Pentair PacFab TR140 Air Relief Tube [Pre 11/99] (154438) airbuttonparts supporting cleaner internal layout and

supporting cleaner internal layout and safer serviceability

or missing hose cone replacement

Paired cartridge systems require the right size on both elements to maintain proper balance and fit inside the housing

Because it is part of the gas and safety control circuit

A VGB outlet is useful because it helps provide a covered suction point while supporting safer water-intake performance in compatible drain installations

Pentair PacFab TR140 Air Relief Tube [Pre 11/99] (154438) airbuttonparts supporting cleaner internal layout andThis replacement air relief tube is intended for repair situations where small fitment details matter and generic substitutions can create leaks, vibration, or poor service results. Because it is matched to the listed part number, it can help reduce guesswork when replacing older hardware, internal filter parts, pump pieces, or valve components. The 154438 component supports sand filter service where internal positioning, air relief, or media flow can