DeZURIK
RCV Rotary Control Valves
June 2017
Page 7
D10361
Replacing Packing
See Figure 1 and Figure 2 for parts identification.
Pipeline pressure can cause personal injury or equipment damage. Relieve the
pressure in the pipeline before removing the packing gland.
1.
Discontinue flow and relieve pipeline pressure.
Accidental operation of powered actuator can cause personal injury or equipment
damage. Disconnect and lock out power to actuator before servicing.
2. If the actuator is powered, disconnect and lock out the power to the actuator.
3. Remove the actuator from the valve as described in the Actuator Instructions.
4. Remove the adaptor screws (A27) and the adaptor (P2) from the body (A1).
5. Remove the gland nuts (A8) and the gland (A9) from the body.
6. Remove the used packing rings (A10) from the packing chamber in the body.
7. Place the new packing rings (A10) onto the upper shaft (A6), and slide rings into position in the
packing chamber.
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).
8. Place the gland (A9) in position over the upper shaft (A6) and packing rings (A10), and replace the
gland nuts (A8). Tighten the gland nuts finger tight, plus 1/2 turn.
9. Mount the adaptor (P2) on the body (A1) with screws (A27). See Table A for mounting screw
torques:
Table A: Torques for Mounting Screws
Valve Size
Torque
in
mm
ft lbs
Nm
1 - 2
25 - 50
12 ±2
16 ±2
2½" - 4
60 - 100
12 ±2
16 ±2
6 & 8
150 & 200
40 ±3
54 ±4
10 & 12
250 & 300
80 ±5
108 ±7
10. Mount the actuator on the valve as described in the Actuator Instructions.
11. Install the valve in the pipeline as described in the
Installing Valve
section.
12. The pipeline may now be pressurized. If packing leakage occurs, tighten the gland nuts (A8) evenly
and slowly — just enough to stop the leakage.
