PSG Brands

Providing solutions across a variety of markets

PSG brands represent a commitment to our customers by offering them safe, quality, reliable products with the best possible delivery in our industry.

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PSG Markets

Expertise to solve their critical fluid management problems

PSG® focuses on providing solutions to customers across a wide array of markets and industries. Our core competencies span several markets that cover nearly every aspect of daily life around the globe.

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Water & Waste Water

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PSG Support

Providing solutions across a variety of markets

PSG brands are always ready to assist with technical support for any of our products, parts or accessories.

Technical Support
Abaque Logo
All-Flo Logo
Almatec Logo
Blackmer Logo
Ebsray Logo
em-tec Logo
Griswold Logo
Hydro Systems Logo
Malema Logo
Mouvex Logo
Neptune Logo
PSG Biotech Logo
Quattroflow Logo
Wilden Logo

PSG® offers the latest technology in air-operated double-diaphragm (AODD) pumps. AODD pumps are positive displacement reciprocating pumps that can be used in multiple fluid-transfer applications, and thanks to an array of unique design characteristics, AODD pumps are ideally suited for applications that require a robust, plug-and-play, and easy-to-maintain pump.

PSG offers both Wilden® and Almatec® AODD pumps, which are well-known, industry-leading brands that provide a variety of unique benefits to multiple markets and applications.

Features and Benefits

  • Available sizes: 6 mm (1/4″) to 102 mm (4″)
  • Capacity capabilities ranging from 15 lpm (4 gpm) to 1048 lpm (277 gpm)
  • Shear sensitive
  • Self-priming, run-dry capable
  • Easy to install, easy to maintain, durable and reliable
  • No mechanical seals and lube-free operation
  • Available in different housing materials to meet special requirements


  • Chemical Processing
  • Paint & Coatings
  • Water & Wastewater
  • Bulk Transfer
  • Hygienic
  • Mining
  • Ceramic
  • Semiconductor
  • Many More 

Almatec Logo

Introduced to the industry in 1984, Almatec pumps excel in abrasive chemical applications.  The pumps are have a bolted design and solid plastic construction with some designs having only three solid housing parts making them easy to maintain. Additionally, with some designs (such as the popular E-Series) featuring only three solid housing parts, Almatec has a reputation for being extremely easy to rebuild and maintain when required.

Almatec Products Brochure

Wilden Logo

As the inventor of the AODD pump, Wilden offers the industry's broadest range of pump and diaphragm options. Suitable for applications requiring high flow rates, Wilden offers pumps in both clamped and bolted construction as well as various materials, sizes, and valve options.

Wilden Brand Portfolio Brochure

All-Flo Logo

All-Flo has been providing air-operated double-diaphragm (AODD) solutions for challenging applications since 1986. Known for their simplicity, efficiency, performance, and compatibility, All-Flo’s portfolio of fluid-handling solutions include metal and plastic pumps, Max-Pass® S Series Pumps, All-Pur™ FDA F Series Pumps, and associated accessories.

All-Flo Product Overview Brochure