Plastic AODD Pumps Almatec's Plastic AODD Pumps now Acid Resistant

Editor: Dominik Stephan

Almatec has worked over its E-Series plastic air-operated double-diaphragm (AODD) pumps: Now the sturdy workhorses offer full containment for the transferring of dangerous acids across the chemical supply chain...

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Alamtec's E-Series plastic AODD pump offers fulll containment for the safe transfer of acids.
Alamtec's E-Series plastic AODD pump offers fulll containment for the safe transfer of acids.
(Picture: Almatec)

The Almatec E-Series plastic AODD pumps features no mechanical seals or packing, eliminating a critical leak point. Rather, Almatec offers a unique stainless-steel containment ring that creates consistent high-torque compression all the way around the ring, pulling the components tightly together. This setup helps to eliminate a potential leak path, the manufacturer believes. Due to its metal core, the E-Series does not require diaphragm discs, which frequently give rise to leaks and attract contaminants.

Pumping Acids With a Plastic Pump?

The all plastic E-Series is made from CNC machined solid block PTFE or PE, which allows the pump to be used in the harshest environments to handle even aggressive acids, including nitric acid, sulphuric acid, hydrogen fluoride, hydrogen chloride and phosphoric acid. The manufacturing by CNC machining enables tighter tolerances along with reduced vibration, less risk of leaks, and greater stability and durability, Almatec states. Thus, PE and PTFE conductive models are ATEX-certified.

Sometimes, beautiful products need dirty processes. Learn more about the pumping of aggressive fluids and Almatec's sturdy all plastic AODD pumps in our article Tackling Aggressive Fluids: Solid-Body Plastic AODD Pumps Deliver the Operational Ability for Abrasive Media.

AODD Pumps for Harshest Applications

The E-Series is available in seven sizes from 6 to 76 mm (1/4 to 3 inch) with maximum temperatures to 120°C (248°F). The pump also features maximum flows to 800 L/min (210 gpm); suction lift to 5 m (16.4 ft) dry, 9.5 m (31.2 ft) wet; and maximum solids size to 15 mm (9/16 inch).