HDB2 and HDB50 Metallic 2" (50 mm) AODD – Ball Valve Pump


    The exclusive SANDPIPER 2" HDB2 Evolution Heavy-Duty Ball Pump is a mainstay in challenging customer applications, moving thin-highly viscous and small, solids-laden fluids.

    The 2" metallic pump provides excellent durability in demanding applications and is designed to withstand the most rugged and harsh ball valve environments.

    The HDB2 is available in top- and down-porting options, which make installation easy and optimize performance on the pumped fluid. These porting configurations solve critical problems, such as solids and abrasives settling out of the liquid chamber into the ball check area. They are designed to outlast standard pumps.

    SANDPIPER Heavy-Duty Ball Pump Features

    These pumps are enhanced with extended-wear packages and are your optimal solution for abrasive-slurry applications. Features include:

    • Top-port option: For fluids containing floating solids, suspended solids or entrained gases. The discharge port is positioned above the center of the pump for easier evacuation and less build-up of solid material or gases.
    • Down-port option: For fluids containing settling solids. The discharge port is positioned below the center of the pump so solids settle in the elbow and are discharged. This helps reduce wear on the diaphragms and associated components.


    • Heavy-duty plunger bushings and actuator pins: Designed to withstand severe applications
    • Diaphragm wear pads: Installed between the diaphragm and outer diaphragm plate, providing a secondary wear surface that extends the life of the diaphragm
    • Thicker, more robust wetted castings: Provide extended wear resistance
    • Heavy-duty weighted check valve balls: Are 30-60% heavier than solid rubber check balls, allowing for more consistent chamber filling

    Performance Guarantees

    Chemical Compatibility Guide

    Please visit the Chemical Compatibility Guide for all configuration and material compatibility options.

    A SANDPIPER Exclusive: Externally Serviceable Air Distribution System

    SANDPIPER is the only AODD pump manufacturer to offer 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%.

    What is Evolution Optimized Performance?

    These pumps have undergone an engineering EVOLUTION, leveraging trusted and proven product designs to improve their performance by using advanced engineering methods. Optimize performance without sacrificing proven reliability.

    ATEX CE logo ABS logo ISO Logo EAC SP Evolution logo
    SP Signature Series
    HDB2 Top Ported Metallic 2" AODD Ball Valve Pump
    HDB2 Bottom Ported 2" AODD ball valve pump




    Port Size

    2" NPT
    2" BSP
    Capacity 0 to 135 gpm (511 lpm)
    Air Distribution Valve No-lube, no-stall design
    Solids-Handling Up to .375" (9 mm)
    Heads Up To 125 psi or 289 ft of water (8.6 bar or 88 meters)
    Displacement/Stroke .46 gallons (1.7 liters)
    Max Operating Pressure 125 psi (8.6 bar)
    Shipping Weight
    Top Ported Aluminum
    Top Ported Cast Iron
    Top Ported Stainless Steel
    Bottom Ported Aluminum
    Bottom Ported Cast Iron
    Bottom Ported Stainless Steel

    88 lbs (40 kg)
    166 lbs (75 kg)
    179 lbs (81 kg)
    95 lbs (43 kg)
    172 lbs (78 kg)
    186 lbs (84 kg)





    HDB2 & HDB50 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.


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    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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