Exceptional Shutoff—Patented bidirectional soft seal ring with pressure-assisting action results in exceptional shutoff rates as shown in the specifications.
Shaft Retention—Redundant shaft retention provides added protection. The packing follower and shaft step interact to hold the shaft securely in the valve body.
Easy Installation—The valve body self-centers on the line flange bolts as a fast, accurate means of centering the valve in the pipeline.
Sour Service Capability—Materials are available for applications handling sour fluids and gases. These materials comply with the requirements of NACE MR0175-2002.
Improved Environmental Capabilities—The optional ENVIRO-SEAL™ packing system is designed with improved sealing, guiding, and loading force transmission. The ENVIRO-SEAL packing system can control emissions to below the EPA (Environmental Protection Agency) limit of 100 ppm (parts per million) for valves.
Low Cost Maintenance—Individual disc/shaft components can be replaced after disassembly due to sleeve and taper pin connections. 