Orenco Biotube® pump vaults are used to transport filtered effluent from septic tanks or separate dosing tanks in effluent pumping systems. They are a critical component of individual onsite systems and effluent sewer collection systems. Pump vaults house a Biotube effluent filter and one or two Orenco high-head effluent pumps and can be used in single-compartment septic tanks with flows up to 40 gpm. When flows are greater than 40 gpm, a double-compartment septic tank or separate dosing tank is recommended. Pump vaults are 12 in. in diameter, and accommodate one pump (simplex) or two pumps (duplex). Each pump vault comes with a Biotube filter cartridge, vault housing, support pipes, and float bracket to hold the float assembly. Custom lengths can be produced.