The EPDM lining in these joints meets NSF/ANSI 61 standard for use with drinking water. To reduce stress, vibration, and noise in piping systems, they provide a point of flexibility to absorb movement. These joints have a flexible body reinforced with polyester cord for added strength. A zinc-plated steel plate supports each flange. The flanges mate with the same-size flat-surface Class 150 flange without the need for a gasket.

Position the expansion joints as close as possible to anchor points. Attach limit rod sets (sold separately) to the flanges to prevent overextension where anchoring is insufficient. To accommodate the thickness of the limit rod mounting plate, use bolts that are 7/8" longer than the bolts connecting the expansion joint to the pipe flange. Each set of limit rods requires eight bolts (not included).