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ZW65-30-18 Self-Priming Sewage Pump at 1450 r/min — ZW Self-Priming Sewage Pump
ZW Self-Priming Sewage Pump

ZW65-30-18 Self-Priming Sewage Pump at 1450 r/min

Model: ZW65-30-18

ZW65-30-18: 30 m³/h at 18 m on a 4 kW, 1450 r/min motor, DN65 flanges. What the lower speed means in daily use.

Specifications
Flow Rate30m³/h
Head18m
Power4kW
Inlet / Outlet Diameter65 / 65mm
MaterialCast iron (standard); stainless steel on request
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Product Overview

ZW65-30-18 is the first ZW model that runs at 1450 r/min instead of 2900. It delivers 30 m³/h at 18 m on 4 kW, through DN65 suction and discharge.

What the lower speed means

A four-pole motor turns at half the speed of a two-pole one. For a given duty, the impeller is larger and moves more slowly. With gritty or fibrous wastewater that usually means slower wear of the impeller and seal, and a quieter pump. The trade-off is a heavier unit: this one weighs 200 kg.

Its twin is ZW80-40-16, on the same 1040 mm base and the same 4 kW motor, with a DN80 inlet and 40 m³/h at 16 m.

Technical data

Item ZW65-30-18
Flow 30 m³/h
Head 18 m
Motor power 4 kW
Speed 1450 r/min
Efficiency 45 %
NPSHr 2.5 m
Self-priming height 5.5 m
Self-priming time 3 min per 5 m
Suction / discharge DN65 / DN65
Weight 200 kg

Installation dimensions (mm)

The pump, coupling and motor are mounted on a common base. L is the overall length; L1 to L4 are base lengths; a and f locate the outlet; B1 and B2 are the base widths; H is the shaft centre height; h1 and h2 are the heights of the suction and discharge flanges; h3 is the base thickness.

L L1 L2 L3 L4 a f B1 B2 H h1 h2 h3 Base bolts
ZW65-30-18 1040 760 135 500 340 350 650 380 450 265 485 760 25 4ר18

Flange dimensions (mm)

Flange DN Outer dia. D Bolt circle Raised face Thickness b Face height f Bolts n×d
Suction 65 160 130 110 14 2 4ר14
Discharge 65 160 130 110 14 2 4ר14

Typical Applications

  • municipal sewage
  • sludge and slurry transfer
  • aquaculture
  • paper and textile wastewater

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