Selection Guide

Valve and Actuator Selection Procedure

1. Determine the required flow coefficient (Cv/kvs).

Using the required flow and pressure drop for the application (consult CA28, F-13755 if necessary), determine the required flow

coefficient.

2. Determine valve body part number.

Select a two-way valve body from Table-1 or a three-way mixing or diverting valve body from Table-2 having the required flow

coefficient, size, body pattern, end connection, and temperature/pressure ratings appropriate for the application.

3. Select the Forta Actuator

Using the required close-off pressure for the application, consult Table-5 and select a Forta actuator having sufficient close-off

pressure on the valve body selected in Step 2. Additional Forta actuator specifications may be found in Table-3 or in the Forta

Installation Instructions sheets shown in Applicable Literature.

4. Determine Assembly Part Number

If a complete valve and actuator assembly is required, consult Table-3 for the actuator code of the Forta actuator selected in

Step 3. For the complete assembly part number:

• Change the valve body part number prefix from VB to VU.

• Insert the actuator code in the third field of the part number.

• Confirm the availability of the factory assembly by consulting Table-6 (two-way valves), Table-7 (three-way mixing valves),

or Table-8 (three-way diverting valves).

Example:

• Valve body: VB-7213-0-4-4

• Actuator: M400A-VB (actuator code 674 from table 3)

• Complete assembly: VU-7213-674-4-4

Forta actuators are field configured for the desired control signal type and range plus the desired action. Consult the appropriate

Forta Installation Instructions for further information (see Applicable Literature, F-27599).