Fisher RPACK kits are essential for maintaining the stem seal integrity of globe and rotary valves. These kits provide a comprehensive solution for packing replacement, ensuring low friction and long-term leak prevention. Understanding the differences between specific part numbers like RPACKX00012 and RPACKX00062 is critical for matching the packing material to the process temperature and pressure.
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01 Comparison of Fisher RPACK Part Numbers
The following table outlines common original factory packing kits used in Fisher control valves.
| Part Number | Typical Material | Application Temperature Range | Common Valve Series |
| RPACKX00012 | PTFE (Teflon) V-Ring | -40 to 232 ℃ | Fisher ET, ED, ES |
| RPACKX00022 | PTFE (Teflon) V-Ring | -40 to 232 ℃ | Fisher EZ, ET (Stem Size dependent) |
| RPACKX00032 | Graphite / PTFE | High Temperature | Fisher High-Temp Globe Valves |
| RPACKX00052 | Graphite Filament | Up to 649 ℃ | Severe Service / Steam |
| RPACKX00062 | ENVIRO-SEAL PTFE | Low Emission Service | Fisher Control Valves (Fugitive Emission) |
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02 Technical Characteristics of Packing Materials
The selection of a Fisher packing kit depends on the specific chemical compatibility and environmental regulations of the site.
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PTFE V-Ring (RPACKX00012 / RPACKX00022): These kits utilize a pressure-assisted V-shape design. They offer exceptionally low friction and excellent chemical resistance, making them ideal for standard process applications.
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Graphite Kits (RPACKX00052): Graphite is used for high-temperature and high-pressure steam service where PTFE would melt. These kits provide a durable seal but may require higher packing nut torque to achieve the desired seal.
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ENVIRO-SEAL Systems (RPACKX00062): This premium packing system is designed to meet strict fugitive emission standards. It features live-loading technology that maintains constant pressure on the packing to prevent leaks over thousands of cycles.
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03 Maintenance Best Practices
When installing original Fisher packing kits, technicians should adhere to the following procedures to ensure performance:
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Inspect the valve stem for scratches or pitting before installation, as a damaged stem will quickly wear out new packing.
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Ensure the packing box is thoroughly cleaned of old material to prevent contamination of the new seal.
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Use a calibrated torque wrench to tighten the packing flange nuts to the factory-specified torque levels.
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Lubricate the packing and stem only with materials compatible with the process fluid.
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04 Procurement and Technical Verification
Ordering the correct RPACK kit requires verification of the valve stem diameter and the specific serial number of the valve body. Xi’an Yunrui Trading Co., Ltd. (Yunrui) assists industrial users in procuring genuine Fisher RPACK components.
Technical support includes identifying the correct kit for specialized trims like Whisper Trim or Cavitrol. By maintaining a consistent supply of RPACKX00012, RPACKX00022, and other common kits in the Xi’an warehouse, we minimize downtime during planned outages. Global logistics services manage the necessary documentation for international shipping, ensuring that critical maintenance parts arrive on schedule for power and chemical plant turnarounds.
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