23
AsepticDiaphragmValves
PTFEDiaphragms
CRANE ChemPharma, Saunders Life Science PTFE
diaphragms offer the highest possible level of product
security due to the inert properties of PTFE. PTFE can
withstandallmediaused in thebio-process industrieswhile
offering very low levels of extractables and leachables.
Modified PTFE diaphragms offer excellent performance on
intermittent steamapplications typical of SIP service.
Type214/425PTFEDiaphragms
· 100%virginPTFEproduct contact face
· Inert andunaffectedbymediacommon tobio-process
applications
· Extremely low levelsof extractablesand leachables
· Very smooth, hydrophobic surfacecleanseasily
· Manufactured from raw resin in-house
· Fabric reinforcedEPMbacking
30
25
20
15
10
5
0
15
(2175)
10
(1450)
5
(725)
0
Standard 214 PTFE
214S PTFE
Druck N/mm
2
% VERFORMUNG
Type214S/425ModifiedPTFEDiaphragms
The 214S diaphragm offers outstanding performance on
the most critical bio-processing applications, especially on
intermittent steam. The additionof a small amount of aPTFE
co-polymer increases the ratio of crystalline to amorphous
microstructure. This results in greatly improved resistance to
creep over PTFE, especially when subject to heat and load.
ModifiedPTFEoffers the same featuresof PTFE, plus:
· Significant reduction incold flowdeformation typically
associatedwithconventional PTFEcomponentspresent in
bio-pharm systems
· Significantperformance improvementunder aggressive
steam sterilizationandpurewater-basedmedia
· Manufactured in-house from raw resin
· Fabric reinforcedEPMbacking
