Instruction Manual

Instruction Manual
D103221X012
D3 FloPro Valve
February 2014
4
3. The control valve assembly may be installed in any orientation, but normally the actuator is vertical above the valve.
Installthevalvesotheflowdirectionarrowonthesideofthevalveindicatesthedirectionoftheprocessflow.
4. Install the valve following local and national piping codes when they apply to the application. For screwed
connections, treat the external pipe threads with a good grade pipe compound. For flanged connections, use
suitable gaskets between valve and pipeline flanges.
5. If continuous operation is required during inspection or maintenance, install a three-valve bypass around the
control valve assembly.
6. Connect loading pressure for the Spring-to-Close configuration to the lower casing assembly (key 21) as shown in
figure 7. The Spring-to-Open configuration loading pressure connection is in the upper casing assembly (key 32) as
showninfigure8.
Figure 2. FloPro Adjusts to Vary Flow Capacity (Shown with Valve Plug in Seated Position)
FULL CAPACITY SETTING (FACTORY SET)
15 mm (0.6 INCH) TRAVEL
REDUCED CAPACITY SETTING
10 mm (0.4 INCH) TRAVEL
CLOSED
50%
100%
CLOSED
50%
100%
Setting the Valve FloPro Flow Adjuster
The flow setting may only be adjusted if the 0.375 and 0.75 inch port sizes are installed.
When shipped from the factory, the actuator has the FloPro flow adjuster set at the maximum flow rate position for
the given port size.
Spring-to-Close Actuator Action
1. Ensurethevalveplugisintheseatedposition.
2. To change the valve flow rate, loosen the flow adjuster socket head cap screws (key 15), and reposition the flow
adjuster halves (key 13 and 14) to the desired flow rate position. See figure 2 for flow rate settings.
3. Retighten the socket head screws (key 15) to 3 NSm(26lbfSin).
Spring-to-Open Actuator Action
1. Attach a pressure line to the actuator. Pressurize the actuator to a maximum of 2.41 bar (35 psi) to seat the plug in
the seat ring.
2. To change the valve flow rate, loosen the flow adjuster socket head cap screws (key 15), and reposition the flow
adjuster halves (key 13 and 14) to the desired flow rate position. See figure 2 for flow rate settings.