Products
QR04 Premium Reverse Osmosis
- Quick Change Cartridges
- USA Made Cartridges & System
- Optional Remineraliser
QRO4 Quick-Change 4-Stage Reverse Osmosis System
Quick-change RO with a fast 75 GPD (≈300 LPD) membrane, a self-seal valve head for sub-2-minute filter swaps, and premium fittings throughout. Ships complete with a 550 kPa PLV (with isolation valve), your choice of designer faucets, and mains connection kit. Low ~1:1 waste ratio.
Also Known As
This model is also sold as HydrROtwist or PuRO Twist in some markets.
Why Choose This System?
- Faster output — our QRO4 stocks the 75 GPD (300 LPD) membrane, not slower variants.
- Self-seal valve head — when you undo the first cartridge (Q5605), incoming water auto-shuts off. No mains shutoff needed.
- 2-minute cartridge changes — genuinely easy to service yourself.
- Premium hardware — John Guest Speedfit push-in fittings for breeze-through installs.
- Complete kit — includes tubing, hardware, and even thread-sealing tape.
- 9 designer faucets — choose your finish and style.
- Certified — meets NSF standards 42, 53, 58, 61.
- Low waste ratio (~1:1) — about 50% less waste than many brands.
How It Works: 4-Stage Filtration
- Stage 1 — Q5605 5-micron sediment removes dirt, rust & particulates. Buy
- Stage 2 — Q5640 GAC carbon reduces chlorine, chemicals & odours. Buy
- Stage 3 — Q-Series 75 GPD TFC membrane (≈300 LPD, 0.0005 µm) targets dissolved salts (incl. fluoride) & heavy metals. Buy
- Stage 4 — Q5640 carbon post-filter high-grade polishing for taste. Buy
System Specifications & Features
- Dimensions — 42 cm (H) × 42 cm (W) × 10 cm (D).
- Pressure — minimum 40 psi (280 kPa), ideal ≥ 50 psi (350 kPa).
- PLV & isolation valve — 550 kPa pressure-limiting valve included.
- Fittings — genuine John Guest Speedfit push-in.
- Ready to install — product ships complete.
Connection Types
- ½″ Flick-Mixer Braided Line — common in modern kitchens.
- ¾″ Dishwasher Adapter — use dishwasher cold outlet if available.
- ½″ Tee Olive Fitting (Copper) — typical for older separate hot/cold taps.
What’s in the Box
- 550 kPa pressure-limiting valve with isolation valve
- Mains connection kit of your choice (½″ tee olive, ¾″ dishwasher adapter, or ½″ easy-fit braided-line mixer adapter)
- Your choice of designer faucets (multiple finishes)
- Genuine John Guest Speedfit push-in fittings
- All tubing & mounting hardware
- Thread-sealing tape
Storage Tank Options
- Available sizes — 4.2 L, 9 L, or 12 L stainless steel (all NSF certified).
- See tank details
Main unit and tank can lie on their side/back to suit tight installs and will operate in that position.
Faucet Options
See our premium faucet range, then select your choice from the product options above.
Replacement Cartridges & Maintenance
Helpful Resources
- Reverse osmosis storage tanks — details
- Waste ratios explained — learn more
- Mains connection install guide — how each adapter is installed
- Warranty (5 years) — see terms
- Selection advice — which system suits me?
- Membrane treatment rates (PDF) — download
Warranty
5-year warranty covering defects in materials and workmanship under normal use. Built with high-grade components for long-term reliability — see our warranty page for full terms.
