actually Tx Bill, if you hook it all up and then turn on the water [1/4 turn], you've got "air over hydraulic"

and I'd be sure that folks using original valves from years when the cooling system was zero pressure, on systems that have been modified to 15# don't have valves blowing up
ohwell works for me ohwell

64fleetside - there was a lot of grief in town when they "upgraded" the water system - some folks didn't pay any attention to the warning that regulators should be installed, blew out old water heaters among other things, but my place was plumbed by me with a 1" feedline for commercial, no problems here with 70#, and great for the apple processing biz grin
and Stoo, the hose tap in front of my house is before the regulator eek

Bill


Moved over to the Passing Lane

"When we tug a single thing in nature, we find it attached to the rest of the world" ~ John Muir
"When we tug a single thing on an old truck, we find it falls off" ~ me
Some TF series details & TF heater pics