Orenco Biotube ProPak BPP50TDA Pump Package 50 GPM Timed DoseOrenco BPP50TDA Biotube ProPak Applications Orencos Biotube ProPak Pump Package is a fully integrated pump package for wastewater applications. It is designed specifically for use in single compartment or dual compartment septic tanks to filter and pump effluent to a drainfield or to secondary treatment without the need for a separate pump tank. The Biotube ProPak pump package includes the following components: ProPak Pump Vault 4 inch (100 mm)