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Surge Restraint, Spring Steel, 1/2"–2" Pipe
Accommodates multiple sizes of 115 standard duty loop hangers. Complies with NFPA® 13 standard by restricting the upward surge movement of activated fire sprinkler systems. Grips the loop hanger, not the nut, allowing fine tuning for height adjustment. Easily installs by hand before or after pipe is positioned in hanger.