Non-return valve Brake Booster

can these things be taken apart and fixed? what is the alternative? im talking about the servo vac. line

Servo non-return valves

The Girling MK 2A unit is pressed alloy and really not serviceable. I've washed them out with air & carb cleaner, and sometimes got lucky. Most have enough corrosion that the air moves both ways, or worse, no way at all. I've got several good used in the servo stocks if yours won't free up. There's two NOS in the safe for those "special" restoration clients. Keep em' runnin', randy

If originality is not a pressing issue I have used a late 80's to 90's Toyota pickup truck check valve. It is easily installed in the vacuum line not real obvious and you can still use the non-operating valve on the booster if it will flow vacuum.
Beamin Dave

I pushed out the plastic piece and am going to do just that. Ill put a check valve off the intake, behind the carb. Then i can use the banjo fitting. Thanks for your input