Winston wrote:
David Billington wrote:
Winston wrote:
Bob La Londe wrote:
I was over at a buddy's house the other day, and he asked me if I
wanted
an air drier. Nothing special. Just a 3 foot long dessicant filled
pipe
style with a drain at the bottom. When I asked him what he wanted
for it
he put it in my car. Said he got two of them for next to nothing a
while
back, and he only needed one.

Nifty!
What will the plumbing look like?
A valve on the bottom to flush the liquid
through an orifice, driven by a timer?

Or something?

I would expect something of that sort as a mate used to design truck air
brake components and desiccant air driers were in the product line. The
system would have a small air receiver to hold enough air to purge the
desiccant and it would be controlled on a timer to remove excess
moisture cyclically. The desiccant would eventually need to be replaced
but the desiccant can on the one I have is like a large oil filter and
screws on and off.

Interesting. Thanks!

--Winston
Thinking about it a bit more the truck system is safety critical so that
extra complexity is justified, in a shop air system where it's not used
frequently just occasionally blowing down the desiccant manually with
air direct from the receiver may be all that is required to keep the
desiccant in good order to dry the air. By the sound of the brief
description of the drier by the OP it may be intended to be that simple,
I would expect the air to flow over the desiccant and have the drain at
the bottom.