*PLUMBERSSTOCK EXPERT* responded:
Thank you for asking about the Mueller 1-1/4" Stop & Waste Valve! The stop and waste valve can be used to drain the water from your house to prevent frozen pipes. The valve drains the water out of the piping but it does not keep the water inside. If you have a sprinkler system, the stop valve allows the water to come through your sprinkler supply line when turned on. When turned off, the stop and waste valve has a drain port to drain the water out of the supply sprinkler lines. Should you have further questions, please ask away! To start placing an order, just click Add To Cart and fill in the required fields. Thank you for visiting Plumbersstock.com. Have a great day!