Wilden® has designed its SD Series Equalizer® automatic surge dampener to remove pressure variations on the discharge side of an AODD pump. The SD Series Equalizer®:
- Minimizes unwanted pressure fluctuation by providing a supplementary pumping action: (1) A compressed air line that is attached to the body of the air regulator sets and maintains the pressure on the air side of the diaphragm (2) As the pump begins its stroke, liquid discharge pressure increases, which flexes the SD Equalizer diaphragm inward and toward the air side — this action allows fluid to accumulate in the liquid chamber (3) When the pump redirects its motion upon stroke completion, the liquid discharge pressure decreases, allowing the Equalizer diaphragm to flex outward, displacing the fluid into the discharge line — this motion delivers the supplementary pumping action that is needed to minimize unwanted pressure fluctuations.
- Is a common component in paints and coatings operations where changes in pumping pressures and flow rates, as well as product viscosities are a constant challenge for plant managers.
- Allows for minimized pipe strain, protection of in-line equipment, reduced water hammer, absorption of acceleration head, and lowered maintenance costs.
- Is available in multiple sizes ranging from 13 millimeters (1/2 inch) to 76 millimeters (3 inches), and in a wide variety of materials such as ductile iron, 316 stainless steel, aluminum, polypropylene, PVDF, and carbon-filled acetal to satisfy temperature and chemical-compatibility concerns.