Description
Elevate your marine water quality with the RK75PE, a high-performance saltwater protein fractionator from RK2 Systems—trusted by aquaculture, public aquariums, and aquaponics professionals alike. Engineered with precision and built for durability, this model delivers exceptional removal of dissolved organics, proteins, suspended particulates, and even tints, while boosting dissolved oxygen and reducing bacterial loads.
Key Features & Benefits
- Robust One-Piece Construction: The reaction chamber is molded from high-density polyethylene (HDPE) in a seamless, rotational design—eliminating weak weld points and providing excellent resistance to ozone and corrosion.
- Counter-Current Flow Design: Dirty water is fed in at the top of the chamber and travels downward through rising air bubbles, allowing for highly efficient mass mixing and optimal foam formation.
- Air / Ozone Injection System: Equipped with Mazzei® venturi injectors made from ozone-resistant Kynar®, the fractionator supports both air and ozone injection for enhanced waste removal and oxidation.
- Automated Wash-Down System: A built-in rinse system keeps internal surfaces clean and prevents buildup of dried foam, minimizing maintenance interventions.
- Clear Sight Gauge: Monitor fluid levels and foam formation in real-time via a transparent sight window.
- Durable Valves & Fittings: Fitted with Hayward® or Asahi® ball valves and Spears® piping/fittings for reliable, long-term use in marine environments.
- Powerful Performance: Supports a flow rate of ~70 GPM (265 LPM) with a 2-minute contact time, or up to 105 GPM (398 LPM) at 1.5-minute dwell.
- Sturdy Footprint: With a 24″ (60.96 cm) diameter, total height of 102″ (≈ 259 cm), and dry weight of around 235 lb (107 kg), the RK75PE is engineered for demanding systems while maintaining a manageable footprint.
- Waste Collection & Drainage: The fractionator captures concentrated foam in a collection cup, allowing clean drainage and effective export of organics via gravity.
- Ozone-Ready Port: A designated ozone gas connection port allows seamless integration with your ozone generator system for advanced oxidation.
Why Choose the RK75PE?
- Superior Water Quality: By removing dissolved organics and proteins, this fractionator helps reduce bacterial loads, improve water clarity, and enrich oxygen levels—benefiting both animal health and system stability.
- Long-Term Reliability: Built to withstand saltwater conditions and ozone exposure, the HDPE body and stainless hardware deliver rugged, maintenance-friendly performance.
- Scalable Solution: Ideal for mid-to-large-scale systems—whether it’s a public aquarium, aquaculture facility, or live seafood holding tank—the RK75PE enables modular design and reliable fractionation at commercial throughput.
- Optimized Efficiency: The counter-current design ensures maximal contact between water and foam bubbles, improving the efficiency of organic removal vs traditional filtration methods.
Applications:
Perfect for aquaculture, marine exhibits, research facilities, aquaponics systems, or any saltwater life support system that demands superior filtration, oxygenation, and organic load control.
Technical Specifications — RK75PE Saltwater Protein Fractionator
| Parameter | Specification |
| Model | RK75PE (Saltwater, HDPE) |
| Water Flow Rate (Dwell Time) | • 70 GPM @ 2-minute dwell • 105 GPM @ ~1.5-minute dwell (In metric: ~265 LPM @ 2 min, ~398 LPM @ 1.5 min) |
| Reaction Chamber Diameter | 24″ (60.96 cm) |
| Height (Floor to Top) | 102″ (≈ 259 cm) |
| Footprint (Base / Dimensional Footprint) | 32″ × 44″ (≈ 81.3 cm × 111.8 cm) |
| Dry Weight | 235 lb (≈ 107 kg) |
| Operational (Wet) Weight | 1,400 lb (≈ 636 kg) |
| Material — Reaction Chamber | Rotationally molded high-density polyethylene (HDPE) |
| Injector / Venturi | Uses Mazzei® venturi injectors made from ozone-resistant Kynar® |
| Gas Injection Ports | Air / ozone injection port available |
| Rinse System | Automated wash-down system (rinse) to clean the upper chamber / riser area |
| Sight / Monitoring | Clear sight gauge to monitor water and foam levels |
| Standard Valves / Fittings | Hayward® or Asahi® ball valves; Spears® piping & fittings |
| Power / Electrical | ~4.45 A at 230V, single-phase (based on spec sheet for RK75PE) |
| Recommended Ozone Generator | RK-2G model recommended for this fractionator |
