ZG Series

ZG Series Air Operated Double Diaphragm Pumps

The ZG series is a standalone model in Nuodean's catalog. It is not a variant of another series, nor is it a replacement for a different model. It is one pump, with performance defined by its port size and operating conditions.

Request A Quote See The 1 Models

Models

One Model, One Platform

The ZG pump is a single model with four port sizes: 1/2 inch, 3/4 inch, 1 inch and 1.5 inch. Performance varies with size, but the internal design remains consistent across the range.

A collection of industrial diaphragm pumps in various sizes and materials, including black, silver, and white models.

ZG Series

ZG Series Air Operated Double Diaphragm Pump

From 57 LPM at 1/2 inch to 378 LPM at 1.5 inch. The ZG series covers mid-range flow and pressure with multiple body materials.

View Specifications →

Who It Is For

Who Uses The ZG Pump

Users who need a single, reliable pump for a known duty, where the flow and pressure are within the ZG range and the solids size is small.

Small batch transfer in chemical and pharmaceutical settings where flow is moderate and solids are minimal
Filter feed systems handling low viscosity liquids with small particulates
Tank farm transfer for small volume batches where a full-sized pump is not required
Surface preparation lines with low to moderate flow and low solids content
3D printing material supply where consistent, low pulsation feed is needed

Chemical Processing Metalworking And Machine Tools

Problems Solved

What The ZG Pump Is Designed For

The ZG pump is not a solution for every application. It is built for a defined range of flow, pressure and solids size, and is not intended to replace larger models.

Overloading a small pump with high solids or high pressure, which can lead to early diaphragm failure
Using a larger pump than needed for low flow duties, which increases air consumption and noise
Expecting a high dry lift from a pump not designed for it, since dry lift is not specified
Assuming the pump is interchangeable with other models, when it has unique mounting and port dimensions

Core Advantages

Key Features Of The ZG Model

Compact Design

The ZG pump is built for small spaces and low flow applications. It fits where larger pumps would not, without sacrificing air operation or dry priming.

Fixed Performance Envelope

The pump delivers predictable flow and pressure across its port sizes. No variation in performance between models, since there is only one model.

No Air Lubrication Required

The pump uses a self-lubricating air system, so no oiler is needed and the exhaust remains clean even with dirty compressed air.

No Spare Parts For Air End

The air end is not serviceable in the field. If it fails, the entire pump must be replaced. Keep this in mind for maintenance planning.

Range Data

Performance Range

The performance envelope for the single ZG model across its four port sizes.

Port sizes	1/2 inch, 3/4 inch, 1 inch and 1.5 inch
Maximum flow rate	57 LPM at 1/2 and 3/4 inch, 150 LPM at 1 inch, 378 LPM at 1.5 inch
Maximum operating pressure	7 bar at 1/2 and 3/4 inch, 8.4 bar at 1 inch and 1.5 inch
Suspended solids max diameter	2.5 mm at 1/2 and 3/4 inch, 3.2 mm at 1 inch, 4.8 mm at 1.5 inch
Air inlet	1/4 inch BSPT female

Performance figures are transcribed from the Nuodean data sheet for this pump. Flow is measured at the pump discharge with water at ambient temperature; your duty point depends on air supply pressure, suction conditions, fluid viscosity and discharge head. Ask our engineers to confirm the duty point before you order.

Application Scenarios

Typical ZG Duties

Small Batch Transfer

Moving small volumes of liquid between tanks or containers, where the flow is steady and the solids content is low.

Filter Feed

Supplying low pressure feed to a filter system where the liquid is clean and the flow is consistent.

Material Supply For 3D Printing

Delivering resin or other low viscosity liquids to a printer with minimal pulsation and no shearing.

Tank Farm Transfer

Transferring small batches from one tank to another in a controlled, self-priming setup.

Guides For The ZG Series

Comparison

DP3X Or WA Series Which Nuodean Pump Should You Buy

Compare the two core Nuodean AODD pump platforms to determine whether your facility needs the current generation DP3X or a direct like for like WA replacement.

Working Principle

How An Air Operated Double Diaphragm Pump Works

Follow one full stroke through the pilot valve, the major air valve and both liquid chambers, and the rest of the pump stops being mysterious.

Buying Guide

How To Size An Air Operated Double Diaphragm Pump

Sizing an air diaphragm pump from the existing pipe size or the headline maximum flow guarantees poor performance. Here is how to select the right displacement and port size from actual duty conditions.

Answers

ZG Series AODD Pumps FAQ

Is the ZG pump interchangeable with DP or WA models?

No. The ZG pump has different mounting dimensions, port positions and air inlet size. It cannot be swapped in for a DP or WA pump without modifying the installation.

What is the maximum dry suction lift for the ZG pump?

The dry suction lift is not specified in the catalog. It depends on air pressure and line losses. Test the pump in your setup to confirm lift capability.

Can I replace the air end on the ZG pump?

The air end is not serviceable. If it fails, the entire pump must be replaced. There are no spare parts for the air end.

Where can I find the full data sheet for the ZG pump?

Download the full Nuodean catalogue from the website. The ZG pump is listed in the product section with its full performance data and model code.

How do I select the right ZG size for my application?

Match the port size to your line. Then check the flow and pressure you need. The 1.5 inch model gives the highest flow, but only if your system can handle 8.4 bar.

Check If The ZG Pump Fits Your Duty

Send the fluid, the required flow, the discharge head and the solids size. We will confirm if the ZG pump is suitable, or recommend a better fit from another series.

Chat On WhatsApp [email protected]?subject=Inquiry%3A%20ZG%20Series%20AODD%20Pumps All Products