Instruction Manual

Instruction Manual
D103435X012
V150E Valve
April 2012
7
drive shaft or packing box wall; scratching these surfaces could cause leakage. Clean all accessible metal parts and
surfaces to remove particles that would prevent the packing from sealing.
Assembly
If the valve is equipped with the ENVIRO-SEAL packing system, refer to the ENVIRO-SEAL Packing System for Rotary
Valves instruction manual, D101643X012, for assembly.
1. To help ensure correct centering of the Vee-ball (key 2) ontheseal(key11),makesuretheballisclosedwhileyou
install or tighten new packing. Insert a screwdriver, pry bar, or similar tool between the lower ear of the ball and the
valvebody.Usetheprytomovetheballtightlyagainstthebearingontheactuatorsideofthevalve(seefigure4).
Keep the ball in that position until you have completed packing installation and adjustment.
2. Install the new packing parts using the parts sequence shown in figure 3. Install the packing follower (key 17).
3. Secure the packing follower with the packing follower nuts (key 20). Tighten the nuts far enough to stop leakage
under operating conditions.
Note
If the valve is equipped with a bonding strap assembly (figure 2), re-install the assembly.
4. Reconnect the actuator and lever in accordance with the orientations that were noted in step 3 of the disassembly
procedures. If necessary, use figure 9toidentifythecorrectindexmarks.
5. Refer to the appropriate actuator instruction manual to complete actuator assembly and adjustment.
6. Whenthecontrolvalveisinoperation,checkthepackingfollowerforleakageandretightenthepackingfollower
nuts (key 20) as necessary.
Replacing the HD Ball Seal
Perform this procedure if the control valve is not shutting offproperlyorifsealinspectionorreplacementisnecessary.
The valve / actuator assembly must be removed from the pipeline and the actuator must be removed from the valve to
replace t he ball seal. Key numbers are shown in figure 13 unless otherwise indicated. Ball Seal assembly details (with
key n umbers) are also shown in figure 5.
WARNING
Perform the steps in the WARNING at the beginning of the Maintenance section of this manual.
Removing the HD seal
1. Remove line bolting, remove the control valve from the pipeline, remove the actuator (as discussed in the packing
section), and place the valve body on a flat work surface.
a. For NPS 3x4 and 4x6 valves, the ball must be removed to access the seal. See the Bearing and Ball Maintenance
Disassembly section on page 12 in this m anual. Then return to this procedure and continue with the next steps.