Duo Art Expression Box

2. Accordian pneumatic valve box

This is the standard valve box found in almost every Duo Art.  This is before.  All metal is dirty and there was marking on the box before we painted it.  It is dismantled and sanded on all four sides.  One side has the bleeds and is open for access to the pouches and valve feet.

Open the pouch chamber and see the valve feet and pouches.   One valve foot  and valve is removed.

Dismantling of the valve block and crash valve.  Pouch board has been sanded for sealing pouch wells and replacing of the pouches.  The valves will also be refaced.

This unit had problems with number 1 accordian and when I opened it up I found out why.  There was a large wad of red fuzz from the breather felt that had been sucked in.  It may have been that way from the factory as no work was ever done on this box before me.

New leather facings are cut and installed.  The bottom valve is glued and the top one is put in without glue.  There is meticulous regulation of valve travel by way of depth gauge micrometer and the top valve will have spacer papers under it to regulate it.  The red ring is a fiber donut that holds the top valve seat down. 

The reassembled and sealed box is painted black like the factory did.

Once reassembled, regulated, painted, tested and new breather felt is installed, all the nipples and tubing is returned and sealed with plastic glue.

3. Crash valve before.  Since it has the same valve and pouch as the 8 valve box, they are done together.

4. Expression Box and regulators  NEXT PAGE

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