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Fact Sheet Hydrosplitters - Equal ., Distribution on a Slope DEQ State of°raga! Depeztment of What is a hydrosplitter? Size orifices to proportionally distribute to each A hydrosplitter is a device that distributes wastewater trench,determining the size by specific OuaBty under pressure through the use of two or more orifices calculations.Drill orifices smooth and straight. and pumping from a dosing tank or chamber in a The orifices will need at least two feet of head onsite Program pressure transport pipe,as well as gravity flow to pressure.Disks must be removable for cleaning. 165 E Seventh Ave.,Suite trenches. 100 Other designs may be considered on a case-by- Eugene,OR 97401 Comprised of plastic components,each hydrosplitter is case basis.Design necessities include,ability to Phone: 541-686-7838 800-844-8467 designed to meet the specific needs of an application. be monitored and maintained.The distribution Contact:Randy Trox,DEQ should also be proportionate so its use would not Western Region onsite When to use a hydrosplitter? create a public health hazard. wastewater specialist Sloped sites may need hydrosplitters to achieve equal distribution.Hydrosplitters should be used to receive Pipe considerations www.oregon.gov/DEQ effluent by pump to distribute to gravity drainfield Show the size of the pipe connected to the laterals of varying lengths and elevations. hydrosplitter on construction plans as it is an important design consideration. Smaller diameter DEQ is a leader in restoring, maintaining and enhancing pipes can fill completely and create a vacuum, the quality of Oregon's air, *' which will have one or more lines siphoning land and water. r , effluent.Instead,transition to larger gravity r,,,,tj 49 piping outside the hydrosplitter enclosure. 14 7 i Siting considerations , , , Place hydrosplitters in an enclosure with a lid erom— d ` - , and a solid floor to restrict access for rodents �, "` / l while also protectingunions and valves from �i« , a r ` � -, S '--` _w s , soil.Opening unions or valves can be difficult or b , ` \" `� impossible when soil particles get into them. -,-.\ F )" Place a drain hole in the lower part of the 4;� % %•f/1' enclosure to drain condensation.Insulate the R o � � 4's- Ole'''. ` -A PP-it: enclosure where freezing is a concern.Exercise �`° -`-` `�t care when working in here,as spiders,scorpions An accessible and well-marked hydrosplitter.Photo courtesy of Brian Rabe, Cascade Earth Sciences and other stinging insects may be residing in this enclosure. Design considerations Locate the top of the hydrosplitter pipe at least 6 A hydrosplitter will require periodic maintenance for the life of the system.The unit must be accessible for inches higher than the top of the header pipe of cleaning and removable for inspection or replacement. the uppermost trench,ensuring the appropriate proportional flow to each trench. Hydrosplitters have disks with orifices sized to distribute an equal proportion of effluent based on gallons per foot Each discharge pipe must discharge into a to each trench.Orifices should be as large as practicable, distribution box,drop box or other method minimizing potential for blockages,and not smaller than acceptable to the agent as a means of monitoring an eighth of an inch. Soon after startup,residual debris, system performance.The flow from each orifice such as shavings and glue,may clog orifices and should should not vary more than 10%from its design rate. be checked early on.