Replacement UV Quartz Sleeve – 6 to 12 GPM UV Sterilizers | UV Water Systems Oman

The quartz sleeve is the component in a UV sterilizer that most users never think about — until it fails. Positioned between the UV lamp and the flowing water, the quartz sleeve serves two functions: it protects the lamp from direct water contact (which would break it due to thermal shock) and it allows UV-C radiation at 254 nm to pass through to the water with minimal absorption. High-purity fused quartz transmits over 90% of incoming 254 nm radiation. But over time, mineral deposits from hard water accumulate on the outer surface of the quartz sleeve, blocking UV transmission and reducing the dose delivered to the water. In Oman, where municipal and borehole water is hard (200–600 mg/L as CaCO₃), quartz sleeve fouling is faster than in soft-water regions. UV Water Systems in Muscat recommends replacing the quartz sleeve annually during the lamp replacement service — or cleaning it with a citric acid solution every six months in areas with particularly hard water supply.

Why the Quartz Sleeve Matters for UV Dose

UV dose delivered to the water is calculated as: Dose (mJ/cm²) = UV Intensity (mW/cm²) × Exposure Time (seconds). If the quartz sleeve’s UV transmittance drops from 90% (new) to 60% (fouled), the UV intensity reaching the water drops by 33% — potentially cutting the delivered dose from 40 mJ/cm² to 27 mJ/cm², which is below the minimum required for 4-log pathogen inactivation. A visibly discoloured or coated quartz sleeve is not transmitting the full UV dose, regardless of whether the lamp is still illuminated. Annual sleeve replacement during the UV lamp change is the most cost-effective way to ensure continuous full UV dose delivery.

Key Features and Benefits

High-purity fused quartz construction: ≥90% UV transmittance at 254 nm when new — the same optical quality used in OEM UV sterilizer components, ensuring full lamp output reaches the flowing water without dose reduction from the sleeve material.
Compatible with 6–12 GPM UV chambers: Dimensions match the common residential and light-commercial UV sterilizer chamber sizes supplied by UV Water Systems in Muscat — Aquapro and compatible equivalent units in this flow range.
Annual replacement recommended: Mineral fouling in Oman’s hard water conditions progressively reduces UV transmittance throughout the sleeve’s service life — replacing annually (with the lamp) maintains the validated UV dose throughout the year.
Fragile handling required: Fused quartz is a precision optical material — handled and packaged carefully by UV Water Systems during shipping and installation to prevent micro-cracks that reduce UV transmittance even when the sleeve appears intact.
Genuine replacement stock held in Muscat: UV Water Systems keeps quartz sleeves for all UV sterilizer models in stock in Muscat for same-day supply — eliminating the multi-week lead time of overseas ordering that leaves UV systems unprotected.

Technical Specifications

Application: 6–12 GPM UV sterilizer chambers
Material: High-purity fused quartz (synthetic)
UV transmittance: ≥90% at 254 nm (new)
Service life: 12 months (or clean every 6 months)
Compatibility: Aquapro and equivalent 6–12 GPM UV chambers

Applications Across Oman

UV Water Systems supplies replacement quartz sleeves for residential and commercial UV sterilizers installed across the Muscat governorate. Quartz sleeve replacement is included in UV Water Systems’ annual residential and commercial UV maintenance service — contact +968 9763 7786 to schedule a maintenance visit or to order a replacement sleeve directly.

Frequently Asked Questions

Can I clean the quartz sleeve instead of replacing it? Yes — mild mineral deposits can be removed by soaking the sleeve in a 10% citric acid or white vinegar solution for 30 minutes, then rinsing thoroughly with clean water. However, cleaning restores only partial transmittance and cannot repair micro-cracks or permanent staining. Annual replacement gives certainty of full UV transmittance that cleaning cannot guarantee.

How do I know if my quartz sleeve needs replacing? Visible signs include a yellow or brown tint on the glass surface, or visible mineral scale deposits. A calibrated UV intensity sensor placed in the effluent stream below the rated minimum indicates sleeve fouling even when it is not visually apparent. UV Water Systems tests UV intensity at every maintenance visit.

UV Water Systems is an ISO 9001:2015 certified water treatment company based in Muscat, Sultanate of Oman, with 14+ years of experience. We supply, install, and service water treatment solutions for residential, commercial, and industrial clients across Oman. Call +968 9763 7786 or visit www.uvwater.biz.

UV Sterilizer Parts

Replacement UV Quartz Sleeve 6 to 12 GPM – UV Water Systems Oman