HDF2 Metallic 2" (50 mm) AODD – Flap Valve Pump


    The SANDPIPER 2" heavy-duty flap valve pump has a proven design that solves the most common challenges in sump applications, mine dewatering and any liquid application involving solids.

    This metallic air-operated double-diaphragm (AODD) pump is recommended for abrasive slurries, suspended and non-suspended solids and line-size solids. It is configured with bottom discharge porting to prevent settling solids from shortening pump life and provide superior suction lift.

    HDF2 pumps are thick-wall constructed of sand-casted aluminum, cast iron and stainless steel with elastomer and TPE (thermoplastic elastomer) diaphragms and check valves.

    HDF2 Features

    • Port size: 2" NPT/BSP
    • Capacity: 0 to 208 gpm (787 lpm)
    • Suction lifts: up to 24 ft
    • Air distribution valve: no-lube, no-stall externally serviceable air distribution system (ESADS+) design
    • Solids handling: up to 2" (50 mm)
    • Heads: up to 125 psi or 289 ft of water (8.6 bar or 88 meters)
    • Max operating pressure: 125 psi (8.6 bar)

    The HDF2 pump has been optimized for performance as part of the SANDPIPER Evolution portfolio improvement. This efficient pump experienced a 49% flow rate increase, with a new maximum flow rate of up to 208 gpm (788 lpm).

    Performance Guarantees

    ATEX CE logo ABS logo ISO Logo EAC SP Evolution logo


    Port Size 2" NPT
    Capacity 0 to 208 gpm (787 lpm)
    Air Distribution Valve No-lube, no-stall design
    Solids-Handling Up to 2" (50 mm)
    Heads Up To 125 psi or 289 ft of water (8.6 bar or 88 meters)
    Displacement/Stroke 0.47 gallons (1.8 liters)
    Max Operating Pressure 125 psi (8.6 bar)
    Shipping Weight
    Cast Iron
    Stainless Steel

    86 lbs (39 kg)
    168 lbs (76 kg)
    168 lbs (76 kg)





    HDF2 CAD File

    SANDPIPER can provide you with a CAD file to save time and improve the quality of your final design, as well as reduce measurement and documentation packet errors. Contact us today to request yours.


    Let’s Discuss Your Project

    You have complex industrial challenges and we have problem-solving expertise to find the solutions that fit your needs. When you schedule a consultation with SANDPIPER, we will:

    • Have a conversation about the challenges you’re facing
    • Tell you about other customers we’ve worked with and give you data that proves the effectiveness of our pumps
    • Set up an in-person meeting if warranted
    • Find the products that will perfectly match your application requirements

    Scheduling a consultation will give you the information you need to make a decision about selecting an AODD pump manufacturer you can partner with who will provide safe, reliable and energy-efficient solutions. Fill out the form to schedule your consultation.

    Find a Distributor

    SANDPIPER AODD pumps deliver industry-leading durability and performance. We offer the broadest range of products for a wide variety of applications. Contact a local distributor to find a SANDPIPER pumping solution that’s backed by superior quality and workmanship.

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