On Sun, 21 Jan 2007 16:42:37 GMT, "J.C." wrote:

We got a propane heater the other day. The installation instructions call
for a "ground union" between the incoming on/off valve and the heater
connection. What's a "ground union" and what happens if I don't use one?

JC



A google search turned up this discussion:
http://www.plbg.com/forum/read.php?1,276139

hth,

tom @ www.FreeCreditReportAdvice.com