Opening up Differential Pressure Regulator

[Marc Boucher]

Can the DPR be opened up for cleaning?  By 'opened up' I mean more than simply removing from the fuel distributor and spraying carb cleaner or forced air into it.

Its off the car, and I can't get anything inside it (like a small hose) to perform a good test to confirm if its clogged.  I think it may be.  But its seems to be as sealed a "black box" as I've seen.  Its got one screw in addition to the two that hold it on the car but that screw doesn't seem to hold it together in any way.  It looks like it was manufactured as a single unit.