NIB – Crouse Hinds – CPR30 – Eaton 4″ Compression Coupling For Rigid/Imc Conduit The Eaton CPR30 is a Crouse-Hinds series compression coupling designed for Rigid/IMC conduits. It is made from malleable iron and suitable for ordinary/non-hazardous locations. Catalog Number: CPR30. byJuly 5, 2026