| http://www.w3.org/ns/prov#value | - Alternatively, the valve member 885 could be made of a flexible material such as silicone, a thermoplastic elastomer, rubber or Ethylene-Propylene-Diene-Monomer (EPDM).The valve seat 887 has a sealing surface 888 that is formed on the outer perimeter of the concave surface of the containment baffle.
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