| Size: | 3/4" x R20 |
|---|---|
| Material: | Brass |
| Application: | Heating |
| Max Pressure (PSI): | 200 |
| Sweat Size: | 3/4" |
| Warranty: | 5 Year |
| Thread Type: | Male |
| Standards Met: | ASTM F877 ASTM F1960 NSF |
| Fitting System Compatibility: | PEX Compression |
| Tubing Compatibility: | PEX,PEX-AL-PEX |
| Max Temp (F): | 200°F |
| Thread Size: | R20 |

Hi Igor. SKU: A4020313 allows for the connection of 5/16" PEX to the manifold loop. If the loop is not in use and you are looking to cap it, you can use SKU: A2080020 - https://www.supplyhouse.com/Uponor-Wirsbo-A2080020-Loop-End-Cap
Those fittings would allow you to connect 3/4" copper tubing to 1/2" PEX-AL-PEX. You could also use parts PAP-0500M and WP3-12-08.
A4342050 is a copper fitting adapter (goes inside a standard copper fitting), while A4332050 is a copper pipe adapter (fits over a standard pipe).