2 Inch WA

2 Inch WA Series Air Operated Double Diaphragm Pumps

The 2 inch WA pumps are built for continuous high volume transfer. They are not a derivative of the DP3X platform. Their design prioritizes flow rate and durability in metallic and plastic configurations.

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Models

Two Models For Two Fluid Types

One metallic, one plastic. Both share the same port size and performance envelope, but differ in body material and weight.

Black industrial double diaphragm pump with green seals and metal fittings on a white background

WA Series

2 Inch WA Series Metallic Air Operated Double Diaphragm Pump

651 LPM at 8.3 bar from a 29.6 kg aluminum body. The WA Series option for volume and material flexibility.

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WA Series

2 Inch WA Series Plastic Air Operated Double Diaphragm Pump

145 GPM from a 28.1 kg polypropylene body. A chemically resistant pump for acids, alkalis and solvents.

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Who It Is For

Who Uses The 2 Inch WA Pumps

Operations that move large volumes of liquid without interruption and need a pump that lasts through repeated cycles.

Chemical plants transferring bulk acids, alkalis or solvents at high flow rates
Metalworking shops circulating cutting fluid and quenching oil with high solids content
Waste water treatment plants moving sludge or filtered liquids in continuous transfer
Food and beverage facilities handling condiments or additives that require non-metallic contact
OEMs integrating a pump into a system where weight and material compatibility are critical

Metalworking And Machine Tools Chemical Processing Water And Wastewater Treatment Electroplating And Surface Finishing

Problems Solved

What The WA Platform Was Designed To Handle

The WA series addresses the need for reliable, high volume transfer in both metallic and plastic body options.

Low flow in a 2 inch pump, solved by a larger air valve and optimized port geometry
Material degradation from aggressive fluids, addressed by choosing body materials that resist corrosion
Excessive vibration during long runs, reduced by a balanced air distribution system and rigid mounting base
Pump failure from dry running, mitigated by a design that tolerates dry operation up to the maximum suction lift
Inconsistent flow under variable pressure, improved by a stable air valve response across the operating range

Core Advantages

Key Features Of The 2 Inch WA Pumps

High Flow Capacity

The 2 inch port and air valve design allow both metallic and plastic models to achieve up to 651 LPM, making them suitable for bulk transfer.

Dual Body Options

Metallic body for durability in abrasive or high pressure service, plastic body for chemical resistance and reduced weight.

Dry Suction Lift Range

The metallic model lifts up to 8.3 m dry, the plastic model up to 4.27 m. Both are capable of self priming from ground level.

Solids Handling

Both models pass 6.4 mm solids, suitable for fluids with suspended particles like chips, sludge or coarse additives.

Range Data

Performance Range

The envelope across the two 2 inch WA models, based on individual data sheets.

Port size	2 inch
Maximum flow rate	548.8 LPM (145 GPM) for plastic, 651 LPM (172 GPM) for metallic
Maximum operating pressure	8.3 bar (120 psi) for both models
Suspended solids max diameter	6.4 mm (1/4 inch)
Maximum dry suction lift	4.27 m (14 feet) for plastic, 8.3 m (27.2 feet) for metallic
Body materials	Metallic (cast iron or stainless steel), plastic (polypropylene)
Weight	28.1 kg (62 lbs) for plastic, 56.38 kg (124.3 lbs) for metallic, 58.9 kg (129.9 lbs) for heavier metallic variant

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 2 Inch WA Duties

Bulk Transfer From IBCs And Drums

The 2 inch port and high flow rate allow rapid emptying of large containers without needing multiple pumps.

Continuous Circulation In Cooling Systems

The pump runs for hours with minimal wear, maintaining flow in systems that circulate quenching oil or coolant.

Sludge And Waste Water Movement

The 6.4 mm solids handling allows passage of small debris without clogging, suitable for low pressure transfer.

Chemical Transfer With Material Compatibility

The plastic body version handles corrosive liquids without degradation, while the metallic version supports higher pressure.

Guides For The 2 Inch WA Pumps

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.

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.

Material Guide

Choosing The Right Diaphragm Material For Your Fluid

Diaphragm selection is a balance between mechanical flex life and chemical compatibility. Pick the right material to avoid premature failures and process contamination.

Answers

2" WA Diaphragm Pumps FAQ

What is the difference between the 2 inch metallic and plastic WA pumps?

The metallic version has a higher dry suction lift and heavier weight. It is built for high pressure and abrasive fluids. The plastic version is lighter and handles corrosive liquids without metal contact.

Can I use the 2 inch WA pump for abrasive fluids?

Yes, the metallic body version is suitable for abrasive fluids like cutting fluid with chips. The plastic version is not recommended for highly abrasive media.

What is the maximum dry suction lift for each model?

The plastic model lifts up to 4.27 m (14 feet). The metallic model lifts up to 8.3 m (27.2 feet), depending on the specific variant.

Are these pumps compatible with other brands' installations?

The mounting dimensions and port positions are standard. Check the drawing for the specific model to confirm fit with your existing setup.

What lead time should I expect?

The 2 inch WA pumps are available in stock. Send the model code and quantity, and we will confirm delivery timing with the quotation.

Select A 2 Inch WA Pump For Your Transfer Duty

Provide the fluid type, required flow, discharge head and air pressure. We will recommend the right model and send the full code.

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