Instruction Manual
D104016X012
8590 Valve
June 2017
6
Lifting Guidelines
Threaded holes for lifting are standard on the NPS 6 - 24 valve bodies. It is required that swivel hoists rings be used to
lift the valve or valve and actuator assembly. An eyebolt cannot accommodate all lifting angles required to install or
maintain the valve. The load carrying capability of an eyebolt decreases dramatically if used in any other orientation
than axially. Therefore, the use of eyebolts is not permitted.
CAUTION
Care must be taken when lifting the valve/actuator assembly to ensure the accessories and tubing are not damaged in the
process. The valve weight is listed in table 2. For the actuator weight, refer to the appropriate instruction manual. Make
sure to use appropriate lifting straps/hoists capable of lifting this combined weight.
WARNING
Avoid personal injury or property damage caused by uncontrolled movement or dropping of the valve assembly.
Ensure the disk is secure from rotating during lifting process. Failure to do so could result in personal injury if the disk
rotates uncontrolled during lifting.
Swivel Hoist rings are sized to lift only the valve and actuator. Do not attach piping or other structures to the valve and
actuator assembly when lifting with swivel hoists rings.
Take appropriate precautions to avoid unbalanced loading which may result in sudden swinging or movement of the
assembled unit, including additional lifting and/or support methods when necessary.
Do not use eyebolts when lifting the valve or valve and actuator assembly due to variable loading angles inherent to valve
maintenance and installation.
Failure to utilize safe lifting practices may result in equipment damage and/or personal injury.
Lifting Valve/Actuator Assembly
To lift the assembly, install swivel hoist rings into one or two of the threaded holes on the valve body (see figure 3.
Thread sizes are listed in table 5. When lifting the valve and actuator assembly, a strap around the actuator may be
required to ensure lifting stability. If straps are used on the actuator, ensure the lifting location is above the center of
gravity (CG) for the actuator to prevent load shifting during lifting. Refer to the appropriate assembly drawings for the
CG for your assembly.
Lifting Valve Only
To lift the valve, insert two swivel hoist rings into the body. Thread sizes are listed in table 5. Ensure the valve is closed
and that the packing is tightened to prevent shaft rotation during lifting. Without an actuator, the valve disk is free to
rotate if enough momentum is generated during the lifting process by a sudden stop. The packing and seal friction
should prevent the disk from rotating; however take proper precaution when lifting the valve.
7. Insert the valve between the flanges and install two or more line flange studs into the line flanges to help hold the
valve in position while centering the valve. Carefully center the valve on the flanges to ensure disk clearance.
Note
Lubricate line flange studs before inserting them into flanges. If necessary, provide additional support for the control valve
assembly because of its combined weight.
