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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Saniflo Hygienic Series Equalizer Surge Dampener

Equalizer® Surge Dampeners - Saniflo™ Hygienic™ Series (HS)

Wilden® Equalizer® Surge Dampeners - Saniflo™ Hygienic™ Series (HS) minimize unwanted pressure fluctuations by providing a supplementary pumping action to virtually eliminate pressure variation and pulsation on air-operated double-diaphragm (AODD) pumps. The equalizer automatically sets and maintains the correct air pressure matching the variations in liquid flow or discharge pressure generated by the pump.

Ideal for demanding solids-handling applications commonly found in the sanitary and food industries, the Saniflo HS surge dampeners can handle up to 76 mm (3”) compressible solids, and they meet FDA and USP Class VI standards when configured with PTFE integral-piston diaphragms. They also meet ATEX requirements for use in explosive environments.

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Features and Benefits

  • Effectively dampens up to 70% of discharge pressure fluctuation
  • Prevents water hammer and associated damage
  • Self-adjusting to varying system pressures
  • Large-solids capacity
  • Clean-in place (CIP) capable
  • Liquid-chamber design for superior delicate product handling, drainability and extended diaphragm life
  • Surface finish of Ra 0.8 μm (32 μ-in) or better for optimum cleanability


Pump Model Sizes
Tri-Clamp Connection 38 mm (1-1/2”) 51 mm (2”) 76 mm (3”)
Wetted Materials 316L Stainless Steel
Non-Wetted Materials Aluminum, Nickel-Plated Aluminum, Stainless Steel