SAUNDERS® PV Passivation Diaphragm

Saunders® PV Passivation Diaphragm is a dedicated “single use” elastomer diaphragm developed for passivation service of stainless steel Biopharm systems. The design is manufactured from FDA/USP compliant elastomer and is supplied with bayonet attachment for interchangeability with Saunders® PTFE/TFM range.

Features And Benefits

  • Reduced cost and TCO (Total Cost of Ownership) benefits versus single use of PTFE diaphragm
  • High visibility tag reduces risk of diaphragm not being replaced after passivation
  • Materials suitable for use with citric acid and EDTA-based passivation chemicals and typical post passivation clean and rinse solutions

Technical Details


  • Bayonet style attachment for interchangeability with Saunders® TFM / PTFE Range


  • EPDM


  • DN15 (0.50”) – DN150 (6.00”)


  • -40 ⁰C (-40 ⁰F) to 110 ⁰C (230 ⁰F) Liquid Media
  • 150 °C (302 ⁰F) Max Steam Sterilization (Max 180 minutes per cycle)


  • FDA-compliant to 21CFR part 177.2600
  • Compliant to USP Class V and VI, <87>, <88>
  • Compliant with ASME BPE part SG
  • Certified ADCF (Animal Derived Component Free), certified phthalate free and PFOA free
  • Fully lot traceable to EN 10204 3.1
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