The E90016 Walchem Foot Valve is obsolete and is replaced by the FSVCN-8U that has a new style of tubing connection. For reference, here are the specifications of the old model:
Specifications
Type: 1/2″ OD Tube Connection
Materials: PVC/Ceramic/FKM
Weight: 0.1 lbs
Go to our FSVCN-8U page to view and/or purchase the new model.