Main applications cpkn-sx

  • Advanced treatment / 3.stage
  • Auxiliary Systems
  • Energy
  • Fire fighting and sprinkler systems
  • Industry engineering
  • Nuclear Power Stations

Technical data

  • Q max 468.0 m³/h
  • H max 163.0 m

Design cpkn-sx

Horizontal, long-coupled, single-stage volute casing pump in back pull-out design. Replaceable shaft protecting sleeves and casing wear rings.

Application pump cpkn-sx

Sprinkler systems to VdS and fire protection.

Casing pump cpkn-sx

Radially split, consisting of volute casing (on CPKN-S with casing wear ring) and casing cover.

Double volute depending on pump size.

The casing cover and the bearing bracket lantern form a chamber which can be used for heating or cooling with superheated steam or water,  respectively (except for pump design with conical seal chamber).

Desing Details pump cpkn-sx

Shaft Seal

The shaft seal can be designed as a gland packing or a mechanical seal.

Conversion from gland packing to single-acting mechanical seal and vice versa is possiblewithout any rework on the casing cover by using the relevant replacement parts.

The pumps use proprietary single or double seals. Preference is given to standardised mechanical seals of various makes to EN 12756 (type of construction L1K).

Single-acting mechanical seals can be fed with quenching media. A throttling bush, shaft seal ring or secondary mechanical seal can be fitted as outboard seal.

Overview of technical data cpkn sx

Q (50Hz)82.0 – 468.0 (m³/h)
H (50Hz)84.0 – 163.0 (m)
Type of bearingBall bearings
Casing partitionRadially split
Drive frequency50 Hz /60 Hz
Type of driveElectric motor, turbine, I.C. engine
Drive voltageLow voltage
No. of impeller entriesSingle entry
Impeller material (EN standard)1,4408
Type of installationLong-coupled
Type of couplingDirect
Type of lubricationOil lubrication
Max. permissible fluid temperature20
Nozzle positionEnd suction
Maximum operating pressure25 BAR
Pull-out designYes
Pump set locationDry installed
Shaft material (EN standard)1.4057, 1.4462
Suction characteristicsNon-priming
Suitable for drinking waterYes
Type of impellerRadial, Closed, Multi-vane impeller
Type of connectionFlange
Casing material (EN standard)JS1025
eClass assignment36410101, 36410000, 36410100
Shaft seal typeMechanical seal, Gland packing
Main applicationsIndustry and process engineering, Building services, Water
Casing materialCast iron
Maximum discharge-side pressure25.0 (bar)
Maximum drive rating250.0 (kW)
Type of installationStationary
Maximum speed of rotation2980.0 (1/min)