gplumb
Member
I have looked into using the Laing method of connection, but they are the only pump manufacturer that specifies the use of the air vent near the pump (before pump if connecting to drain and after pump if connected to cold inlet). They also want the pump mounted below the top of the tank. They seem more concerned about air in the line damaging the pump then the the other pump manufacturers. Does anyone follow the advice about mounting their pump or other manufacturer's pumps below the tank top. Does anyone install the air vent (Watts FV-4M1)? To install it an air scoop has to be built out of 1 1/4" pipe and a threaded fitting put on it. My plumber said it would cost around $50 just to build the air scoop. Is there an auto air vent that already has the scoop?