Marine Ballast Pump

CWZ Series Horizontal Self-Priming Marine Ballast Pump – Technical Specifications

Product Overview

The CWZ Series Marine Ballast Pump represents high-performance self-priming centrifugal pump specifically designed for marine applications, featuring:

Robust construction with secure mounting
Streamlined design for optimal hydrodynamics
Exceptional self-priming capability
Simple installation and operation

Key Applications

✔ Ballast water systems
✔ Fire protection networks
✔ Bilge water drainage
✔ Domestic water supply

Fluid Compatibility

Seawater & freshwater
Maximum temperature: 80°C (176°F)
Not suitable for viscous or abrasive fluids

Model Identification System

Example: 32CWZ-5

32 → Inlet/outlet diameter: 32mm (1.25″)
CWZ → Marine horizontal self-priming centrifugal pump
5 → Derived from impeller specific speed (nq÷10 + integer adjustment)

Marine Ballast Pump

Parameters:

MODEL	effecience	power	CAPACITY	HEAD	RPM	NPSH	Electric Motor model
	%	kw	m3/h	m		m
50CWZ-8	51	3	21	21	2870	4	Y100L-2H(B3)
50CWZ-6	56	4		30	2890	4	Y112M-2H(B3)
50CWZ-5	52	5.5		42	2900	5	Y132S 1-2H(B3)
65CWZ-11	64	4	36	21	2890	4	Y112M-2H(B3)
65CWZ-8	61	5.5		30	2900	4	Y132S 1-2H(B3)
65CWZ-6	57	11		42	2930	5	Y160M1-2H(B3)
65CWZ-5	52	15		60	2930	5	Y160M2-2H(B3)
80CWZ-14	67	7.5	60	21	2900	4	Y132S 2-2H(B3)
80CWZ-11	65	11		30	2930	4	Y160M1-2H(B3)
80CWZ-8	55	15		42	2930	5	Y160M2-2H(B3)
80CWZ-6	54	22		60	2940		Y180M-2H(B3)
80CWZ-5.5	56	30		75	2950		Y200L1-2H(B3)
100CWZ-18	68	11	100	21	2930	5	Y160M1-2H(B3)
1OOCWZ-14	65	15		30	2930		Y160M2-2H(B3)
100CWZ-11	58	22		42	2940		Y180M-2H(B3)
100CWZ-8	55	30		60	2950		Y200L1-2H(B3)
100CWZ-6	50	45		85	2970		Y225M-2H(B3)