Condensate recovery pumps operate in demanding conditions, handling hot condensate at or near saturation temperature, often with flash steam present. This makes them susceptible to cavitation, seal failure, and accelerated wear compared to standard centrifugal pumps.
AQ Process Systems sources and exports the full range of replacement parts for both electric centrifugal condensate pumps and pressure-powered (steam-driven) condensate recovery units. We stock impellers, mechanical seals, wear rings, shafts, bearings, and complete motor assemblies for rapid turnaround.
For pressure-powered pumps (PPPs), we supply float mechanisms, pilot valves, check valves, and body gaskets, the key maintenance items that ensure reliable automatic operation without electrical power.
| Component | Specification | Description |
|---|---|---|
| Rotating Components | ||
| Impellers | SS 316, duplex, bronze | Open or closed type | Replacement pump impellers, matched to original diameter, vane profile, and material for correct head and flow. |
| Wear Rings | SS or bronze | Casing and impeller rings | Casing wear rings and impeller wear rings, maintaining running clearances and pump efficiency. |
| Pump Shafts | SS 316 or 17-4PH | Ground and polished | Precision-ground pump shafts with keyways, sleeve seats, and coupling fits machined to OEM tolerances. |
| Shaft Sleeves | SS 316 or ceramic-coated | Seal area protection | Replaceable shaft sleeves protecting the shaft at the mechanical seal and packing locations. |
| Seals & Packing | ||
| Mechanical Seals | SiC/SiC, Carbon/SiC | Single or double | Hot condensate duty | Mechanical shaft seals rated for high-temperature condensate service, single, double, or cartridge types. |
| Seal Support Systems | Quench, flush, or cooling plans | API 682 plans | Seal piping plans, quench (Plan 62), flush (Plan 11/13), or external cooling for high-temperature service. |
| Gland Packing | Graphite/PTFE | For packed pumps | Shaft packing sets for older packed-gland condensate pumps, graphite, PTFE, or combination packing. |
| Bearings & Drive | ||
| Bearings | Deep groove ball, angular contact | Radial and thrust | Pump bearing sets, radial (deep groove ball) and thrust (angular contact) bearings with correct fits. |
| Couplings | Flexible jaw, grid, or spacer type | Pump-motor coupling assemblies, flexible jaw (Lovejoy type), grid, or spacer couplings with elements. |
| Motors | TEFC | IE3/IE4 | Various kW ratings | Replacement drive motors, TEFC enclosure, premium efficiency, matched to pump frame and speed. |
| Pressure-Powered Pump Parts | ||
| Float Mechanisms | SS float ball and lever | Various sizes | Float assemblies for pressure-powered condensate pumps, triggering the fill/discharge cycle automatically. |
| Pilot Valves | Steam pilot valve | SS trim | Pilot valves controlling motive steam admission to the pressure-powered pump body. |
| Check Valves (Inlet/Outlet) | Swing or piston type | SS or bronze | Non-return valves on pump inlet and outlet, preventing backflow during the pump cycle. |
| Body Gaskets & Seals | Spiral wound or graphite | High-temperature rated | Cover gaskets, float chamber gaskets, and body seals, replaced during every maintenance opening. |
Parts are matched to OEM material specifications and dimensional tolerances. Please provide the equipment manufacturer, model number, and serial number (if available) for precise part identification.
The most frequently replaced parts are mechanical seals (the primary wear item in electric condensate pumps), wear rings (erosion from hot condensate), bearings (heat and load degradation), impellers (cavitation damage and erosion), and couplings (misalignment wear). For pressure-powered pumps, float mechanisms and pilot valves are the main maintenance items.
Condensate pumps handle fluid at or near saturation temperature, causing flash steam at the seal faces. This creates dry running, thermal shock, and rapid face wear. Using silicon carbide (SiC/SiC) seal faces rated for high-temperature service, combined with proper seal flush or quench piping (API Plan 62), significantly extends seal life.
Yes. We supply float mechanisms, pilot valves, check valves, body gaskets, and strainer screens for pressure-powered (steam-driven) condensate recovery pumps from Spirax Sarco, TLV, Armstrong, and Forbes Marshall. These pumps use no electricity, motive steam drives the condensate discharge.
Electric condensate pumps use a motor-driven centrifugal impeller and are suitable for continuous, high-flow applications. Pressure-powered pumps use motive steam to push condensate, they are preferred where electricity is unavailable, in hazardous areas, or for gravity-draining applications. Spares for electric pumps focus on seals, impellers, and motors; PPP spares focus on floats, pilots, and check valves.
Yes. We supply OEM-compatible replacement parts for all major condensate pump manufacturers including Spirax Sarco (MFP14/16 pressure-powered pumps), TLV (SS1/PowerTrap series), Armstrong (PPT series), Forbes Marshall, Grundfos, and KSB condensate duty pumps.
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