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Other APP Accessories

Other APP Accessories

Danfoss APP Pump Accessories – Motors, Couplings, Filters, and Drive Components

This category covers every drive-train and auxiliary component required to operate a Danfoss APP, APP-S, or APP-W axial piston pump in seawater reverse osmosis and industrial reverse-osmosis service. ForeverPure stocks genuine Danfoss OEM parts from our U.S. warehouse for fast delivery to desalination plant operators, system integrators, and OEM skid builders.

Categories in this section

  • Drive couplings – Softex elastomer couplings with aluminum bell housings, sized IEC71 through IEC225 and NEMA 254TC through 286TC.
  • Electric motors – Danfoss-branded IE3 premium-efficiency motors, 2- and 4-pole, 3-phase 230/400V or 400/690V at 50 Hz, with insulated NDE bearings for VFD duty.
  • Base frames and mounting kits – machined steel pump/motor bases ready for field alignment.
  • Filter housings and elements – pre-filtration cartridges rated 5 µm or 10 µm nominal, protecting APP pump internals from feedwater debris.
  • APP monitoring kits – pressure, temperature, and leak-detection sensors for APP pumps with ceramic internals.

Frequently Asked Questions

How do I select the correct IEC adapter for my Danfoss pump?
Match the IEC motor frame size (71, 80, 90, 100/112, 132, 160, 180, 225) to the housing diameter and the APP or PAH pump series. Our product names include this information – e.g., "IEC132 to PAH 2–12.5 Ø300mm" fits a 132-frame IEC motor to a PAH 2, 4, 6.3, 10, or 12.5 pump with a 300 mm bell housing.

Can I use a generic 3-phase motor in place of the Danfoss motor?
Yes, any IE3-compliant IEC or NEMA motor with the correct frame size, power rating, and shaft will work. Danfoss-branded motors are pre-qualified for VFD operation and carry insulated NDE bearings to prevent shaft-current damage.

Do coupling kits include the motor-side flange?
Yes – our Danfoss coupling kits ship with the bell housing, motor-side and pump-side coupling halves, Softex elastomer insert, and mounting hardware.

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