Swimables 154856 8-1/2” Buttress Thread Filter Closure Replacement Kit for Triton II TR100 TR140 & Triton C-3 Pool Sand Filters - Includes Lid, PSI Gauge, Air Relief Valve, O-Ring & Wrench

Keep your pool filtration system running at peak performance with the Swimables 154856 8-1/2” Buttress Thread Filter Closure Kit, a precision-engineered OEM replacement designed for Triton II and Triton C-3 pool sand filters. Whether you’re replacing a cracked lid, worn O-ring, or leaking air relief assembly, this complete kit restores a secure, leak-free seal with confidence.This closure kit is a direct replacement for OEM part #154856 and is specifically designed to fit Triton II TR100 and TR140 filters manufactured after October 1, 2001, as well as Triton C-3 commercial sand filters manufactured before March 1997. Compatible models include TR100, TR140, TR100C, TR140C, TR100C-3, and TR140C-3. This is the 8-1/2 inch buttress thread version only and will not fit 6-inch or other sizes.Constructed from reinforced ABS plastic, corrosion-resistant stainless steel components, and heavy-duty rubber seals, this closure assembly is built to withstand harsh pool chemicals, outdoor exposure, and continuous system pressure. The upgraded buttress thread design combined with a precision-sized O-ring delivers a tight, even seal that helps eliminate common top leaks and pressure loss. Each unit is factory tested up to 50 PSI to ensure strength, durability, and long-term reliability.The all-in-one replacement kit includes everything needed for a complete installation: closure lid, PSI pressure gauge, air relief valve, heavy-duty O-ring, air safety valve lock nut, and a custom lid wrench. The integrated easy-to-read PSI gauge allows accurate pressure monitoring so you’ll know exactly when it’s time to clean or service your filter, helping extend filter life and maintain optimal water clarity.Installation is fast and DIY-friendly, no special tools required. Simply install the pressure gauge and air relief valve, lubricate the O-ring with silicone grease, and hand-tighten the lid with an additional ¼ turn using the included wrench.Designed for pool owners, service professionals, and commercial applications alike, the Swimables 154856 Buttress Thread Closure Kit delivers OEM-level fit, dependable sealing, and long-lasting performance you can trust.

• Wide compatibility: Compatible with Pentair TR series designs, compatible with multiple models, including TR II, TR100 | TR140, TR100C | TR140C, TR100C-3 | TR140C-3.It fits models manufactured after 10-01-01 for TR100/TR140 and before March 1997 for Triton C-3.
• Leak-Free Triple-Seal Design: Equipped with heavy-duty O-rings, a reinforced copper lock nut, and a secure dome seal, this kit prevents 99% of top leaks. Factory-tested at 50 PSI, built to withstand continuous use.
• Complete All-in-One Closure Kit: Includes everything required for a full replacement: closure lid, PSI pressure gauge, air relief valve, heavy-duty O-ring, air safety valve lock nut, and custom lid wrench, eliminating the need to purchase parts separately.
• Durable ABS & Stainless Steel Materials: Crafted from high-grade ABS plastic, corrosion-resistant stainless steel, and heavy-duty rubber seals, offering long-lasting durability in all pool and spa conditions.
• Easy installation: Comes with a dedicated wrench and all necessary components, allowing you to easily replace without the need for additional tools or professional skills, ensuring quick restoration of pool filtration function.