Installation Instructions System 9000 Actuator Retrofit for Valtek Mark One Valves
System 9000 Actuator Retrofit You can retrofit a System 9000 actuator (size 20) to mount on a Valtek Mark One valve by replacing the standard yoke, stem connector, and jam nut with the parts listed in this Installation Instructions sheet. Follow the installation procedures outlined in this instruction sheet and the System 9000 instruction manual, Form 5408.
POINT ’A’ O-RING LOCATION
WARNING
Disconnect any operating lines providing air pressure, electric power, or a control signal to the actuator. Be sure the actuator cannot suddenly open or close the valve. Use bypass valves or completely shut off the process to isolate the valve from process pressure. Relieve process pressure from both sides of the valve. Drain the process media from both sides of the valve. Vent the pneumatic actuator loading pressure. Use lock-out procedures to be sure that the above measures stay in effect while you work on the equipment. If a 4-20 mA current source is not available to control the FIELDVUE controller, you can perform the following procedure by removing the digital valve controller and actuator cover. Then connect a regulated air supply to the 1/8-inch NPT actuator port for FIELDVUE controllers (see figure 1).
W6510*A/IL
1/8 INCH NPT PORT FOR FIELDVUE CONTROLLER
Figure 1. FIELDVUE Controller Point of Connection
Installation Refer to the System 9000 instruction manual, Form 5408, for additional or supporting information. The following steps describe how to install the System 9000 actuator onto a Valtek Mark One valve. 1. Refer to steps 1 to 3 in the System 9000 instruction manual, Form 5408 in the section entitled Changing Actuator Action to remove the cover and FIELDVUE positioner. 2. Place the standard Mark One split rings onto the bonnet. 3. Place the System 9000 yoke over the split rings. 4. Position the yoke clamps and bolts onto the bonnet, so that the bolts can be accessed through the yoke windows.
If a 4-20 mA current source is available, you can use the FIELDVUE controller to stroke the actuator for the following procedure. In this case, you will not need to remove the cover or FIELDVUE controller, given the unit is already set up for the desired valve travel.
5. Tighten the bolts in the yoke clamps per Mark One requirements.
Travel can be checked by measuring the travel stop projection past the proper surface for the desired fail direction. Distances and surfaces are shown in the System 9000 instruction manual, Form 5408.
7. Spin the jam nut all the way down on the stem.
6. Install the gland flange and proper bolting, tightened per Mark One requirements.
8. Spin the stem connector (with the boss facing down) all the way down on the stem. See figure 2.
FIELDVUE, FloVue, Fisher, Fisher-Rosemount, and Managing The Process Better are marks owned by Fisher Controls International, Inc. or Fisher-Rosemount Systems, Inc. All other marks are the property of their respective owners. Fisher Controls International, Inc. 1997; All Rights Reserved
D300918X012 09/97
Avoid personal injury or property damage from sudden release of process pressure or bursting of parts. Before performing any maintenance operations:
Installation Instructions System 9000 Actuator Retrofit for Valtek Mark One Valves Note DESIRED TRAVEL MEASUREMENT
The fail-open unit will already be against the travel stops prior to applying air pressure. 10. Stroke the actuator against the travel stops. 11. Stroke the actuator down the desired travel. 12. Spin the stem connector up until it touches the end of the canister and align the stem connector holes with holes in the end of the canister that are 90 degrees from the yoke windows (opposite the gland flange). 13. Install the stem connector bolts and washers and tighten as far as possible by hand.
YOKE
STEM CONNECTOR
DESIRED TRAVEL MEASUREMENT
JAM NUT GLAND FLANGE
YOKE CLAMP
SPLIT RINGS
14. If necessary, stroke the canister up and away from the valve to allow access to the stem connector bolts with an open end wrench. 15. Tighten the bolts until the stem connector is flush with the end of the canister and torque to 15 lbfSft. 16. Follow the procedure entitled FIELDVUER Instrument Installation in the System 9000 instruction manual, Form 5408.
A7033/IL
Figure 2. Actuator Assembly
Parts List 9. Mount the power module assembly to the yoke in the proper orientation and torque the bolts to 15 lbfSft.
2
Description Stem Connector Yoke Jam Nut Installation Instructions
Part Number 17B7321X012 37B7323X012 1A353735252 D300918X012