Brooks noticed that the MDV and ACX product lines, associated parts and accessories have been discontinued. Brooks began end of life communications for these product lines in November of 2012.
Acmewin has a total solution in place to ensure on-going service and repair support for MDV and ACX1201 products. Acmewin can support MDV and ACX alternative products  and repair service immediately. If you have any need for these Brooks product please feel free to contact us.
The alternative parts of below items are now available.
Mattson P/N 467-02643-00   RGLTR,PRESS CONT,ACX120103
Mattson P/N 467-16763-00   RGLTR,PRESS CONT,ACX120113

Mattson P/N 914-11001-00  Throttle valve, MDV-018