FLYGT High-Durability Stainless Steel Volute Casing for Industrial Submersible Pump Parts

Our proprietary brand delivers complete technical solutions in fluid machinery and engineering. Our services span industrial control and drive equipment, mechanical seals, and international field engineering operations.

Backed by our portfolio of specialized technologies and product lines, we offer clients high-level technical consultation, commercial support, and integrated product solutions — covering pumps, frequency converters, servo drives, PLC-HMI, industrial control cabinets, motors, mechanical seals and assemblies, couplings, gearboxes, and comprehensive engineering services (overseas on-site 3D scanning reverse molding of pump replacement parts and equipment debugging by our dispatched engineers abroad).

FLYGT Volute Casing is the pressure-containing housing of a centrifugal submersible pump — the stationary component that surrounds the impeller and converts kinetic energy from the rotating impeller into pressure energy in the fluid stream. The volute's spiral-shaped channel gradually increases in cross-sectional area from the impeller discharge to the pump's discharge nozzle, efficiently directing flow toward the outlet while minimizing hydraulic losses.

As the outermost pressure boundary of the pump, the volute casing must withstand system pressure, resist erosion from solids-carrying sewage, and maintain dimensional stability at varying temperatures. Our replacement volute casings are reverse-engineered using FARO 3D laser scanning and produced through precision casting and CNC machining to ensure perfect interchangeability with FLYGT originals.

Standard materials include cast iron for standard sewage applications, and duplex stainless steel or special alloys for corrosive and high-pressure operating conditions.

• Precision Reverse-Engineering — FARO 3D laser scanning captures complex volute geometry including spiral profile, volute tongue, and discharge flange to ±0.05mm accuracy; no original drawings needed
• Hydraulic Performance Match — CFD simulation validates volute geometry against OEM hydraulic performance curves; ensures equivalent head and efficiency characteristics
• Full Material Range — Cast iron, duplex stainless steel, alloy steel, and special alloys available for different pressure ratings and media conditions
• Hydrostatic Pressure Tested — Every casing pressure-tested to 1.5× rated working pressure before despatch
• NDT Verified — RT, UT, MT, and PT inspection on all castings to detect internal and surface defects
• Custom Coatings Available — Anti-corrosion coatings including epoxy, ceramic, and special wet-part coatings developed with Chinese Academy of Sciences

Volute casings are produced through a precision casting and machining workflow: