MA 08 - PTFE backed EPDM - SED Diaphragm


SED Diaphragms

The diaphragm is the most important component of the diaphragm valve. Besides the valve body, the diaphragm is the only part which contacts the process medium. It is the dynamic part with which the flow rate of the process medium is controlled and/or stopped.

The PTFE MA 8 consists of a seperate EPDM backing cushion and a PTFE diaphragm. It is designed as one-piece diaphragm: this means that the EPDM back is bonded with the PTFE. The diaphragm is always manufactured in the molded open position. These one-piece diaphragms have less surface area and are subject to shorter linear strokes. MA 8 diaphragm incorporates an elastomer button for assembly with the valve operating mechanism. This eliminates the potential for point loading at the center of the diaphragm.

PTFE diaphragms offer the highest degree of chemical resistance, increased stability, longer flex life, less porosity, reduced cold flow, and superior performance through temperature fluctuations between hot and cold and steam sterilization cycles.
Batch traceable by a set of unique codes molded into the diaphragm dvary.

Suitable for diaphragm valves: KMA 205, KMA 190, Steripur 206, Steripur 217.25, Steripur 217.30
SED Articlenumber: 00210.190.508.51 PTFE/EPDM

Technical Information

Sizes DN8 to DN15, IMP 1/4"- 1/2"
Temp. range -20°C to 150°C
Connections Button
Material PTFE backed EPDM Diaphragm (bonded)
Certificates FDA, USP Class VI 121 ºC, {87}, {88}, TSE/BSE (ADCF), 3-A Sanitary Class II and III, Extractable organic substances (ISO 10993-18)

pdfDatasheet SED Diaphragms
English - 832 kB - TD06 0018 rev. L