![e 1 sewage ejector system e 1 sewage ejector system](https://images.thdstatic.com/productImages/630f4212-aed1-412a-915d-d892644a3143/svn/everbilt-septic-pumps-sw07501tc-64_1000.jpg)
Mercury by nature is a good conductor, especially for low currents, i.e. The advantage of mercury is that you have self-renewing contacts. What are the advantages and disadvantages of mercury and mechanical? The pump size should be based on the performance of the pump, not its horsepower rating. A larger pump could cause to much pressure for the system. A system should be sized to the pump performance not the horse power. If a 1/3 HP pump is good, is a 1/2 HP pump better? This will prevent the gases from attacking the watertight gaskets. Because of the gases involved with septic tanks, we recommend keeping the pump completely submerged. The depth of your pump will depend on your local codes. Some alternative disposal technologies also require dosing. Or there could be an abnormally high flow in a short timeframe, i.e.: at a rural church. When the application field is not of sufficient size or quality to handle normal dosing. When is it appropriate to use a time dose system rather than a level switch demand system? If a check valve is installed, all piping must be below the frost line. Only a pump specified as being suitable for effluent or sewage should be used in a septic system.Ī check valve should only be used if the total volume of liquid capable of draining back into the pump chamber is greater than approximately 25% of the volume per cycle. Pumps that are rated as “Sump/Effluent” by the manufacturer can be used in the septic system. Septic systems that are too small, abused by using strong caustic drain openers, and improperly maintained can cause significant reduction in the pump’s life. This depends on the application and proper system design. Pumps rated for effluent applications usually have a solids size rating of 1/2" to 3/4" spherical diameter. Two reasons: (1) to keep the pump partially or fully submerged and (2) to provide for an adjustable pumping range for proper dosing. A symptom of not having an air vent would be the pump runs but no water is being discharged. The air vent hole allows air trapped under the check valve to escape. Why use an air vent hole in my discharge pipe? A smaller basin will hold less water per inch causing the pump to cycle more often. Generally, the minimum diameter pipe size is 1 1/2” for effluent pumps but local codes may dictate pipe size. The pipe size depends on the system requirements. Reducing the pipe will increase friction causing the flow rate to decrease. Yes, but the pipe size should not be reduced smaller than the pump solids passing capabilities.