HydroLogic® Stealth-RO™ 300 Flush Valve Flow Restrictor - For Stealth-RO™ 300 Systems

Flow Restrictor for Stealth-RO 300 Membrane Flush Cycles

Flushing an RO membrane without proper flow regulation risks pressure spikes and surges that shorten membrane life instead of protecting it. This flow restrictor is engineered specifically for Stealth-RO 300 systems, controlling water flow during the flush valve cycle so the system stays within its intended operating parameters every time it flushes.

Replacing a worn or missing restrictor restores proper flush cycle performance, reducing fouling buildup and helping extend the membrane's service interval.

Key Features & Benefits

• Precise flow regulation — controls water flow rate during the flush valve cycle to maintain Stealth-RO 300's optimal operating parameters.
• Membrane protection — proper flow restriction during flushing helps prevent damage from pressure spikes or flow surges.
• System-specific engineering — designed exclusively for Stealth-RO 300 systems with the correct flow rating for that model.
• Extends membrane service life — correct flush cycle flow management reduces fouling buildup over time.
• Simple drop-in replacement — restores proper flush performance without modifying the surrounding plumbing.

Who Should Use This

Stealth-RO 300 operators whose flush cycle seems inconsistent, or who know their flow restrictor is worn or missing, should replace this part to keep membrane flushing within its designed flow parameters and protect membrane longevity.

About HydroLogic

HydroLogic has focused for roughly 20 years on water-efficient purification technology for gardening, hydroponic, residential, and commercial use, and this flow restrictor reflects that same attention to precise, system-specific flow engineering within the Stealth-RO 300 line.

Frequently Asked Questions

What does a flush valve flow restrictor actually do?

It regulates how quickly water moves through the system during the membrane flush cycle, keeping that flow within the range the Stealth-RO 300 is designed for. Without it, flushing can happen too fast or too slow, either stressing the membrane or leaving sediment behind.

Is this restrictor specific to the Stealth-RO 300, or does it fit other Stealth-RO systems?

This restrictor is engineered exclusively for Stealth-RO 300 systems, with a flow rating matched to that model's specifications. Check your system model carefully before ordering, since other Stealth-RO capacities use different restrictor ratings.

How do I know if my flow restrictor needs replacing?

Watch for a flush cycle that seems noticeably faster or slower than normal, or inconsistent flush performance over time. Either can indicate a worn or missing restrictor that's no longer regulating flow correctly.

Does replacing this part require draining the whole RO system?

Most Stealth-RO 300 flush valve components can be serviced without a full system drain, but following HydroLogic's specific service instructions for your unit is the safest way to confirm the exact steps needed. Shutting off the water supply and relieving system pressure beforehand is recommended regardless of the specific steps your model requires.