PV-Series Biotube® Pump Vaults have a smaller-diameter design to
fit in tanks with narrow access openings. They incorporate a molded-in
flow inducer that houses one Orenco® high-head effluent pump.
PV-Series Pump Vaults are used to filter up to two-thirds of the
suspended solids from wastewater effluent flowing from septic tanks
or separate dosing tanks in effluent sewer (STEP) systems and onsite
wastewater systems.1 Effluent enters through inlet holes around the
perimeter of the vault and flows through the Biotube effluent filter
cartridge to the external flow inducers. The filter cartridge can be
removed without pulling the pump or the vault.
Ronald Crites and George Tchobanoglous. Small and Decentralized Wastewater Management Systems. Boston: McGraw-Hill, 1998.