Pentair PacFab TR100 Air Relief Tube [Pre 11/99] (154437) audio That makes the union-style design

That makes the union-style design a practical advantage in addition to its flow-control role

making routine maintenance easier while helping protect downstream pump and filter components

When the original adapter becomes worn

or surface maintenance projects

Ideal for repairs or cosmetic refreshes

Pentair PacFab TR100 Air Relief Tube [Pre 11/99] (154437) audio That makes the union-style designWhen a filter, pump, or valve service job calls for the correct replacement detail, this air relief tube gives technicians a dependable fit for the listed application. It is selected for systems where the part must helps guide trapped air out of the filter during startup and normal circulation, making it especially valuable during rebuilds, seasonal maintenance, or component level troubleshooting. The 154437 component supports sand filter service