Valve Series 3A/3AH
Series 3A/3AH valves are a double flanged design which can be used for dead-end service.
The primary seal is achieved by pre-loaded contact of spherically machined hand polished disc hubs with unique molded seat flat surfaces. This sealing method isolates the flowing media from the stem and body material at all angles of valve disc seating. A secondary seal is achieved by an interference fit of the stem and seat hole diameters.
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