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Sliding-Stem Live-Loaded Packing

Sliding-Stem Live-Loaded Packing
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Product Bulletin Sliding-Stem Live-Loaded Packing Fisher™ ENVIRO-SEAL™ and HIGH-SEAL Packing Systems for Sliding-Stem Valves (Live-Loaded) Fisher ENVIRO-SEAL and HIGH-SEAL live-loaded packing systems offer exceptional stem sealing capabilities. These systems easily install in your existing valves or can be purchased with new valves. ENVIRO-SEAL and HIGH-SEAL packing systems help seal your process to conserve valuable process fluid and protect the environment against the emission of hazardous or polluting fluids. The long life and reliability of these systems also reduce your maintenance costs and downtime. For process control applications requiring compliance with mandated environmental protection regulations, the unique ENVIRO-SEAL packing system and, for hazardous service, the ENVIRO-SEAL bellows seal system are offered. These packing systems keep fugitive emission concentrations below the 100 ppm (parts per million) requirement set by the federal Environmental Protection Agency (EPA). The HIGH-SEAL packing system (figure 1) provides excellent sealing at pressure/temperature ratings beyond ENVIRO-SEAL limits. Both ENVIRO-SEAL and HIGH-SEAL packing systems feature live-loading and unique packing-ring arrangements for consistent, long-term sealing performance. The ENVIRO-SEAL packing system is available in double PTFE, graphite ULF, and duplex configurations. The HIGH-SEAL packing system is offered without PTFE washers (graphite composite), for nuclear applications where PTFE is prohibited, and with PTFE washers (graphite ULF) for all other applications. VALVE STEM PACKING FLANGE BELLEVILLE SPRINGS PACKING FOLLOWER VALVE BONNET Fisher easy-e™ Valve Bonnet with ENVIRO-SEAL Packing Installed Features n Compliance with the Clean Air Act-- The excellent stem sealing of the ENVIRO-SEAL packing system (figure 1) controls emissions to below the EPA minimum of 100 ppm (parts per million). ENVIRO-SEAL packing systems provide an excellent stem seal to help prevent the loss of process fluid. n Improved Service Life-- ENVIRO-SEAL and HIGH-SEAL packing systems, coupled with a very smooth stem surface and live-loading, give you long service life with very low maintenance. The live-loading provides a constant load over the life of the packing material. This greatly reduces or, in

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Product Bulletin 59.1:061 September 2017 many applications, helps to eliminate your need for packing box adjustment and maintenance. The installed packing system provides excellent sealing, guiding, and transmission of loading force. n Easy Installation in Existing Valves-- All parts needed to install the systems in existing valves are available in a convenient kit. n Adaptable to Many Applications-- ENVIRO-SEAL systems are available with PTFE, Graphite ULF, or Duplex packing for 9.5 through 31.8 mm (3/8 through 1-1/4 inch) diameter valve stems on CL125 through CL600 valves. HIGH-SEAL...

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Product Bulletin Sliding-Stem Live-Loaded Packing ENVIRO-SEAL Packing System Specifications Applicable Sliding-Stem Valve Designs and Stem Diameters See tables 1, 2, and 3 Pressures and Temperatures(1) See bulletin 59.1:062, Packing Selection Guidelines for Sliding-Stem Valves, D101986X012. Construction Materials PTFE Packing Systems: Packing Ring and Lower Wiper: PTFE V-ring(2) Male and Female Adaptor Rings: Carbon-filled PTFE V-ring Optional Male and Female Adaptor Rings: Glass-filled PTFE V-ring Graphite ULF Packing Systems: Packing Rings: Graphite Anti-Extrusion Washer: Filled PTFE (not...

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Product Bulletin Sliding-Stem Live-Loaded Packing Figure 1. Fisher ENVIRO-SEAL and HIGH-SEAL Packing Systems PACKING BOX STUD ANTIEXTRUSION RING PACKING RING FOLLOWER PACKING VALVE BONNET LANTERN RING TYPICAL ENVIRO-SEAL PACKING SYSTEM WITH GRAPHITE ULF PACKING TYPICAL ENVIRO-SEAL PACKING SYSTEM WITH PTFE PACKING PACKING BOX STUD SPRING FOLLOWER PACKING TYPICAL ENVIRO-SEAL PACKING SYSTEM WITH DUPLEX PACKING TYPICAL HIGH-SEAL PACKING SYSTEM WITH GRAPHITE ULF PACKING

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Product Bulletin Sliding-Stem Live-Loaded Packing Table 1. Sliding-Stem Product Availability for Fisher ENVIRO-SEAL PTFE and Graphite ULF Packing Systems VALVE TYPE STEM DIAMETER, mm (INCHES) 9.5 (3/8) Table 2. Sliding-Stem Product Availability for Fisher ENVIRO-SEAL Duplex Packing VALVE TYPE STEM DIAMETER, mm (INCHES) 9.5 (3/8)

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Product Bulletin Sliding-Stem Live-Loaded Packing Figure 2. Fisher ENVIRO-SEAL H2 Duplex Packing System PACKING FLANGE PACKING BOX STUD FOLLOWER ANTI-EXTRUSION WASHER GRAPHITE BUSHING GUIDE PACKING LANTERN RING ENVIRO-SEAL H2 DUPLEX PACKING Table 3. Sliding-Stem Product Availability for Fisher ENVIRO-SEAL H2 Duplex Packing VALVE TYPE STEM DIAMETER, mm (INCHES) 12.7 (1/2)

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Product Bulletin Sliding-Stem Live-Loaded Packing Figure 3. Applications Guidelines Chart for 100 PPM Service -46 110 ENVIRO-SEAL GRAPHITE ULF HIGH-SEAL GRAPHITE ULF Figure 4. Applications Guidelines Chart for Nonenvironmental Service -240 ENVIRO-SEAL PTFE AND ENVIRO-SEAL DUPLEX HIGH-SEAL GRAPHITE ULF, GRAPHITE ULF HIGH-SEAL GRAPHITE

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Product Bulletin 59.1:061 September 2017 Sliding-Stem Live-Loaded Packing D101633X012 Ordering Information 6. Valve stem diameter and bonnet type (plain, extension, or bellows) When ordering, specify: 7. Refer to the specifications. Review the information under each specification. Write down your choice whenever a selection is to be made. For Existing Valves 1. Process fluid 2. Process fluid temperature 1. Refer to the valve bulletin for ordering information. 3. Maximum valve inlet pressures 4. Maximum valve pressure drops 2. Also refer to the specifications. Review the information under...

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