Vent Hole Sump Pump Discharge Pipe

It s to prevent air lock when the pump can overpump the pit leaving air in the impeller chamber before leading to the next cycle.

Vent hole sump pump discharge pipe.

Drill a hole in your basin. The hole should be drilled downward at a 45 degree angle pointing away from your pump but inside your pump pit. Your weep hole should be drilled between the discharge and check valve. Use pvc cement to secure the valve in place with a watertight seal.

Make sure to disconnect your pump from the lines and place it in a place that is easy to drill. On the upper end of this install a check valve. As long as your property has a downward slope from the point of discharge to the end of the pipe location it can be any length that you want subject to engineering requirements for size and drain capacities etc. The vent hole allows excess air to escape from the pipe preventing air bounding.

Start at the vent and run pvc pipe to the pump pit accounting for curves bends and interior walls. This piece of pipe should extend up and out of the sump pit. Measure your pump and vent system. Joe pa you could drill a small hole 1 8 to 3 16 at the top of the elbow that turns to the ground outside of the house this will give you an air vent.

This valve will allow water to pass out of the sump pit but will prevent it from flowing back when the pump is turned off. You could also place a t y in the line and reduce the top leg to 1 2 and extend a pipe up a foot that would vent the line. The hole is 3 16 not 1 8 and it is supposed to be drilled within 6 of the discharge port of the pump. Again in our area freezing becomes a big consideration.

Get your tools parts and pvc pipe. Step by step vent guide. I have done this and no water escapes. How long can a sump pump discharge pipe be.

Often it s best to run the vent pipe directly upwards to the underneath side of the main floor and then run it between joists to reach the vent system. Vent for sump pump discharge.