17 JamesburyValve Solutions • Positive shaft retention prevents movement of the shaft past the compression plate. • Flexible-lip polymeric seat assures positive shut-off, compensating for wear to extend life. • Easy maintenance — only the insert needs to be removed to replace the seat. The insert and seat are self-aligning. • Wafer-Sphere Fire-Tite valves meet the requirements of API 607, 4th edition with a secondary metal seat that ensures tight sealing before, during and after a fire. • Low output torque requirements allow the use of less costly actuators. • Available in 150 lb. (Series 815), 300 lb. (Series 830), and 600 lb. ( Series 860) pressure classes — in wafer and in single-flanged lugged designs. • Available in a broad range of materials for standard and special services including chlorine, oxygen, cryogenics and vacuum.
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