WMA2 Two Stage, Rigidly Coupled, Vertical In-line, Low-Flow, High-Head Process Pump

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Flowserve WMA2 Two-Stage Vertical In-Line Rigidly Coupled OH4 Process Pump for High Head Industrial Services

Introduction Features Literature

Flowserve WMA2 Two-Stage Vertical In-Line Rigidly Coupled OH4 Process Pump for High Head Industrial ServicesWMA2 Two Stage, Rigidly Coupled, Vertical In-line, Low-Flow, High-Head Process Pump

Brand: IDP
Description:

The Flowserve WMA2 is a two-stage, rigidly coupled vertical in-line pump engineered to meet API 610 OH4 standards. Like the HWMA2 model, it is specifically designed for low-flow, high-head applications where space is limited and reliability is critical. With its compact vertical footprint, robust shaft design and precision-balanced hydraulics, the WMA2 offers efficient performance and ease of maintenance in demanding refinery, chemical, and industrial process environments.

The WMA2 is a two stage rigidly coupled pump designed to comply with API requirements for OH4 pumps. Like the HWMA2 pump, the high head hydraulics of the WMA2 are achieved using back-to-back, radial blade impellers and 2-pole P-base motors without high speed gear boxes.

WMA2 Applications

Distillation (oil and gas), Solvents, Drilling and Production, Water Supply and Treatment (oil and gas), FPSO, Water and CO2 Injection, Gas Treating and Sulfur Recovery, Gas to Liquids, Heat Transfer Fluids, Heavy Oil, Oil Sands and Shale, Acid Transfer, Hydrocracking, Boiler Feed Booster, Hydrotreating, Catalytic Cracking, Industrial Gases, Caustic and Chlor-alkali, LNG, Chemical and Liquor (pulp and paper), Leaching Acid, Cooling Water (power), Crude, Product and CO2 Pipeline, Plating, Galvanizing and Other Coatings, Residuum and Heavy Oil Upgrading, Digester, Volatile Organic Compounds

  • Industries:
    Chemical Processing, Power Generation, Oil and Gas, General Industries
  • Standards:
    API682, API610

Replaceable Volute Insert permits precise hydraulic customization. Each insert is engineered for specified head and flow requirements. Accommodates future system changes.

Rigid Coupling ensures precision shaft alignment, thus eliminating time-consuming manual alignment.

Casing and Cover feature metal-to-metal fits with fully confined, controlled compression gasket to ensure proper sealing and alignment.

Raised Face Flanges are to ASME B16.5, Class 300 for one stage and Class 600 for two stage models.

ISO 21049/API 682 Seal Chamber accommodates a wide variety of seal configurations including dual pressurized and unpressurized cartridge types for the most severe services.

Stiff Shaft Design limits deflection at seal faces to 0.05 mm (0.002 in) max. Vibration levels are well below that required by ISO 13709/API 610.

Operating Parameters

  • Flows to 45 m3/h (200 gpm)
  • Heads to 440 m (1445 ft)
  • Pressures to 60 bar (850 psi)
  • Temperatures to 260°C (525°F)

WMA2 centrifugal pumps User Instructions

HWMA Pump Bulletin

Need compact pumping power for low flow and high head conditions? The WMA2 delivers OH4 reliability in vertical in-line form. Let’s configure the WMA2 to match your exact service needs.