The flanged collar d63 is a plastic connection part used when connecting DN63 PVC pipework to the hydraulic port of the Espa Silen S and Silen S2 pumps. The part forms a component of the union coupling and, when correctly installed, guarantees an airtight seal without the use of sealing tape.
The original dimensions ensure a precise fit on the body of the pump and eliminate the risk of water leakage at the connection point. The material withstands standard pool temperatures, pressure and disinfectant preparations.
Replacement of the collar is appropriate in the event of cracking or deformation of the original part caused by overtightening or frost.
