To install the unit in the field, it is assumed that a 1/2” FNPT collar exists on the
flowline adjacent to the actuator. A needle valve should be installed in the collar in
order to isolate the sensing manifold bar for testing purposes. The control system is in
turn mounted directly on the needle valve via the 1/2” NPT in the bottom of the
manifold bar (see picture).
Supply pressure to power the system and the actuator is connected to the tee located on the inlet of the regulator. The last connection to be made is the connection from the outlet port of the Manual Reset Relay to the actuator.