Apr 16, 2021 · If a check valve is incorporated in the installation, a vent hole (approx. 3/16") must be drilled in the discharge pipe below the check valve and pit cover to purge the unit of trapped air. Trapped air is caused by agitation and/or a dry basin. Vent hole should be checked periodically for clogging.

If a check valve is used, we recommend drilling a vent hole in the discharge pipe. This hole is located in the basin between the pump and check valve, usually a few inches above the pump “on” level but below the pit cover. The vent hole will prevent air-locking from occurring.

a vent hole (approx. 3/16" [5 mm]) must be drilled in the discharge pipe below the check valve and pit cover to purge the unit of trapped air. Trapped air is caused by agitation and/ or a dry basin. Vent hole should be checked periodically for clogging. The 53® / 57, and

The pump has a vent hole located in the pump housing opposite the float, adjacent to a housing lug, but an additional vent hole is recommended. If you choose not to drill a vent hole, be sure the pump case and impeller is covered with liquid before connecting the pipe to the check valve and no inlet carries air to the pump intake. NOTE: THE ...

Nov 1, 2018 · As per the forums and the Zoeller instructions I drilled a 3/16 vent hole at a 45 degree angle in the bottom pipe, about 6 inches above the pump. So after all this I was quite proud of myself. The pump and the water backup work great.

Mar 29, 2023 · Today we’ll discuss why Zoeller sump pumps need an air vent hole, where they are on the pump, and how big they should be. Ensure your Zoeller sump pump is working properly by finding out the importance of the weep hole for sump pumps.

This product requires a 3/16-in vent hole to be drilled in the discharge pipe, level with the top of the pump. The vent hole should be checked periodically for clogs.

View and Download Zoeller 1099-0001Q quick reference manual online. DUAL SWITCH SUBMERSIBLE SUMP PUMP. 1099-0001Q water pump pdf manual download.

3. INFORMATION - VENT HOLE PURPOSE. It is necessary that all submersible pumps capable of handling various sizes of solid waste be of the bottom intake design to reduce clogging and seal failures. If a check valve is incorporated in the installation, a vent hole (approx. 3/16”) must be drilled in the discharge pipe below the

4.Vent hole. It is necessary that all submersible sump, effluent, and sewage pumps capable of handling various sizes of solid waste be of the bottom intake design to reduce clogging and seal failures. If a check valve is incorporated in the installation, a 3/16” (5 mm) vent hole must be drilled in the discharge pipe below