E-cowlboy 154856 8-1/2in Buttress Closure Kit for Triton II/TR100/TR140 & C-3 – Includes Air Relief Valve, PSI Gauge & Wrench

Effortless maintenance with a complete closure kit

Engineered by E-cowlboy, the 154856 8-1/2 inch buttress closure kit is designed to restore reliable sealing on compatible Triton sand filters. Built for durability, it combines corrosion-resistant materials with a triple-seal design and precise fittings to support leak-free operation in pool and spa environments. This is more than a replacement part; it is a thoughtfully packaged solution that takes the guesswork out of upkeep.

Whether you are refreshing an aging unit or replacing a worn closure, you’ll appreciate how the kit brings together essential components in one box. The inclusion of a PSI gauge allows real-time monitoring, while the air relief valve helps manage safe venting during start-up and operation. The result can be smoother filter cycles, clearer water, and fewer interruptions from leaks or pressure fluctuations.

Compatibility and fitment

Designed as a direct replacement for Triton II TR100 and TR140 units manufactured after October 1, 2001, as well as Triton II Commercial TR100C and TR140C, and Triton C-3 Commercial filters manufactured before March 1997. The 8-1/2 inch closure lid uses standard buttress threads to align with compatible models, providing a stable seal and straightforward installation.

What’s included and how it helps

• Air relief valve lid — helps vent excess pressure safely
• PSI gauge 0–60 — enables real-time monitoring of filter pressure
• Two O-rings — ensure heat and corrosion resistance for durable sealing
• Air safety valve lock nut — enhances sealing and reliability
• Lid wrench — makes installation and service quick and simple

Key benefits and performance notes

• Triple-seal design with O-rings and copper lock nut helps minimize top-seal leaks by a large margin.
• Tested to operate at 50 PSI, supporting robust, long-lasting performance under normal pool and spa conditions.
• High-strength ABS plastic and stainless steel construction resist corrosion and wear in humid environments.
• Real-time pressure feedback with the included PSI gauge aids timely maintenance decisions.
• User-friendly lid wrench simplifies installation and future lid maintenance.

Durability, testing, and installation tips

Factory-tested for precise fit and leak-free performance, this kit is built to endure daily pool and spa use. The durable materials, including rubber O-rings and a copper lock nut, contribute to long-term reliability. For best results, inspect O-rings, apply silicone grease, align the lid properly, and tighten with the included wrench. Regular monitoring of the PSI gauge helps you catch issues before they affect circulation.

With its all-in-one design and clear compatibility notes, the E-cowlboy closure kit offers a practical path to restoring filter performance without guesswork. Aimed at ongoing reliability and user-friendly maintenance, it comes with a satisfaction guarantee and is designed to perform in demanding pool and spa environments.