Pentair Air Relief Tube 27 in. | Triton II TR140 / Triton C-3 TR140C | 154438 Spine Boards This Buna-N compound O-ring at

This Buna-N compound O-ring at 70 Shore A durometer maintains a pressure-tight seal within the FULLFLOXF® diverter valve body

moving it left

Never use petroleum-based lubricants — they will degrade rubber O-rings and accelerate seal failure

total alkalinity (80–120 ppm)

Pentair Air Relief Tube 27 in. | Triton II TR140 / Triton C-3 TR140C | 154438 Spine Boards This Buna-N compound O-ring atThe Pentair Air Relief Tube (Part #154438) is the OEM replacement 27 inch air relief tube for the Triton II TR140 and Triton C 3 TR140C sand filters specifically for units manufactured before November 1999. IMPORTANT: DATE OF MANUFACTURE RESTRICTION This tube is designed for Triton II TR140, TR140C, and TR140C 3 sand filters manufactured before November 1999 only. Filters produced on or after November 1999 require a different part. Check the date code