Description: Equalizer® Surge Dampeners - Integrated SD (ISD) series metal compliment Wilden's® standard bolted air-operated double-diaphragm (AODD) pumps to deliver maximum process fluid containment. They are engineered to reduce fluid pressure and flow fluctuations that are inherent in AODD pumps, providing a smoother discharge flow. This allows the ISD Series to be an ideal solution for a wide range of applications, including, but not limited to, oil and gas, paints and coatings, and chemical. ISD Equalizers are also ATEX compliant Minimizes vibration Controls pipe hammer Enhances downstream instrumentation Increases pump efficiency Extends pump life and reduces noise Meets ATEX II 2 GD X requirements