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.

View Our Products

Specialty Series

View All

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.

View Our Markets

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.

View Our Support Options
A2_metal

25 mm (1") Accu-Flo™ Clamped Metal PumpA2

AIR INLET
  • 1/4" FNPT
LIQUID INLET
  • 25 mm (1")
LIQUID DISCHARGE
  • 25 mm (1")
CONNECTION TYPE
  • NPT/BSPT (Threaded)
MAX SUCTION LIFT CAPABILITY
  • Rubber – 7.43 m (24.4') Dry, 9.7 m (31.8') Wet
  • PTFE – 6.55 m (21.5') Dry, 9 m (29.5') Wet
MAX FLOW RATE
  • Rubber – 129 lpm (34 gpm)
  • PTFE – 121 lpm (32 gpm)
MAX PRESSURE
  • 8.6 bar (125 psi)
MAX DIAMETER SOLIDS
  • 3.2 mm (1/8'')
DISPLACEMENT PER STROKE *
  • Rubber – 0.35 L (0.092 gal)
  • PTFE – 0.20 L (0.054 gal)
  • * 1 cycle = 2 strokes
ce_logo

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 comes 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-A2-25mm1inAccu-Flo_CMP

Note: Dimensions vary by material and connection. For additional information, please refer to the A2 Metal Manual.

Flow Curve – Rubber-Fitted

flo-a2p-metal-rubber-fitted

Note: Additional performance curves can be found in the A2 Metal Manual.

AIR INLET
  • 1/4" FNPT
LIQUID INLET
  • 25 mm (1")
LIQUID DISCHARGE
  • 25 mm (1")
CONNECTION TYPE
  • NPT/BSPT (Threaded)
MAX FLOW RATE
  • Rubber – 129 lpm (34 gpm)
  • PTFE – 121 lpm (32 gpm)
MAX PRESSURE
  • 8.6 bar (125 psi)
MAX DIAMETER SOLIDS
  • 3.2 mm (1/8'')
MAX SUCTION LIFT CAPABILITY
  • Rubber – 7.43 m (24.4') Dry, 9.7 m (31.8') Wet
  • PTFE – 6.55 m (21.5') Dry, 9 m (29.5') Wet
DISPLACEMENT PER STROKE *
  • Rubber – 0.35 L (0.092 gal)
  • PTFE – 0.20 L (0.054 gal)
  • * 1 cycle = 2 strokes

Wetted Housings 

Material Ship Weight
Aluminum 12 kg (26 lb)
Stainless Steel
16 kg (36 lb)
Alloy C 18 kg (40 lb)

Non-Wetted Housings

Description Material
Center Section Aluminum, PTFE-coated Aluminum, Nickel-plated Aluminum, Polypropylene
Air Valve Aluminum, Acetal, Polypropylene, UHMW PE

Elastomer Options

Material Temperature Limits
Buna-N -12°C to 82°C (10°F to 180°F)
EPDM -51°C to 138°C (-60°F to 280°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)
Polyurethane
-12°C to 66°C (10°F to 150°F)
Saniflex™
-29°C to 104°C (-20°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