Description
Sulzer Centrifugal Between bearing pumps ZPP double suction, axially split single-stage centrifugal pump – High performance for demanding industrial applications
Key Technical Specifications:
Capacities | up to 25’000 m3/h / 110’000 USgpm |
Heads | up to 160 m / 525 ft. |
Pressures | up to 20 bar / 290 psi |
Temperatures | up to 120°C / 250°F |
Discharge sizes | from 250 mm / 10 in to 900 mm / 35 in |
Maximum speed of rotation | up to 3000 rpm |
Why Choose Sulzer ZPP Double-Suction Pump?
The Sulzer ZPP is a robust , axially split , single-stage , double-suction centrifugal pump engineered for high-capacity fluid transport. It is purpose-built for demanding applications where high reliability , hydraulic efficiency , and simplified maintenance are critical. Designed to meet API 610 and ISO 13709 (BB1) standards , ZPP is ideal for use in power generation , water transmission , and industrial processes requiring large flow rates with minimal downtime.
Key Technical Specifications
Pump Type: Between-bearings , axially split , single-stage centrifugal pump
Impeller Type: Double-suction , enclosed , dynamically balanced
Casing Design: Axially split volute casing for top/bottom suction and discharge nozzle configurations
Standards Compliance: API 610 (BB1) , ISO 5199 / ISO 13709
Materials of Construction:
– Casing: Cast iron , ductile iron , carbon steel , stainless steel
– Impeller: Bronze , stainless steel , duplex
– Shaft: High-strength stainless steel with protective sleeves
Bearings: Sleeve or rolling-element type, grease or oil lubricated
Seal Options: Wide range of mechanical seals and API sealing plans
Design & Functionality
Axially split casing simplifies access to rotor and internal components
Double-suction impeller design balances axial thrust and increases efficiency
Rigid shaft design ensures minimal deflection at high loads
Optional wear rings and replaceable shaft sleeves extend service life
Horizontal or vertical mounting options available
Typical Applications
Cooling water circulation in thermal and nuclear power plants
Large-scale water transmission and distribution
Desalination plants (intake , feed , or transfer)
Refinery and petrochemical utility services
Pulp and paper mill water systems
Additional Features
Energy-efficient hydraulics reduce total cost of ownership
Compact footprint and baseplate options simplify system layout
Long service intervals due to rugged bearing and seal design
Easily adaptable to different piping configurations
Designed for continuous-duty operation in mission-critical systems