Essentially, the laminated PTFE diaphragm combines the advantages of a highly chemically resistant diaphragm with the flexibility that the elastomer provides, so it offers greater mechanical durability and memory than a two-piece separated diaphragm. It also performs better in terms of strength on actuated valves and can be swapped directly in the plant for rubber diaphragms thanks to its threaded pin connection to the compressor. It is available up to DN 150.

Two-piece PTFE diaphragms with a rubber backing are more suitable for higher operating cycles, for abrasive fluids and wherever permeable gases or highly aggressive chemicals may be present, which they will resist better thanks to the greater thickness of the PTFE layer.