Hot Tapping (https://en.wikipedia.org/wiki/Hot_tapping https://en.wikipedia.org/wiki/Hot_tapping) is actually really easy on poly line - and given the non-hazar

Hot Tapping (https://en.wikipedia.org/wiki/Hot_tapping https://en.wikipedia.org/wiki/Hot_tapping) is actually really easy on poly line - and given the non-hazardous nature of beer I'm guessing they have little to no flow control on the line either. It sounds like the line runs under public cobble streets though so that'd be pretty tough to pull off. The usual hot tap for this sort would be just a steel saddle with a pointed nipple on the inside that's applied with a few U-bolts or similar - certainly something in the range of a backyard shop or garage tinkerer. The amount of these on gas & gasoline lines in rural areas is actually pretty surprising, and they usually aren't picked up unless there's an incident or they cause a dip in corrosion potentials. Most flow control / leak detection systems won't catch under a 1% difference.