HydroLogic® Stealth-RO™ & TALLBoy® Quick Connect Pressure Regulator Fittings - 3/8in QC

Protect Your Stealth-RO or TALLBoy System from Over-Pressure Damage

The HydroLogic® Stealth-RO™ & TALLBoy® Quick Connect Pressure Regulator Fitting ensures inlet source water pressure never exceeds 85 PSI, protecting an RO system's membranes, housings, and tubing from the pressure-related leaks and failures that occur when household water pressure runs too high. The 3/8in quick connect fitting installs directly into the Stealth-RO or TALLBoy system line without tools.

The integrated pressure regulator works passively to hold inlet pressure at a safe level throughout the system's operation, with no adjustment or monitoring required after installation.

Key Features & Benefits

• 85 PSI maximum inlet pressure protection — limits source water pressure to a safe operating level, preventing leaks and housing damage from high-pressure supply lines.
• 3/8in quick connect fitting — pushes directly onto Stealth-RO and TALLBoy 3/8in QC tubing for tool-free installation.
• Passive pressure regulation — works automatically without adjustment to keep inlet pressure within the safe operating range.
• Prevents pressure-related leakage — addressing high inlet pressure at the source eliminates a common cause of fitting and housing leaks in residential RO systems.

Who Should Use This

HydroLogic Stealth-RO and TALLBoy system owners in locations with high municipal or well water pressure who are experiencing or want to prevent pressure-related leaks and fitting failures.

Compatibility

For: HydroLogic Stealth-RO and TALLBoy systems — Fitting: 3/8in quick connect — Maximum protected inlet pressure: 85 PSI.

Frequently Asked Questions

How do I know if my water pressure is too high for my RO system?

Most residential RO systems are rated for 40-80 PSI inlet pressure. If your supply pressure exceeds 85 PSI, it can cause fitting leaks and housing stress over time — a simple gauge on your hose bib will tell you your actual supply pressure.

Does this fitting reduce pressure for the entire household supply?

No — it only regulates pressure on the specific line feeding your Stealth-RO or TALLBoy system. Your household supply pressure elsewhere is unaffected.

Is installation truly tool-free?

Yes — the 3/8in QC fitting pushes directly onto compatible Stealth-RO and TALLBoy tubing by hand without tools, following the same push-fit method used throughout the QC tubing family. A firm push until it seats is all that's needed.

Can I use this pressure regulator fitting with other RO brands?

This fitting is designed for HydroLogic Stealth-RO and TALLBoy systems. Use with other brands should be verified against 3/8in QC compatibility and fitting dimensions before ordering.