The POSI-SEAL Package
The POSI-SEAL Package (PSP)combines a Type A41 High Performance Butterfly Valve, a Rack and Pinion 1035 Actuator, your choice of PMV Positioners, TopWorx Limit Switches, and a wide variety of Solenoid valves
The combination of the POSI-SEAL valves, actuator and accessories assures you of the performance, reliability and dependability that you have come to expect from Fisher.
The PSP offers complete compatibility, a competitive price and the most flexible automated valve package in the industry.
The A41 High Performance Butterfly Valve provides...
- 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.
- 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 500 ppm (parts per million) for valves. - Low Cost Maintenance—Individual disk/shaft components can be replaced after disassembly due to taper pin and hollow pin connections in the 3- through 12-inch sizes.
The 1035 Rack and Pinion Actuator provides...
- Three Point Suspension System—Three carbon filled PTFE guide bands provide a low friction bearing surface for piston alignment and rack support.