Cartridge Valve Insert
Function F20 - 1:2 ratio with flow restrictor
The F15 insert (1:1.5) and F20 insert (1:2) are the flow control functions with longer skirt and longer notch, hence more notch engagement enabling flow metering over larger stroke.
The adjustable poppet lift limiter restricts flow from A to B. The check function prevents flow from B to A. The X pilot port of the cover is connected to the B port of the insert.
Stroke limiters are available with an ISO 4401, size 03 (ANSI/ B93.7M-D03) interface for mounting a single-solenoid controlled DG4V-3(S) pilot valve. These type A3 covers are supplied configured for a “normally open” function, i.e. the insert poppet is vented when the solenoid of the pilot valve is de-energized (with pilot pressure applied to port X).
The opposite, “normally closed” (NC) function, can be obtained by interchanging the orifice and plug in ports AP1/AP2. With this arrangement, the insert poppet is “normally closed” (NC) and is open when the solenoid of the pilot valve is energized (with pilot pressure applied to port X).