A method of manufacturing an electromagnetic flow meter assembly is disclosed. The method comprises forming an insert from a deformable material, forming at least one reinforcing component; arranging the reinforcing component around a portion of the insert, and bonding the reinforcing component to the insert to reinforce the insert against deformation under the application of pressure. An electromagnetic flow meter assembly is also disclosed and comprises an insert for insertion into a flow conduit, wherein at least a portion of the insert is formed of a deformable non-ferromagnetic material, wherein the insert comprises an inlet section, a measuring section, and an outlet section. The assembly further comprises at least one reinforcing component surrounding the measuring section of the insert to reinforce the insert against deformation under the application of pressure.