Davies Metcalfe FV3 vacuum brake valve

[aussiesteve]

G'day,

I am wondering if anybody might have any information concerning the Davies Metcalfe FV3 vacuum brake valve.

This brake valve was utilized on the WAGR X class diesel locos built by Metro Vickers.

The valve handle is aligned vertically for running position.

And, pushed forward for Quick Release to activate the loco vacuum pipe exhausters.

Pulled backwards for brake application.

I am intrigued by this brake valve.

I have only experienced the vacuum system briefly during a visit to West Oz in 1989.

I got to play with a WAGR Y class diesel.

That vacuum brake valve was different to the FV3 utilized on the X class.

Steve.