The very simple design and construction of the FD model features a solid, contoured PTFE (Teflon®) diaphragm in a 316/316L Stainless Steel housing as standard supply with the choice of screwed or welded flange connection. Alternate vessel materials include Polypropylene, Polyvinylchloride (PVC), Carbon Steel, Alloy 20, Hastelloy C, Duplex Stainless Steel, Titanium, Monel, AL6XN and PVDF (Kynar®). Twin port (flow-through) configurations are available as an option.

FD models are supplied with full, comprehensive data books, including: Design Calculations; Material Test Certificates; Hydrostatic and Pressure Test Certificates; Certified Outline and Dimension Drawing; Welding Qualifications and Procedures (if applicable); and IOM, as a minimum.


  • Diaphragm Dampener
  • ASME Dampener
  • Surge Absorbers