I've got a question. First of all I dont do irrigation work. I had one particular client, a good friend of mine who also owns 2 stores we maintain. I could not get my irrigation man off his ass to get this blow out done and the night time temp was forecast to be 10 degrees. I went to the clients house and was going to drain down the inside plumbing and the irrigation guy was going to be there for a blow out the following day. The drain his plumber put in was a copper stub with a plug. It took all I had with 2 cresent wrenches to break this plug loose and i think I twisted the copper a little. Is this a goofball drain? Every other inside drain I've ever seen has been a gate valve, including to one at my house. Give me your thoughts, Thanks in advance.