Assembly; Body; Plug - Emerson Fisher Multiport Flow Selector Instruction Manual

Multiport Flow Selector
January 2019
Note
The bonnet can be removed with the Multiport Electric Actuator still attached. If this is done, ensure proper orientation has been
maintained between the actuator and valve body once the bonnet has been re-installed onto the valve body. If this orientation has
not been maintained, recalibration of the actuator is required. One way to ensure proper orientation has been maintained is to
place alignment marks between the plug (key 2) and coupler (key 47) prior to removal of the bonnet (key 19).
1. Rotate the plug (key 2) to any unused inlet port. Remove the blind flange from this inlet port to gain access to the
seal assembly. Once the adjustment tool has been secured to the seal adjuster (key 18), rotate this tool clockwise
until it stops. This action unloads the wave springs (key 11, 17) and removes the forces generated between the seal
insert (key 12), valve body (key 1) and scraper (key 12)/valve body (key 1).
2. Remove the nuts (key 32) from the bonnet (key 19), lifting lugs (key 33), and the studs (key 31) from the body (key
31). Thread eye bolts into the jack screws holes provided in the bonnet. Raise the bonnet vertically until it clears the
plug (key 2) and move it to the side.
3. Remove the plug (key 2) from the valve body (key 1). The seal components should still be installed inside of the

plug.

4. Remove the seal assembly from the plug (key 2) using the adjustment tool as follows:
D Once the adjustment tool has been inserted into the seal adjuster (key 18) and secured, rotate the tool
counterclockwise until the seal adjuster disengages from the final thread on the plug.
D With the adjustment tool still secured to the seal adjuster (key 18), pull it out of the plug. All components that
make up the seal assembly are now outside of the plug.
5. Carefully remove the bearing cup (key 3) from the bonnet (key 19).
6. Inspect all components for damage. Replace any damaged parts and reassemble by following the Assembly
procedure in this manual.

Assembly

Refer to figures 2 and 3 when assembling the Multiport Flow Selector.
Ensure all parts are clean and in good condition before assembling the Multiport Flow Selector. Refer to figure 2 to
determine which components require lubrication.
Body (Key 1)
1. Visually inspect all internal and external surfaces and threads.
2. Install the plug bushing (key 9) into the lower section of the body.
Plug (Key 2)
1. Install the lower plug O-ring (key 8), with the correct number of backup rings (key 7). For ASME rated CL150, 300,
600, and 900 valves, install one backup ring above (on the side nearest to the bonnet) the O-ring. For CL1500 and
2500 rated Multiports, install two backup rings one on either side of the lower plug O-ring.
2. Lubricate and install the seal adjuster (key 18) by turning it clockwise (i.e. viewing toward the plug centerline) until
solid. Follow with the correct number of wave springs (key 17). For NPS 2x4, 3x6, and 6x16 constructions, install
three wave springs. For NPS 4x8 and 4x10 constructions, install four wave springs. Ensure the wave springs are
properly aligned and seated on the seal adjuster.
Note
If the wave springs are not properly aligned and seated then the seal assembly may not function properly.
8
Instruction Manual
D104239X012