Fsy Vertical Frp Fiberglass Submerged Centrifugal Pump

Vertical immersible centrifugal pumps constructed from fiberglass-reinforced phenolic (FRP) materials for corrosion-resistant handling of aggressive liquids. Available in two styles: the FSY vertical FRP submerged centrifugal pump (radial/centrifugal impeller) and the WSY vertical FRP submerged vortex pump (vortex-style impeller). Both designs are intended for permanent immersion in tanks or pits and operate reliably when the liquid level is above the pump body.

Key features

• Wet parts made entirely from phenolic-modified fiberglass (high-temperature molding phenolic FRP): impeller, casing, connecting tube and fluid passages are FRP; no metal contacts the pumped fluid.
• Corrosion resistance: suitable for many oxidizing acids and other corrosive liquids where stainless or exotic-metal pumps would be considered.
• Lightweight and high strength: FRP construction delivers low weight, good dimensional stability and heat resistance.
• Immersion depth: designed for submerged installation with typical immersion depths from 800 mm to 3,000 mm.
• Self-priming in tank service: will operate without separate priming provided the liquid level remains above the pump body.
• Leak control: flat cover plate includes a leakage hole to prevent tank leakage issues.
• Drive and rotation: direct-driven by motor via a claw-type elastic coupling; rotation is clockwise looking from the motor end.

Operating limits and suitable fluids

• Maximum liquid temperature: up to 100 °C.
• Suitable for corrosive acids and many chemical liquids (examples: hydrochloric acid, dilute sulfuric acid, formic acid, acetic acid, butyric acid) provided the fluid does not contain abrasive or suspended solids and is not prone to crystallization.
• Not recommended for slurries or liquids with significant solid particles or for fluids that readily crystallize or polymerize in the pump.

Typical applications

• Chemical processing, petrochemical and refining plants
• Dye and pigment manufacturing
• Pesticide and pharmaceutical production
• Fertilizer and rare-earth processing

Selection and ordering information

When specifying or ordering, provide: pump type (FSY centrifugal or WSY vortex), required flow rate (m3/h), total head (m), liquid temperature, chemical composition and concentration, immersion depth, motor power and speed (rpm), connection sizes, and any site-specific constraints (tank dimensions, mounting). This information allows correct sizing and material verification for your corrosive-service application.

Maintenance notes

• Periodically inspect the elastic coupling and motor alignment.
• Check the leakage/drain hole and cover plate for blockage.
• Monitor for any unusual vibration or flow reduction, and confirm liquid properties remain within specified limits (no solids, no crystallization).