SA1 and SA25 Metallic 1" (25 mm) AODD – Flap Valve Pump


    The SANDPIPER 1" SA1 flap valve AODD pump is exclusively designed to fit into tight spaces. Its unique flap check valve design is ideal for pumping fluids containing solids that would clog typical ball valve pumps.

    The check valves are contained in external manifolds for quick and easy servicing (see below). The pump is available with NPT or BSP threaded connections.

    SA1 Benefits

    SA1 heavy-duty flap valve AODD pumps are:

    • Recommended for abrasive slurries, suspended and non-suspended solids and line-size solids.
    • Are configured with bottom discharge porting to prevent settling solids from shortening pump life and provide superior suction lift.
    • Are thick-wall constructed of sand-casted aluminum, cast iron and stainless steel with elastomer and TPE (thermoplastic elastomer) diaphragms and check valves. See tabs below for a complete description.

    SA1 Has Externally Serviceable Air Distribution System

    When dirty air enters an AODD pump, it will require frequent servicing of the air distribution system. SANDPIPER is the only AODD pump manufacturer to offer an externally serviceable air distribution system (ESADS+), which allows complete access to the main air and pilot valves without removing the pump from service. Repair or clean in five minutes (versus 55 minutes for competitors), reducing your downtime by as much as 90%.


    Chemical Compatibility Guide

    To determine chemical compatibility with this pump, please refer to our Chemical Compatibility Guide.

    ATEX CE logo EAC ISO Logo


    Port Size

    1" NPT
    1" BSP (Tapered)
    Capacity 0 to 42 gpm (159 lpm)
    Air Distribution Valve No-lube, no-stall design
    Solids-Handling Up to 1" (25.4 mm)
    Heads Up To 125 psi or 289 ft. of water (8.6 bar or 88 meters)
    Displacement/Stroke .10 gallons (.38 liters)
    Max Operating Pressure 125 psi (8.6 bar)
    Shipping Weight
    Cast Iron
    Stainless Steel

    48 lbs (21 kg)
    76 lbs (34 kg)
    79 lbs (36 kg)


    SA1 metallic performance chart


    SA1 & SA25 CAD Files

    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.

    Find One Now →