What is the minimum connection required for a low water cut-off draw?

The minimum connection required for a low water cut-off draw is specified to be 3/4". This requirement ensures that the low water cut-off device can function effectively by allowing adequate flow of water. A connection of this size facilitates proper drainage and prevents the risk of sediment buildup, which could impair the operation of the cut-off mechanism.

Having a connection that is too small, such as 1/2", might not provide sufficient flow, compromising the effectiveness of the low water cut-off and potentially risking system safety. Conversely, larger connections, such as 1" or 2", while technically feasible, would not be necessary and could lead to unnecessary complexity and cost without any practical benefit for the low water cut-off function. Therefore, the 3/4" connection is both practical and meets safety standards established for these devices.