Pentair 2-3/8" Automatic Air Relief Assembly | 261003 Quad DE Filters The hand nut (yellow) is

The hand nut (yellow) is a replacement part made by Zodiac

AVSC Dual Pebble Top Channel Drain Black – Pentair In-Floor

these gaskets offer enhanced durability and resistance to wear and tear

align the actuator’s spline properly

Making it a strong and durable OEM part

Pentair 2-3/8" Automatic Air Relief Assembly | 261003 Quad DE Filters The hand nut (yellow) isPentair 2 3 8" Automatic Air Relief Assembly 261003 OEM Pentair 261003 2 3 8" air relief assembly. Releases trapped air to maintain pressure and efficient filtration. Features OEM replacement for Pentair Nautilus and select Triton filter systems. Automatically vents trapped air to maintain pressure balance. 2 3 8" connection for secure and proper fit. Improves filtration efficiency and water flow. Durable construction for long service life.