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Air-Operated Diaphragm Pumps

Zero electrical spark, full ATEX compliance. Pneumatic systems powered by compressed air providing unrivalled safety in transferring flammable and aggressive chemicals.

100% Safety Without Electricity

In environments with solvent, alcohol or flammable gas emissions, even a tiny spark from an electric motor pump can cause disaster. Pneumatic Diaphragm pumps draw their energy from compressed air from the factory compressor. Since there is no electrical connection, they provide 100% Ex-Proof (ATEX) protection. Since they have no mechanical impeller, they can also easily pump liquids containing fruit particles or solid particles without crushing the product.

Critical Engineering Features

Dry Running Without Damage

ATEX (Ex-Proof) Zone Compliance

Solid Particle and Viscous Material Transfer

PTFE (Teflon) and Santoprene Diaphragm

Easy Flow Rate Adjustment with Air Pressure

Sealless Design

Diaphragm Pump Capacity Table

* The performance of pneumatic pumps is directly dependent on the air pressure (Bar) produced by the compressor in your facility. Data is calculated with reference to 7 Bar air supply.

Connection Size	Max. Flow (L/min)	Max. Air Pressure	Solid Particle Size
1/2" Inch	50 L/min	7 Bar	3 mm
1" Inch	160 L/min	7 Bar	4 mm
1.5" Inch	350 L/min	7 Bar	6 mm
2" Inch	600 L/min	7 Bar	8 mm

Pneumatic Transfer FAQ

Does dry running damage the pump?

No. Unlike centrifugal and lobe pumps, air diaphragm pumps do not heat up and break down even if they run dry (without liquid) for hours since there is no mechanical friction.

How can I adjust the flow rate?

While expensive inverters (frequency drives) are needed for electric motor pumps, simply throttling or opening the air valve from the compressor is sufficient to change the flow rate in diaphragm pumps.

How do we select the diaphragm material?

PTFE (Teflon) with excellent chemical resistance for aggressive acids and solvents; Santoprene or NBR with flexible structure for food applications or sludgy products containing abrasive particles.