Choose A Product Family Tanks, Risers, Lids, and Accessories Pumping Packages and Components Effluent Filters Control Panels, Alarms, and Floats Treatment Systems and Drainfield Supplies Additional Onsite Products    Choose A Product ProSTEP™ Effluent Pumping Packages (PSA) ProSTEP™ Effluent Pumping Packages (PSB) Biotube Pump Vaults High-head Effluent Pumps — PF, PA, PJ Series Replacement Pump Motors Replacement Pump Liquid Ends Pump Rebuild Kits Grundfos Low-head Effluent Pumps Solids-Handling Pumps Grinder Pumps Dosing Siphons — 2-inch Dosing Siphons — 3-inch and 4-inch Dosing Siphons — 6-inch and 8-inch Internal Splice Boxes External Splice Boxes Explosion-Proof Splice Boxes Conduit Seals Float Switch Assemblies Float Collars Standard Pump Discharge Assemblies Cold Weather Pump Discharge Kits External Flex Pump Discharge Assemblies Effluent Screens Screened Pump Vaults Pump Basins

 

	Dosing Siphons — 3-inch and 4-inch Orenco dosing siphons can be used as an alternative to pumps when dosing downhill and timed dosing is not necessary. Flow rates can range from just a few gallons per minute to several hundred gallons per minute, depending on siphon size. Dosing siphons use no moving parts. To monitor siphon operation, include a float option on your dosing siphon and order a digital dose counter. See Digital Counters. For help selecting dosing siphons, contact your local Distributor or Orenco Systems. Note: External Vent assembly sold separately.
	Product Nomenclature
	Product Example Model Code OSI310B   Description Dosing Siphon, 3-in. diameter, 10-in. drawdown, with mounting bracket
	Related Products Siphon Sitters — AMSSII Siphon Sitter II