The issue they were having was a leaking faucet over a mop sink in the kitchen of a restaurant. This particular Faucet has two unions that connect the faucet to a nipple inside the wall. After diagnosing where the leak was coming from I could tell that both unions were loose and this is why the leak was happening on the hot side and cold side. So I used a back up ranch to hold the main on Union and tighten down faucet on both sides. Customer seem to be happy and satisfied with the job perform.