G-QS-320 Replacement Sterilight QS-320 Quartz Sleeve for SP320-HO

Maintain the performance and reliability of your UV water treatment system with the G-QS-320 Replacement Quartz Sleeve, a premium compatible replacement for the Sterilight / Viqua QS-320. Manufactured from high-quality fire-polished fused quartz, this sleeve provides exceptional UV light transmission while protecting the UV lamp from direct contact with water.

Featuring a closed (domed) one-end design, the G-QS-320 is supplied complete with two replacement EPDM O-rings for a secure, leak-free installation. It is compatible with a wide range of Sterilight, Viqua, R-Can and Evoqua Water Technologies UV disinfection systems.

Over time, limescale, iron, manganese and other mineral deposits can accumulate on the quartz sleeve, reducing UV transmission and decreasing the effectiveness of your UV system. Routine cleaning and replacement help maintain optimum UV output and ensure effective disinfection.

Features & Benefits

• Compatible replacement for Sterilight / Viqua QS-320
• Premium fire-polished fused quartz
• Closed (domed) one-end design
• Excellent UV light transmission
• Protects the UV lamp from direct water contact
• Supplied complete with 2 EPDM O-rings
• Precision manufactured for a reliable, leak-free seal
• Easy to install during routine maintenance
• Cost-effective alternative to the original QS-320 quartz sleeve

Technical Specifications

• Product Code: G-QS-320
• Replaces: Sterilight / Viqua QS-320
• Length: 451 mm
• Outside Diameter: 23 mm
• Inside Diameter: 20 mm
• End Type: Closed (Domed) One End
• Material: Fire-polished fused quartz
• Supplied with: 2 × EPDM O-rings

Maintenance Recommendations

For optimum UV system performance:

• Clean the quartz sleeve every 6–12 months, depending on water quality.
• Remove mineral deposits using Calcium, Lime & Rust (CLR) remover or white vinegar.
• Replace the quartz sleeve every 2 years to maintain maximum UV transmission.
• Inspect the O-rings during servicing and replace them if they become worn or damaged.

Compatible UV Lamp

Designed for use with the Sterilight / Viqua S320RL-HO UV lamp.

Compatible UV Systems

Evoqua Water Technologies

• W2T376803

R-Can / Sterilight

• QS-320
• S320RL-HO
• SC-320
• SCM-320
• SCMV-320
• SCV-320
• SP320-HO
• SPV-6

Viqua

• QS-320
• S320RL-HO
• SC-320
• SCM-320
• SCMV-320
• SCV-320
• SP320-HO
• SPV-6

This compatibility is based on published manufacturer cross-reference data for the QS-320 quartz sleeve.

The G-QS-320 is a premium compatible replacement quartz sleeve offering exceptional optical clarity, durability and long service life. Manufactured to high standards, it provides a cost-effective alternative to the original Sterilight/Viqua QS-320 while maintaining the UV transmission required for effective ultraviolet water disinfection.