1 1

QS-740 - Domed End Compatible Viqua Sterilight Quartz Sleeve, Sterilight and Viqua SPV-740, SPV-15, SP740-HO, SC740 & scm740 UV systems.(QJ23872DE)

QS-740 - Domed End Compatible Viqua Sterilight Quartz Sleeve, Sterilight and Viqua SPV-740, SPV-15, SP740-HO, SC740 & scm740 UV systems.(QJ23872DE)

QJ23872DE-QSO-740(Domed End)

In stock

£30.00 Inc. VAT £25.00 Ex. VAT
£30.00 Inc. VAT £25.00 Ex. VAT
Shipping is calculated at checkout

Product Description

Sterilight QS-740 Quartz Sleeve – Compatible with Viqua & Sterilight UV Systems

High-Transmittance UV Quartz Sleeve for Reliable Water Sterilisation

The Sterilight QS-740 Quartz Sleeve is a high-quality, domed UV quartz sleeve designed to protect and house the UV lamp within Viqua / Sterilight Platinum and Cobalt series UV systems. Manufactured from high-transmittance quartz glass, this sleeve ensures maximum UV light penetration for effective UV water sterilisation, while shielding the lamp from direct contact with water.

This quartz sleeve is a direct compatible replacement for Sterilight QS-740 and is suitable for use in Sterilight and Viqua SPV-740, SPV-15, SP740-HO, SC740 & scm740 UV systems.

Key Features & Benefits

  • High UV Transmittance Quartz
    Allows optimal UV-C light output for effective disinfection of bacteria, viruses, and pathogens.

  • Domed End Design
    Engineered to fit correctly within compatible Sterilight and Viqua UV chambers, ensuring proper lamp positioning.

  • Protects UV Lamp
    Prevents water contact with the UV bulb, extending lamp life and maintaining system safety.

  • Essential UV System Component
    A clean, undamaged quartz sleeve is critical for maintaining UV dose and system performance.

  • Compatible Replacement Part
    Designed for Sterilight / Viqua Platinum & Cobalt UV systems.

Compatible UV Systems

  • Sterilight and Viqua

    • SPV-740,, SPV-15, SP740-HO, SC740 & SCM740 UVsystems.

Always confirm your existing quartz sleeve reference and system model before ordering.

Technical Specifications

Feature Specification
Product Code QS-740
Material High-transmittance quartz glass
Length Approx. 872mm
End Type Domed
Replacement Interval Typically every 24 months
Application UV water disinfection systems

Maintenance & Replacement Guidance

Quartz sleeves should be:

  • Replaced every 24 months, or sooner if

  • They become etched, cloudy, cracked, or cannot be fully cleaned

A compromised quartz sleeve can significantly reduce UV effectiveness, even if the lamp is functioning correctly.

Why Buy UV Quartz Sleeves from Wrekin Water?

  • Specialist supplier of UV water filtration parts

  • Stocked replacement quartz sleeves for top UV brands

  • Expert technical advice if you’re unsure of compatibility

  • Fast UK dispatch with reliable support

Product Documents

tick in circle

All our orders are sent with tracked courier services

tick in circle

Free Customer Support by experts

QS-740 - Domed End Compatible Viqua Sterilight Quartz Sleeve, Sterilight and Viqua SPV-740, SPV-15, SP740-HO, SC740 & scm740 UV systems.(QJ23872DE)

QS-740 - Domed End Compatible Viqua Sterilight Quartz Sleeve, Sterilight and Viqua SPV-740, SPV-15, SP740-HO, SC740 & scm740 UV systems.(QJ23872DE)

£30.00 Inc. VAT £25.00 Ex. VAT
£30.00 Inc. VAT £25.00 Ex. VAT

Frequently asked questions

For full details on returns, refunds, eligibility, and timeframes, please refer to our complete Refund Policy here:

👉 Refund and Returns Policy

If you are unsure whether your item qualifies for return, please contact our team before sending anything back and we’ll be happy to help.

Your UV quartz sleeve should be inspected every 12 months when changing your UV lamp. A UV quartz sleeve used in an ultra violet light water treatment system does not always need annual replacement, but it must be cleaned and checked for limescale, staining or cracks. If the quartz sleeve becomes cloudy, etched or damaged, it should be replaced immediately to maintain proper UV transmission and effective water disinfection.

A UV quartz sleeve protects the UV lamp inside your ultra violet light system while allowing maximum UV light transmission into the water. The quartz sleeve creates a waterproof barrier between the electrical UV lamp and the flowing water, ensuring safe and efficient UV disinfection. Without a clean and intact UV quartz sleeve, the ultra violet light cannot effectively neutralise bacteria, viruses and microorganisms.

Yes. Limescale, iron and manganese buildup can coat the UV quartz sleeve and reduce the amount of ultra violet light passing through the glass. This reduces UV performance and can compromise water safety. In hard water areas, regular cleaning of your UV quartz sleeve is essential to maintain optimal UV output and ensure your ultra violet light system continues to operate correctly.