Pop (you might call it soda), particularly coca-cola and pepsi, is excellent for beating a clog it's arguably better than commercial chemical clog remover! Keep your home energy systems in top condition. We used kil block on the bathroom waste the result was amazinggreat product great value ! Is a registered company in england. I would have thought if the continuity checks out on the gas valve, the engineer then tested the pcb? Anytime plumbing offers emergency plumbing services in santa cruz county.