Description
Meet the RK10AC, part of RK2 Systems’ AC Series—commercial-grade foam fractionation engineered for lower flow rate applications while retaining the performance and build quality RK2’s larger models are known for. Backed by nearly 30 years of engineering experience and extensive R&D, the AC Series brings a genuinely commercial-grade fractionator within reach of aquarium professionals, aquaculture operators, and serious home hobbyists alike.
Key Features & Benefits
- Counter-Current Design: Incoming water enters high on the reaction chamber and travels downward through rising air injected low in the chamber—the same proven flow path used across RK2’s entire fractionator range, for maximum contact time and mass mixing.
- Premium Materials: An ozone-resistant molded HDPE base and transition piece are paired with a 1/4″ acrylic reaction chamber, riser/cone, and collection cup.
- Kynar® Mazzei Venturi Injector: A dedicated ozone port allows precise, independent control of main air flow and ozone injection.
- No Acrylic Penetrations: The design avoids tube-wall penetrations through the acrylic body, reducing stress points and the risk of cracking.
- Easy-Access Screw-Top Lid & Adjustable Air Flow Meter: Simple maintenance access, with fine air-flow adjustment and an easy-to-set gate valve on the discharge.
- Efficient Operation: 57-114 LPM operating flow rate for a system capacity of 9,460-22,710 L. Paired with the recommended Vectra L1/L2 DC Pump (recommended), the unit draws roughly 1 amp at 120VAC.
- Compact Footprint: 46 x 91.5 CM base footprint and 195.5 cm overall height, with a 25.4 cm diameter acrylic reaction chamber.
- Upgrade-Ready: Available with an automated wash-down system (external, internal and venturi rinses), true union ball valves at all positions, and a 3″ service pad.

Why Choose the RK10AC?
Commercial Performance, Compact Size: Designed around proven volume metrics rather than gimmicks—no exaggerated needle-wheel claims, just consistent counter-current fractionation.
Built to Last: Ozone-resistant HDPE and acrylic construction with Kynar® fittings stand up to continuous ozone use without breaking down.
Flexible Fit: Equally suited to a large display aquarium, a public exhibit, or a compact aquaculture system needing dependable protein removal in a smaller footprint.
Applications:
Well suited to larger display aquaria, public exhibits, and smaller aquaculture or RAS systems where a compact, low-flow fractionator is needed without compromising on build quality or contact time.
Technical Specifications — RK10AC AC Series Foam Fractionator
Parameter Specification
Model RK10AC
Operating Flow Rate 57-114 LPM
System Capacity 9,460-22,710 L
Reaction Chamber Diameter 25.4 cm
Base Dimensions 46 x 91.5 CM
Height 195.5 cm
Material — Reaction Chamber 1/4″ acrylic; molded HDPE base and transition piece
Injector / Venturi Mazzei® Kynar® venturi injector with dedicated ozone port
Recommended Pump Vectra L1/L2 DC Pump (recommended)
Water Type Saltwater or Freshwater





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