TECHNICAL BULLETIN

TAKASAGO SOFT SEAL FEATURE
For Applications Requiring Inert Valves Where Particles Are In Flow Stream

TYPICAL APPLICATIONS
The soft seal option is particularly useful in analytical and clinical chemistry applications where inert valve materials are needed but particulate matter may be present in the fluid stream. Particulate matter typically damages soft material such as PTFE resulting in valve leakage in the valve seat area.

The Soft Seal option is available or standard on most Takasago models.

The Soft Seal Feature Is.....
A valve option where the isolation diaphragm of a Takasago valve is fitted with a soft elastomeric seal ( seat) that yields to particulate matter in the fluid stream.
The seat material is a stable molecular structure consistingof only fluorine, carbon and oxygen atoms. It offers outstanding resistance to chemicals.
Soft Seal Demonstrated
1) A valve seat (photo A) is sprinkled with glass
    beads 40 microns in size.
2) The valve is cycled.
3) Photo B is that of an all PTFE valve seat. Many
    holes can be  observed.
4) Photo C is that of a seat with a soft seal. No
    significant scratches  can be observed.


For assistance call 978-568-3400
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