ENVIRO-SEAL System Sliding-Stem Valves
Instruction Manual Form 5306 December 1996
ENVIRO-SEAL Packing System for Sliding-Stem Valves Contents Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1 Scope of Manual . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 PACKING FLANGE
Installation
................................ 2 Tightening Procedures . . . . . . . . . . . . . . . . . . . . . . . . 5
Other Considerations . . . . . . . . . . . . . . . . . . . .
5
Parts Ordering . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5
Retrofit Kits
............................... 6 Design A, E, EH, HP, SC, YD, YS Retrofit Kits . . . 6 Design CE Retrofit Kits . . . . . . . . . . . . . . . . . . . . . . . 6 Design CP Retrofit Kits . . . . . . . . . . . . . . . . . . . . . . . 6 Design GL Retrofit Kits . . . . . . . . . . . . . . . . . . . . . . . 7
PACKING FOLLOWER
VALVE STEM
BELLEVILLE SRINGS
VALVE BONNET
W5814–1* / IL
Figure 1. easy-e Valve Bonnet with ENVIRO-SEAL Packing
Repair Kits
Introduction Scope of Manual This instruction manual includes installation and parts information for ENVIRO-SEAL live-loaded packing systems (see figure 1). These systems are available for Fisher Controls sliding-stem valves with 3/8, 1/2, 3/4, 1, and 1-1/4 -inch (9.5, 12.7, 19.1, 25.4, and 31.8 mm) diameter stems. The system can be used with many sliding-stem valve as shown in the Applications section of the Specifications. Refer to appropriate valve and actuator instruction manuals for necessary information relating to the disassembly and assembly of the valve and actuator. ENVIRO-SEAL packing systems, for sliding-stem valves, utilize a Belleville These products may be covered by one or more of the following patents: 5,129,625; 5,131,666; 5,056,757; 5,230,498; and 5,299,812 or under pending patents. easy-e, ENVIRO-SEAL, HIGH-SEAL, Fisher, Fisher-Rosemount, and Managing The Process Better are marks owned by Fisher Controls International, Inc. or Fisher-Rosemount Systems, Inc. KALREZ is a mark owned by E.I. du Pont De Nemours Co. All other marks are the property of their respective owners. Fisher Controls International, Inc. 1991, 1996; All Rights Reserved
(coned-disk) spring system in the pressure/temperature ranges shown in the specifications. For higher pressure/temperature ratings, refer to the HIGH-SEAL Live-Loaded Packing System instruction manual, form 5263.
Description Fisher Controls offers packing systems with exceptional sealing capabilities that easily install in your existing valves or that you can purchase with new valves. These systems help seal your process to conserve valuable fluids, and to protect the environment against the emission of toxic or polluting liquids and gases. The external live-loading provides a constant load over the life of the packing material, which reduces your need for packing box adjustment and maintenance. If the piping and valve are insulated, do not allow insulation to extend above the yoke boss surface, covering the ENVIRO-SEAL packing arrangement. Keep the ENVIRO-SEAL packing arrangement exposed to ambient air conditions. D101642X012
................................ 7 Design A, E, EH, HP, SC, YD, YS Repair Kits . . . 7 Design CE Repair Kits . . . . . . . . . . . . . . . . . . . . . . . . 8 Design CP Repair Kits . . . . . . . . . . . . . . . . . . . . . . . . 8 Design GL Repair Kits . . . . . . . . . . . . . . . . . . . . . . . . 8 Packing Stud and Nut (2 each required) . . . . . . . . . 8