Thanks.  I didn't know about that source.
Edward

At 08:55 PM 9/10/2012, you wrote:
>I bought the adapter here and had a local Ace hardware attach a
>length of hose and the fitting for the bbq tank on the other
>end.  Someone had posted a picture of it, so I figured it would
>work.  Glad to hear it will. Dave
>http://www.propanewarehouse.com/acmefittings.asp
>________________________________ From: Edward Maglott
><emaglott3@GMAIL.COM> To: vanagon@GERRY.VANAGON.COM Sent: Monday,
>September 10, 2012 6:27 PM Subject: Re: Propane tank fill valve   I
>have had a lot of trouble finding a female 1  3/4"  acme thread
>fitting or adapter.  Do show your setup and let us know if you have
>a source for that adapter. Mike, As you q suspected, I'm not trying
>to fill the westy tank with liquid propane, just basically let the
>gas flow through it or fill it with propane gas at the pressure of
>my external tank. Edward At 03:58 PM 9/10/2012, Bill M
>wrote: >Edward >I use a female acme thread to female POL adapter. I
>screw it >onto my fill valve and them with a male POL to male
>POL >can hook a barbecue tank up to Westy. No extenda stay needed.
>What >happens is the higher pressure of the barbecue tank (20lb)
>over >comes the low pressure in my Westy tank. I used the extra tank
>all >last year for my >propex and still have not gotten it filled. I
>did manage to >fill it once using the tank made for a fork lift and
>some >adapters but it was really dangerous. >I was selling the
>adapters for the fill valve. I may have one >more if I dig around. I
>will post a picture of my hose/adapter >later. You should be able to
>have your local propane rv dealer make >one up for under 50.00 > >Bill