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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® 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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6 mm (1/4") Accu-Flo™ Clamped Metal Pump A.025

AIR INLET
  • 1/8" FNPT
LIQUID INLET
  • 6 mm (1/4")
LIQUID DISCHARGE
  • 6 mm (1/4")
CONNECTION TYPE
  • NPT/BSPT (Threaded)
MAX SUCTION LIFT CAPABILITY
  • Rubber – 4.49 m (14.7') Dry, 9.33 m (30.6') Wet
  • PTFE – 3.80 m (12.5') Dry, 9.33 m (30.6') Wet
MAX FLOW RATE
  • Rubber – 15.5 lpm (4.1 gpm)
  • PTFE – 15.1 lpm (4 gpm)
MAX PRESSURE
  • 8.6 bar (125 psi)
MAX DIAMETER SOLIDS
  • 0.4 mm (1/64'')
DISPLACEMENT PER STROKE *
  • Rubber – 0.02 L (0.005 gal)
  • PTFE – 0.02 L (0.005 gal)
  • * 1 cycle = 2 strokes
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Features and Benefits

Accu-Flo™ Series Air-Operated Double-Diaphragm (AODD) Pumps give you the critical external pump control necessary for exacting applications such as batching. Featuring a direct electrical interface that utilizes electrical impulses to stroke the pump instead of differential pressure, the Accu-Flo Series provides a variable stroke rate that you can easily control as needed. To meet your applications, Accu-Flo Series pumps are available as NEMA 5-compliant and come in a variety of voltage options.
  • Integrated electronic (solenoid) control
  • Multiple signal input voltage options: 24V DC, 12V DC and 110V AC
    • Proven, robust clamped construction

Performance and Specifications

Dimensions

Dim-XA.025T-Metal-T-SeriesCenterSection

Note: Dimensions vary by material and connection. For additional information, please refer to the A.025 Metal Manual.

Flow Curve – Rubber-Fitted

dim-a025p-metal-rubber-fitted

Note: Additional performance curves can be found in the A.025 Metal Manual.

AIR INLET
  • 1/8" FNPT
LIQUID INLET
  • 6 mm (1/4")
LIQUID DISCHARGE
  • 6 mm (1/4")
CONNECTION TYPE
  • NPT/BSPT (Threaded)
MAX FLOW RATE
  • Rubber – 15.5 lpm (4.1 gpm)
  • PTFE – 15.1 lpm (4 gpm)
MAX PRESSURE
  • 8.6 bar (125 psi)
MAX DIAMETER SOLIDS
  • 0.4 mm (1/64'')
MAX SUCTION LIFT CAPABILITY
  • Rubber – 4.49 m (14.7') Dry, 9.33 m (30.6') Wet
  • PTFE – 3.80 m (12.5') Dry, 9.33 m (30.6') Wet
DISPLACEMENT PER STROKE *
  • Rubber – 0.02 L (0.005 gal)
  • PTFE – 0.02 L (0.005 gal)
  • * 1 cycle = 2 strokes

Wetted Housings 

Material Ship Weight
Aluminum 2 kg (5 lb)
Stainless Steel 5 kg (11 lb)

Non-Wetted Housings

Description Material
Center Section Acetal, Polypropylene
Air Valve Acetal, Polypropylene

Elastomer Options

Material Temperature Limits
Buna-N -12°C to 82°C (10°F to 180°F)
FKM -40°C to 177°C (-40°F to 350°F)
Neoprene -18°C to 93°C (0°F to 200°F)
PTFE* 4°C to 104°C (40°F to 220°F)
Wil-Flex™ -40°C to 107°C (-40°F to 225°F)

* 4°C to 149°C (40°F to 300°F) - 13 mm (1/2") and 25 mm (1") models only