Our Centrifugal STEP (Septic Tank Effluent Pump) Vault provides an economical means of adding a second compartment to an existing single compartment tank. The centrifugal step vault can also be used in dose tanks. As the name implies, the centrifugal vault relies on a cast iron submersible centrifugal pump. This type of pump is generally less expensive than a 4″ turbine pump and produces more flow at lower pressure. So, the Centrifugal STEP Vault is an economical option when high pressure is not necessary.
Each vault is designed for use in simplex centrifugal pumping applications. With vault heights ranging from 46” to 63,” the Centrifugal STEP Vault can be customized for almost any project. Each vault includes a filter pack with a handle and a pump chamber. A wide variety of submersible pumps can be used in conjunction with this vault.
The filter pack utilizes the deep pleated filter design of Zoeller Pump’s WW1 effluent filter, providing 528 linear feet of filtration area and a flow rate of 4,000 gpd. The filter pack screens solids to 1/16.” The vault’s inlet is specially designed to draw from the clear zone of the tank.