DeZURIK
RCV Rotary Control Valves
June 2017
Page 13
D10361
Valve Reassembly
(Continued)
13. Position the plug in the valve body so it is centered in the valve flow-way.
NOTE:
The plug will be positioned at an angle in the body
.
14. Place the seat (A16) into the bore of the body (A1) with the beveled side of the seat toward the plug.
15. Rotate the plug (A2) toward the open position, then rotate the plug back toward the closed
position until it just makes contact with the complete circumference of the seat. Do not rotate
valve shaft any farther once the plug touches the seat circumference.
16. Note position of the shaft square in relation to body flange face.
a. The shaft square should be parallel with valve flange face as shown in Figure 5A
(Preferred for all actuators), or angled slightly as shown in Figure 5B (All actuators
except Reverse acting (spring-to-close) Diaphragm actuators) or: Figure 5C (Reverse
acting (spring-to-close) Diaphragm actuators only).
b. If the valve shaft square is not oriented as in Figure 5A or 5B, remove the shaft
from the plug spline, rotate the shaft until the correct position is achieved, then
insert the shaft spline into the splined hole in the plug.
NOTE:
If Graphoil Packing Option G2 (A10) is used, lubricate the inside and outside diameters of
each packing ring with Krytox 240 AC lubricant (1068502).
Figure 5 – Shaft Square Must Be Parallel with Valve Flange Face or Angled Slightly As
Directed.
