Mini-Rester Water Hammer Arrestor - 1/2" PEX Crimp Tee F1807 (Lead Free)

Water hammer occurs when the flow of moving water is suddenly stopped by a closing valve. This sudden stop results in a tremendous spike of pressure behind the valve which acts like a tiny explosion inside the pipe. This pressure spike reverberates throughout the plumbing system, rattling and shaking pipes, until it is absorbed. Normally, a sufficient pocket of air will absorb such a pressure spike, but if no pocket of air is present, expensive fixtures and appliances within the plumbing system will be damaged as they are left to absorb this pressure spike. Great for in-line PEX installation for quick closing faucets All Mini-Resters are AA size All Mini-Resters are approved for sealed wall installations with no access panel required May be installed at any angle Materials: Arrester body: 304 stainless steel tube Piston: poly piston with two EPDM o-rings Tee body: No Lead brass (unfinished)