- HEP Plumbing
- Reverse-osmosis Units

Reverse-osmosis Units
Reverse-osmosis Units | Water Purification | Plumbing | Reliance
Discover the confidence that comes from installing HEP’s reverse-osmosis units plumbing in your Reliance property. Engineered for both residential serenity and industrial stamina, these systems strip away sediments, salts, and microscopic contaminants, delivering crisp, refreshing water straight from the tap. The compact skid-mounted design slots effortlessly into existing pipework, while corrosion-resistant components guarantee long-term performance with minimal maintenance.
Every unit is built around a high-recovery membrane array, advanced pressure regulation, and real-time digital monitoring—so you can track efficiency at a glance and slash operating costs. Whether you’re safeguarding delicate lab equipment or simply elevating everyday hydration, HEP’s proven approach to water purification turns ordinary supply lines into a dependable source of purity, taste, and peace of mind.
FAQs
How does a reverse-osmosis (RO) unit from Reliance purify my water, and what contaminants does it remove?
Our RO systems force water through a semi-permeable membrane under pressure. The membrane’s microscopic pores (≈0.0001 µm) allow only water molecules to pass, rejecting up to 95–99 % of dissolved salts (TDS), heavy metals (lead, arsenic, chromium), fluoride, nitrates, pesticides, pharmaceutical residues, and most microorganisms. Pre-filters (sediment and activated carbon) trap rust, silt, chlorine, and organic compounds before they reach the membrane, while optional post-filtration (UV or carbon polishing) ensures taste and microbiological safety.
What inlet conditions and plumbing requirements do I need before installing a Reliance RO unit?
For optimal performance you’ll need: • Feed pressure: 40–80 psi (2.8–5.5 bar). Below 40 psi we supply a booster-pump model; above 80 psi a pressure-reducing valve is recommended. • Temperature: 5–38 °C (41–100 °F). • TDS ≤ 2,000 ppm; higher salinity may require a custom membrane. • A ½-inch cold-water line with an isolation valve, one standard 110/220 V outlet for the pump/UV, and a nearby drain connection for reject water. Our technicians handle all plumbing work, including saddle valves, drain saddles, and NSF-certified tubing.
How often do I need to replace filters and the RO membrane, and what warning signs should I watch for?
Typical residential usage (10–12 L/day) requires: • Sediment filter: every 6–12 months or if pressure drops noticeably. • Carbon pre-filter: every 6–12 months or if chlorine taste/odor returns. • RO membrane: every 24–36 months, or sooner if TDS reduction falls below 80 %. • Post-carbon/UV lamp: 12 months (lamp) or when taste deteriorates. Indicators include slower flow, rising TDS on a handheld meter, or unusual taste/odor. Reliance offers automated reminders and preventive maintenance visits so you never miss a change-out.
Is RO water safe for drinking and cooking, and does it remove healthy minerals?
Yes. RO water meets or exceeds WHO and BIS (IS 10500) drinking-water standards. While the membrane strips most dissolved solids—including calcium, magnesium, and potassium—your diet supplies the vast majority of these minerals, so health impact is negligible. If you prefer a balanced taste and slight mineral content, we can add an NSF-certified remineralization cartridge that re-introduces calcium and magnesium and raises pH to ~7.5.
What maintenance and after-sales support does Reliance provide?
Reliance offers: • Free site survey and professional installation. • One-year comprehensive warranty covering parts and labor. • Optional Annual Maintenance Contract (AMC) that includes two preventive services, membrane cleaning, sanitization, filter kits, performance verification, and emergency breakdown calls within 24 hours. • Genuine spare parts, 24×7 helpline, and a nationwide service network. All technicians are trained, background-verified, and carry TDS meters to validate water quality before leaving your premises.
How much wastewater does an RO unit generate, and can I reuse it?
A standard residential RO discards 2–3 litres of concentrate for every litre of purified water (recovery 25–35 %). Efficiency depends on feed TDS and pressure; models with an internal recirculation pump can reach 50 % recovery. Discharge water is not harmful—it contains the same minerals at higher concentration and is chlorine-free—so it can be routed to floor mopping, toilet flushing, car washing, or gardening (non-edible plants). Our installers can plumb a separate reject-water line or storage tank on request.