The disc is streamlined for maximum flow and minimum seat wear. Ease of maintenance due to the elimination of bolts, pins, etc., as disc to stem connectors. Elastomer cartridge seat, reinforced with phenolic backing ring, enables valve to be used on pressure or vacuum service. Seat can be field replaced. Three stem seal O-rings are molded into the the seat liner to back up the primary stem seal. For uni-directional dead end service, a unique patented lip, integral to the body prevents the liner from moving downstream, eliminating seat and flange leakage at full rated pressure without the use of downstream flange.
* Teflon ® is a registered trademark of the E.I. DuPont de Nemour Company
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