Abstract: A tubular membrane module for example for use in ultrafiltration has a tubular shell made of standard PVC pipe provided with moulded PVC end fittings that are secured to the pipe by epoxy resin adhesive. A membrane tube within the shell extends between the end fittings and is secured by a similar adhesive in respective sockets within the end fittings. Each socket has a blind end that receives the end portion of the membrane tube so that the tube is protected from shear effects due to fluid entering the tube under pressure in use.

Abstract: A tubular membrane module for example for use in ultrafiltration has a tubular shell made of standard PVC pipe and moulded PVC end fittings. A series of membrane tubes within the shell extend between coupling members at both ends. The coupling members fit closely inside the shell and end fittings and are secured in place using epoxy adhesive. A transverse wall in each coupling member is provided with sockets which receive the ends of the tubes and in which the tubes are secured by a similar adhesive. Each socket has a blind end that receives the end portion of the tube so that the tube is protected from shear effects due to fluid entering the tube under pressure in use.

Abstract: A tubular membrane module for use in ultrafiltration or microfiltration has a bundle of membrane tubes that extend between inlet and return headers. The inlet header is fixed to one end of a tubular housing having a permeate outlet while the return header is free to float longitudinally of the housing to accomodate dimensional changes in the tubes with respect to the housing. The tubes are sealed at their ends in sockets in respective potting collars but are mechanically secured and sealed to the headers. The sockets are undercut to protect the membranes from stripping due to fluid shear.