Emerson 788 DVC manual Closed Position

D E C 2012 DANIELTM MODEL 788DVC DIGITAL CONTROL VALVES

CLOSED POSITION -

The normally closed solenoid is closed. The normally open solenoid is open. Y-port (P3) to Z-port (P2) is closed. X-port (P1) and Y-port (P3) pressures are balanced. The main valve spring being the differential force, closes the piston and keeps it seated.

Figure 2-1. Closed Position

2-2 THEORY OF OPERATION