AFC Tubular Backwashing Filters

High-Pressure Ronningen-Petter Self-Cleaning Filtration Systems

The AFC series tubular backwashing filter is engineered for high-pressure environments (up to 1,000 PSI) requiring continuous particle removal from 1 to 1,700 microns. Individual stations manage 60 GPM and can be multiplexed to accommodate industrial flow rates nearing 6,000 GPM.

How It Works: The Backwash Process

01. Filtration Mode

Untreated fluid enters the bottom of the station and passes through the element. Particulate is captured on the element surface or settles at the base.

02. Backwash Mode

A 3-way valve opens the drain. System pressure forces filtered fluid back through the element, flushing solids in seconds.

Continuous Flow: In multiplex systems, each station cycles sequentially to ensure consistent flow without system shutdown. 💡 Pro Tip: Size the system to maintain full capacity even while one station is backwashing.

Configuration: Internal vs. External

Criteria	Internal	External
Fluid Value	Low (Wasted)	High (Saved)
Viscosity	Low	High / Viscous
Min. Pressure	>45 PSI	<45 PSI

Single AFC Filter Station

Model Sizing and Capacity Chart