Aqua Ultraviolet Clear Quartz Cap (A40011)

About This Product

The Aqua Ultraviolet Clear Quartz Cap (A40011) is a genuine replacement component designed for compatible Aqua Ultraviolet UV sterilizers and clarifiers. Featuring a distinctive clear-blue design, this replacement cap allows aquarium and pond owners to visually confirm that their ultraviolet lamp is illuminated while helping maintain the proper assembly of their UV filtration equipment.

UV sterilizers play an important role in maintaining clean, clear aquarium and pond water by exposing circulating water to ultraviolet radiation. Over time, UV equipment components can become worn, discolored, cracked, or damaged from regular use and environmental exposure. Replacing deteriorated parts helps maintain the reliability and serviceability of the sterilization system.

The Aqua Ultraviolet A40011 features a translucent blue construction that makes it easy to observe the glow produced by an operating UV lamp without disassembling the equipment. This convenient visual inspection feature helps users quickly determine whether the lamp is illuminated during normal operation.

Designed specifically for Aqua Ultraviolet’s Classic, Statuary, Advantage, and compatible Twist Series UV systems, this replacement cap offers a manufacturer-designed fit for supported units. The cap includes a retaining ring and is intended to replace the original clear quartz cap when it becomes damaged or requires servicing.

Its compact, threaded design allows straightforward replacement as part of routine UV sterilizer maintenance. Whether you’re repairing an existing aquarium UV sterilizer or servicing a koi pond filtration system, the Aqua Ultraviolet Clear Quartz Cap provides a convenient solution for maintaining your equipment.

Features:

• Genuine Aqua Ultraviolet replacement part designed for compatible UV sterilizers and clarifiers.
• Clear-blue translucent construction allows visual confirmation that the ultraviolet lamp is illuminated.
• Convenient lamp inspection helps monitor basic UV lamp operation without disassembling the sterilizer.
• Includes retaining ring as part of the manufacturer’s replacement cap configuration.
• Compatible with Aqua Ultraviolet Classic Series UV sterilizers and clarifiers.
• Supports Advantage Series systems using the specified A40011 replacement cap.
• Compatible with Statuary and supported Twist Series units for convenient replacement.
• Direct replacement design restores the original cap configuration on compatible equipment.
• Threaded connection allows installation in the designated UV sterilizer assembly.
• Convenient maintenance component replaces cracked, damaged, or discolored original caps.
• Suitable for aquarium and pond applications using compatible Aqua Ultraviolet equipment.
• Helps maintain equipment serviceability without requiring replacement of the entire UV sterilizer.
• Compact replacement component suitable for keeping as a spare during routine equipment maintenance.
• Manufacturer-specific fit helps ensure proper compatibility when the correct model is selected.

Specifications:

• Brand: Aqua Ultraviolet
• Product name: Clear Quartz Cap
• Manufacturer part number: A40011
• Manufacturer SKU: 617750-40011-2
• UPC: 617750400112
• Product type: UV sterilizer replacement cap
• Color: Clear Blue
• Design: Translucent cap with retaining ring
• Primary function: UV lamp viewing and replacement cap assembly
• Compatible equipment: Aqua Ultraviolet UV sterilizers and clarifiers
• Compatible series: Classic, Statuary, Advantage, and compatible Twist Series
• Overall length: Approximately 2-1/4 inches
• Female threaded end diameter: Approximately 1-3/4 inches
• Male threaded end diameter: Approximately 1-1/4 inches
• Connection type: Threaded
• Viper Series compatibility: No
• SL Series compatibility: No
• Installation type: Replacement of existing compatible quartz cap
• Electrical requirements: None
• Aquarium compatibility: Freshwater and saltwater systems using compatible UV equipment
• Pond compatibility: Koi ponds and ornamental water gardens using compatible UV clarifiers
• Package contents: 1 Clear Quartz Cap with Ring
• Recommended application: Replacement and maintenance of compatible Aqua Ultraviolet UV sterilizer cap assemblies

Installation and Maintenance Recommendations:

Always disconnect electrical power to the UV sterilizer and associated equipment before removing or replacing the quartz cap.

Turn off the water supply and relieve any pressure within the sterilizer according to the manufacturer’s instructions.

Carefully remove the existing cap and inspect the threaded connections, sealing surfaces, and surrounding components for damage, accumulated debris, or mineral deposits.

Install the replacement cap according to Aqua Ultraviolet’s instructions, ensuring the cap and associated sealing components are properly positioned.

Avoid overtightening threaded components, as excessive force may damage the cap or surrounding fittings.

Once installation is complete, restore water circulation and carefully inspect the assembly for leaks before reconnecting electrical power.

Periodically inspect the cap for cracking, cloudiness, discoloration, or other signs of deterioration. Replace damaged components promptly to maintain proper equipment operation.

Important Compatibility Information:

The Aqua Ultraviolet A40011 Clear Quartz Cap is designed for compatible Classic, Statuary, Advantage, and Twist Series UV sterilizers.

This part is not compatible with Aqua Ultraviolet Viper or SL Series units. These systems require different replacement caps.

The translucent cap allows users to observe the UV lamp’s visible glow; however, a glowing lamp does not guarantee that it is producing adequate germicidal UV-C output.

UV Safety Warning: Never look directly at an exposed operating UV-C lamp. Always disconnect power before servicing UV equipment. The clear-blue cap is intended for visual inspection of the lamp while the sterilizer is properly assembled.

Recommended application: Replacing damaged or deteriorated clear quartz caps on compatible Aqua Ultraviolet UV sterilizers and clarifiers used in freshwater aquariums, marine systems, koi ponds, and ornamental water gardens.