ZW Horizontal Split Case Pump

Horizontal, axially split case pump (BB1)

ZW pump - horizontal, single stage, split case pump
ZW pump - horizontal, single stage, split case pump
ZW pump - horizontal, single stage, split case pump sectional
The ZW pump is a horizontal, single stage, axially split case centrifugal pump designed and built acording to the Hydraulic Institute (HI) standard (BB1 type). It is part of the HS/ZW range of split case pumps by Ruhrpumpen which includes the: HSC, HSD, HSL, HSR, and HSM models.

Operation limits

Capacity up to 9,000 m³/h (34,400 gpm)
Head up to 340 m (1,115 ft)
Maximum Pressure up to 98 bar (1,421 psi)
Temperature up to 120 °C (248 °F)
Applications Petrochemical, general industry applications, power generation plants, municipal water systems, mining operations, fire protection service.
Pump Selection Spare Parts Contact RP Back to Between Bearing Pumps

Overview

CHARACTERISTICS AND DESIGN FEATURES

Horizontal, between bearings, single stage, axially split centrifugal pump. Its innovative design allows a more compact installation and ensures perfect alignment.

  • Hydraulic Institute (HI) design - BB1 type*
  • High efficiency, foot mounted design
  • Axially split case, single- and double- volute design minimizes thrust loads and allows operation in a wide range of capacities
  • Flanged connections
  • Side-side nozzle configuration
  • Double suction, enclosed impellers provide hydraulic balance eliminating axial thrust
  • Clockwise or counterclockwise rotation
  • Grease or oil lubricated bearings
  • Stuffing box configured for packing or mechanical seal
  • Renewable wear rings
  • Horizontal or vertical mounting arrangements are available

*For API build, check the ZM pump range

STANDARD CONSTRUCTION MATERIALS
  • Cast iron

Other materials available upon request

APPLICATIONS
Pump for safe drinking water

The ZW is NSF ANSI 61/372 compliant and adheres to the latest lead-free requirements of the U.S. Safe Drinking Water Act.

Pumping of pure, raw and wastewater, as well as seawater:

  • Cooling towers
  • Circulating water
  • Raw water transfer
  • High and low water lift
  • Water pipelines
  • Dewatering
  • Irrigation
  • Desalination
  • Cargo loading and unloading
  • Fire protection systems (See split case fire pump)

Pump Performance Chart

Pump curve for RP's axially split case pumps: HSC, HSD, HSL, HSR, HSM, ZW

Ruhrpumpen axially split case pumps performance chart

Downloads

Axially Split Case Pumps Brochure Download pdf HS/ZW - Axially Split Case Pumps Brochure - EN (1.61 MB)

Other Pumps
HSC - horizontal, axially split case pump HSC Split Case Pump
HSD horizontal split case pump HSD Split Case Pump
HSR pump by Ruhrpumpen single stage horizontal split case pump HSR Split Case Pump
hsm-pump HSM Multi-Stage Split Case Pump
Horizontal split case fire pump by Ruhrpumpen Split Case Fire Pump