Novex, Phoenix Iii And/Or Phoenix Iii Fire-Tested Seals - Emerson Fisher Control-Disk NPS 14 CL150 Instruction Manual

Instruction Manual
D103545X012
Figure 8. Typical Seal Installation
3. Carefully tuck the O‐ring downward into the body T‐slot until the seal ring is completely entrapped in the body
T‐slot, and it completely covers the backup O‐ring.
4. Re‐install the retaining ring and the socket head cap screws. Tighten the cap screws just enough to eliminate any
movement of the retaining ring. Do not over‐tighten the retaining ring screws. Using a blunt‐end tool, carefully
tuck the lip of the seal ring under the retaining ring.
5. When the seal is under the lip of the retaining ring, continue to tighten the cap screws according to standard
procedures. Do not fully torque the screws at this time. Final tightening of the screws is accomplished in step 7 of
this procedure.
6. Manually rotate the upper shaft clockwise 180 degrees to return the disk (key 2) to its closed position.
7. The final seating of the retaining ring cap screws can now be done. For the screw torque values, refer to table 6. The
seal is now fully installed. Refer to the Installation procedures in this manual.
NOVEX, Phoenix III and/or Phoenix III Fire‐Tested Seals
1. Locate the replacement seal ring (key 5) and note the shape of the ring. The ring is wider across one edge diameter
and narrower across the other edge diameter as shown in figure 8. Around the outside circumference is one wide
groove.
Install the seal ring (key 5) in the valve body by first placing the wider outside diameter of the seal ring into the T‐slot
area of the valve body which is shown in figure 2.
The backup O‐ring (key 6) for the Phoenix III seal will have to be installed after placement of the seal ring in the valve
body using a blunt‐end screwdriver or the seal installation tool in the maintenance kit. Do not use the screwdriver or
seal tool directly on the metal seat. Use tools on the O‐ring only.
A5251‐1*
Control-Disk NPS 14-36
April 2011
15