Instruction Manual

Instruction Manual
D102136X012
KALREZ System - Sliding-Stem Valves
May 2011
2
Table 1. Specifications
Applicable Valve Designs
Fisher valves using CL125 through 600, J A,
J easy‐et valves (for example, EAT, EZ, ETR, EWD,
etc.), J EH, J HP, J YD, and J YS
(1)
Applications
Valve Stem Diameters: J 9.5, J 12.7, J 19.1,
J 25.4, and J 31.8 mm (3/8, 1/2, 3/4, 1, and 1‐1/4
inches)
Pressures and Temperatures
(2)
Maximum Application Temperature
KVSP 500 Series: 260_C (500_F)
KVSP Fire‐Safe Series: 260_C (500_F)
Maximum Application Pressure
For Environmental Service: 31 bar (450 psig)
For Non‐Environmental Service: Pressure is limited to
the maximum valve rating
Also see bulletin 59.1:062, Packing Selection
Guidelines for Sliding‐Stem Valves
1. For availability of a KALREZ packing system with a specific valve, contact your Emerson Process Management sales office.
2. The pressure/temperature limits in this manual, in the valve literature, and any applicable code or standard limitation, should not be exceeded.
Installation and Maintenance
Use these instructions to install KALREZ packing in valves that have standard packing or when inspecting or replacing
KALREZ packing.
WARNING
Avoid personal injury from sudden release of process pressure or uncontrolled movement of parts. Before performing any
installation or maintenance operations:
D Do not remove the actuator from the valve while the valve is still pressurized.
D Always wear protective gloves, clothing, and eyewear when performing any maintenance operations to avoid personal
injury.
D Disconnect any operating lines providing air pressure, electric power, or a control signal to the actuator. Be sure the
actuator cannot suddenly open or close the valve.
D Use bypass valves or completely shut off the process to isolate the valve from process pressure. Relieve process pressure
from both sides of the valve. Drain the process media from both sides of the valve.
D Vent the power actuator loading pressure and relieve any actuator spring precompression.
D Use lock‐out procedures to be sure that the above measures stay in effect while you work on the equipment.
D The valve packing box may contain process fluids that are pressurized, even when the valve has been removed from the
pipeline. Process fluids may spray out under pressure when removing the packing hardware or packing rings, or when
loosening the packing box pipe plug.
D Check with your process or safety engineer for any other hazards that may be present from exposure to process media.
If you are installing the packing system in a valve that is still connected to an actuator, remove the actuator from the
valve to provide sufficient space to install the packing assembly. If a spring‐return actuator is used, it is possible that
disconnecting the stem connector will allow the spring to force the actuator to the end of its travel. Be sure the
actuator spring is resting on its travel stop. Refer to the appropriate valve and actuator instruction manuals to remove
the actuator.
Carefully remove the old packing parts from the packing box by using the valve instruction manual procedures. Both
the valve stem surface condition and the packing bore are critical in obtaining a good seal. If the valve stem surface is