WOW.. service as it should be!! Received two new gas stop valves and after installing I was not getting any readings. Contacted Gas stop and got in touch with Mike. On the first call Mike quickly figured out the issue and sent missing O-rings for the valves. Received the o-rings quickly through the mail, reinstalled valves and they work like they should. Now my wife has peace with the safety gas stop provides. A big thanks to Mike and team. I would definitely recommend gas stop to everyone looking to add safety to their setup. This issue has been resolved, quickly, effectively and in a timely matter. Thanks again stop gas. Lloyd