sewage ejector pump system piping diagram

Sewage ejector pump system piping diagram manual#

Sewage ejector pump system piping diagram manual#

The 2018 Uniform Plumbing Code Illustrated Training Manual is available for purchase here. There is also a difference in design requirements between single-dwelling units (private) with one pump and a discharge pipe size of two inches in diameter, and other occupancies (public) with two pumps and a discharge pipe size of three inches in diameter (see Figure 710.3b). For example, if the performance curve shows a discharge capacity of 20 gpm at 15 feet of head, then any height exceeding 15 feet does not meet the minimum discharge capacity of the pump.

Venting is typically done using a vent pipe, which is connected to the pump and extends above the roofline of the building. This prevents the build-up of pressure, which can lead to malfunction or damage to the pump. Therefore, the minimum discharge capacity of 20 gpm depends on the head height. The purpose of venting a sewage ejector pump is to allow the release of air and gases that are trapped in the system. The greater the head is in height, the less the performance is in pumped gallons per minute. The discharge capacity of the pump is determined by the pump's performanceĬurve showing the relation between pumped gallons per minute and the total dynamic head in feet (see Figure 710.3a). This is usually accomplished by the plumbing design professional. To design this pumped waste system and correctly size the sump pump depends on the flow rate of the fixtures flowing into the sump. Where the discharge line connects into horizontal drainage piping. Pumps connected to the drainage system shall connect to the building sewer or shall connect to a wye fitting in the building drain a minimum of 10 feet (3048 mm) from the base of any soil stack, waste stack or fixture drain. (3) In other than single-dwelling units, the ejector or pump shall be capable of passing a 2 inch (51 mm) diameter solid ball, and the discharge piping of each ejector or pump shall have a backwater valve and gate valve, and be not less than 3 inches (80 mm) in diameter. P3007.3.5 Ejector connection to the drainage system. WSSC recommends maximum pumping head for system design to be ninety (90) percent of the manufacturer’s. (2) In single dwelling units, the ejector or pump shall be capable of passing an 1 1/2 inch (38 mm) diameter solid ball, and the discharge piping of each ejector or pump shall have a backwater valve and gate valve, and be not less than 2 inches (50 mm) in diameter. Design an E/1 semi-positive displacement pump at one hundred twenty-five (125) feet (maximum) of pumping head, although the manufacturer’s pump performance curve may show a maximum operating head of one hundred thirty-eight (138) feet. (1) Shall have a discharge capacity of not less than 20 gpm (1.26 L/s). A sewage ejector or sewage pump receiving the discharge of water closets or urinals: When a connected fixture like a sink or toilet runs, the wastewater flows into and fills the sealed holding tank. But this basin is sealed and connected to a vent pipe releasing sewer gasses outside. If you have questions or comments, join the discussion on our LinkedIn forum.įrom the 2018 UPC Illustrated Training Manual, Chapter 7, SANITARY DRAINAGEħ10.3 Sewage Ejector and Pumps. Ejector pumps have a holding basin collecting incoming wastewater, like a sump pump.