http://www.lvrj.com/news/cold-snap-brings-plumbing-issues-to-las-vegas-valley-187015971.html

Five years ago when temperature in Las Vegas went below 20's, our Pressure Vacuum Breakers went to pieces, we spent $160.00 including labor.

Yesterday went out looking for things and stuffs to warm up the pipe and the PVB, Home Depot managers did not know what I was talking about. The store clerk was so nice to try to understand what we wanted to buy - she asked about 3 other co-workers all of them said there is no such thing.

A husband and wife behind over heard and understood what we mean - aah you need to buy "Heat Tape go to Grainger". The clerk then printed thru Mapquest the direction to the store.

We went to the store in Western Avenue - Quincy who just moved in from Alaska was dumbfounded "it is 47 degrees in Alaska now". After he found what we wanted he told us that he never heard and did not know that there is such a thing as - Raychem Gardian 120 V Pressembled Self-Regulating Heating Cable.

Simple to install just coil them round and round around the pipe and the Pressure Vacuum Breakers, connect the outlet to the outdoor electrical outlet and that's it. After few minutes the pipe and the Raychem cable was warm - like lukewarm water. Double check about 3 hours the self regulating heating cable really is working.

One of the clerk at the Grainger's pressure vacuum breakers broke to pieces last night with the frigid temperature. He is from Wisconsin
both moved to Las Vegas in the last quater of 2012.

There is always something to learn everyday.