→ Improved hydraulics ensure high overall efficiency and an IE3/IE4 motor saves energy

• → Easily replaceable and standardised components for a longer service life (e.g. spacer coupling, bronze neck ring)

  

• Design

  Single-stage, low-pressure centrifugal pump with axial suction, mounted on a baseplate.

  Application

  • Pumping of heating water (acc. to VDI 2035), chilled water and water/glycol mixtures without abrasive substances in heating, chilled water and cooling systems.

  • Applications for irrigation, building services, general industry, power stations, etc.

  Equipment/function

  Single-stage low-pressure centrifugal pump in monobloc design with coupling, coupling guard, motor and baseplate

  • Mechanical shaft seal or stuffing box

  • Typekey

    Example	NLG 200/315-75/4
    NLG	Series designation: Standard pump
    200	Nominal diameter DN of pressure port
    315	Nominal diameter of impeller [mm]
    75	Rated motor power P2 [kW]
    4	number of poles

    Technical data

    • Permissible temperature range -20°C to +120°C

    • Mains connection 3~400 V, 50 Hz

    • Protection class: IP55

    • Nominal diameter DN 150 to DN 300

    • Max. operating pressure 16 bar

    Materials

    • Pump housing and pressure lid: EN-GJS-500-7

    • Bearing bracket: EN-GJL-250

    • Impeller: EN-GJL-250(special version: G-CuSn10)

    • Shaft: 1.4028

    • Stationary wear rings: G-CuSn10

    • Mechanical seal: AQ1EGG;(other mechanical seals on request)

    Construction

    • Single-stage horizontal spiral housing pump with bearing bracket and exchangeable stationary wear rings in process design

    • Shaft seal using mechanical shaft seals in accordance with EN 12756 or packing stuffing box

    • Spiral housing with cast pump bases. Bearing of the pump shaft using greased grooved ball bearing

    • Shaft coupling with intermediate sleeve

    Scope of delivery

    • Pump

    • Installation and operating instructions

    • Pump with free shaft end or

    • Pump on baseplate with coupling and coupling guard or

    • Completely mounted pump on baseplate with electric motor

    Options

    • Other materials and versions on request

    • Other voltages and frequencies available on request.