| Connection Type: | Threaded |
|---|---|
| Type: | Fitting |
| PEX Size: | 1/2" |
| Size: | 1/2" |
| Used With: | 682 series |
| Max. Working Pressure: | 150 psi |
| Material: | Brass |

No but the pex ends do need to be properly prepped.
The loop fittings are brand specific, as each manufacturer makes their own threads on the manifold that would requite use of the same fitting size, such as R20 on the Uponor Truflow manifolds. So the Caleffi fittings would not be compatible.