Accu-Pulse Pulsation Dampeners are used to reduce the pulsation in a pipeline. They are available in plastic and metal materials of construction, and in various sizes. ... 3/8", 3/4" and 1" pipe connections for the 10 & 85 Cubic Inch models; Available in 8 materials of construction, including PP, PVC, CPVC, PVDF, 316 S/S, Alloy 20, Carbon Steel ...