX, LDPE, MDPE, HDPE, and polypropylene tubing without adapters or specialty tools. The push-to-connect collet design grips the tubing exterior while an internal O-ring creates a watertight seal rated for standard residential water pressure. These union connectors are particularly useful in applications requiring periodic disconnection for filter changes or system maintenance, as they can be released and reconnected multiple times without degradation. Note that CTS sizing refers to copper tube size (inside diameter), NPT refers to national pipe tapered thread standards, and OD measurements indicate actual outside diameter of compatible tubing.
Watts AquaLock Large Diameter Union Connector
The Watts AquaLock Large Diameter Union Connector provides reliable, leak-free connections for tubing sizes from 3/4" to 2" copper tube size equivalent. This push-to-connect fitting eliminates the need for soldering, crimping, or threading while maintaining compatibility with copper, CPVC, PEX, and polyethylene tubing systems commonly found in whole-house filtration and reverse osmosis installations.
Tubing Compatibility Reference
| Polypropylene Tubing OD | Copper Tube Size (CTS) ID | Application |
|---|---|---|
| 3/8" OD | 1/4" CTS | Standard RO tubing |
| 1/2" OD | 3/8" CTS | Standard RO tubing |
| 5/8" OD | 1/2" CTS | Large capacity systems |
| 7/8" OD | 3/4" CTS | Whole-house filtration |
| 1-1/8" OD | 1" CTS | Commercial systems |
Multi-Material Connection System
AquaLock fittings connect directly to copper, CPVC, PEX, LDPE, MDPE, HDPE, and polypropylene tubing without adapters or specialty tools. The push-to-connect collet design grips the tubing exterior while an internal O-ring creates a watertight seal rated for standard residential water pressure. These union connectors are particularly useful in applications requiring periodic disconnection for filter changes or system maintenance, as they can be released and reconnected multiple times without degradation. Note that CTS sizing refers to copper tube size (inside diameter), NPT refers to national pipe tapered thread standards, and OD measurements indicate actual outside diameter of compatible tubing.
Original: $5.23
-65%$5.23
$1.83Description
Watts AquaLock Large Diameter Union Connector
The Watts AquaLock Large Diameter Union Connector provides reliable, leak-free connections for tubing sizes from 3/4" to 2" copper tube size equivalent. This push-to-connect fitting eliminates the need for soldering, crimping, or threading while maintaining compatibility with copper, CPVC, PEX, and polyethylene tubing systems commonly found in whole-house filtration and reverse osmosis installations.
Tubing Compatibility Reference
| Polypropylene Tubing OD | Copper Tube Size (CTS) ID | Application |
|---|---|---|
| 3/8" OD | 1/4" CTS | Standard RO tubing |
| 1/2" OD | 3/8" CTS | Standard RO tubing |
| 5/8" OD | 1/2" CTS | Large capacity systems |
| 7/8" OD | 3/4" CTS | Whole-house filtration |
| 1-1/8" OD | 1" CTS | Commercial systems |
Multi-Material Connection System
AquaLock fittings connect directly to copper, CPVC, PEX, LDPE, MDPE, HDPE, and polypropylene tubing without adapters or specialty tools. The push-to-connect collet design grips the tubing exterior while an internal O-ring creates a watertight seal rated for standard residential water pressure. These union connectors are particularly useful in applications requiring periodic disconnection for filter changes or system maintenance, as they can be released and reconnected multiple times without degradation. Note that CTS sizing refers to copper tube size (inside diameter), NPT refers to national pipe tapered thread standards, and OD measurements indicate actual outside diameter of compatible tubing.



















