Wilden Products

Durability, Reliability and Cost Savings

Not only are Wilden pumps the most cost-effective, reliable and energy-efficient solutions available, but our state-of-the-art air distribution systems (ADS) significantly increase positive displacement pump productivity by reducing air consumption and maintenance for the most energy-efficient AODD pump operation possible.

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Wilden Markets

Wilden® solves pumping challenges across the spectrum

Wilden® positive displacement air-operated double-diaphragm (AODD) pump solutions are leading the way in a host of industries and applications.

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Wilden Support

The Wilden World of Service and Support - Assistance Beyond Expectations

Wilden® is always ready to assist with technical support for Wilden AODD pumps, parts or accessories.

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Equalizer® Surge Dampeners - SD Series (SD)

Wilden® Equalizer® Surge Dampeners - SD Series (SD) for air-operated double-diaphragm (AODD) pumps effectively suppress pulsation associated with reciprocating pumps to prolong equipment life and maximizing Mean Time Between Repair (MTBR). The SD Series surge dampener self-adjusts to fluctuating inlet pressures making the installation flexible, versatile, and user friendly for a variety of processes. These dampeners are engineered for demanding solids-handling applications commonly found where reciprocating pumps excel.

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Features and Benefits

  • Effectively dampens up to 70% of discharge pressure fluctuation
  • Protects against water hammer and associated damage
  • Utilizes the same wear components as Wilden diaphragm pumps
  • Self-adjusting to varying system pressures
  • Large-solids capacity
  • Can be configured to meet ATEX II 2 GD X requirements


Pump Model Sizes
Threaded (NPT and BSPT) 13 mm (1/2”) 25 mm (1”) 51 mm (2”) 76 mm (3”)
Flanged (ANSI and DIN) - - 51 mm (2”) -
Wetted Materials Aluminum, Stainless Steel, Ductile Iron, Polypropylene, PVDF
Non-Wetted Materials Aluminum, Nickel-Plated Aluminum, Stainless Steel, Polypropylene, Glass-filled Polypropylene



Model: Surge Dampener | Code: WIL-19010-E-04
Model: Surge Dampener | Code: WIL-19011-E-07