Pentair 3/8" Triton II Air Relief Strainer

The Pentair 3/8" Triton II Air Relief Strainer (part number 150035 or 150035Z) is a specialized miniature internal filtration component engineered specifically for Pentair Triton II residential side-mount sand filters (including models TR40, TR50, TR60, TR100, and TR140) and Triton C/C-3 commercial series systems manufactured after November 1999. Injection-molded with a heavy-duty rubber or polymer base, this compact component measures approximately 1-1/4 inches in diameter by 7/8 inches in height and features an integrated fine-mesh screen cap. Its primary operational role is to anchor to the absolute tip of the internal 3/8-inch outside diameter (OD) air bleed tube at the high point of the pressurized tank dome, where it acts as a protective shield that strains out debris and fine silica sand before gas enters the venting line. This mechanism allows trapped air pockets to be continuously and safely purged through the automatic air relief network without letting particulate media bypass or clog the internal plumbing loops, protecting the fiberglass pressure vessel from dangerous pneumatic pressure spikes up to 50 PSI. Built to endure continuous submersion in highly concentrated sanitizing chemicals like chlorine, bromine, and winterizing acid treatments, its streamlined, miniature architecture adds negligible bulk to the filter's interior. This individual air relief strainer screen carries an exceptionally minimal net product and shipping weight of approximately 0.02 to 0.10 pounds (about 0.32 to 1.6 ounces).