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Wilden® Adds Saniflex™ (Hytrel®) Option for Chem-Fuse Diaphragms

by PSG | Jun 10, 2021

Chem-FuseGrand Terrace, CAJune 10, 2021 Wilden®, part of PSG®, a Dover company, and a worldwide leader in specialty pumps, is pleased to announce that its Chem-Fuse Integral Piston Diaphragm (IPD) product line is now available in a non-food-grade Saniflex (Hytrel®) option for its Pro-Flo® SHIFT and Pro-Flo® Air-Operated Double-Diaphragm (AODD) Metal and Plastic Pump models. Saniflex excels in these applications because it pumps oils, fats and solvents very well. Also, because it is a thermoplastic elastomer (TPE), it offers better abrasion resistance than Buna. Therefore, combining the capabilities of Saniflex with the Chem-Fuse IPD design gives it impressive durability when used in difficult pumping scenarios.

Incorporating patented core technology into its design makes the Chem-Fuse IPD the ideal solution for achieving high performance in critical industrial liquid-handling applications, with the new Saniflex option expanding the list of abrasive liquids that can be reliably handled to include more than food-grade substances. The design of the Chem-Fuse IPD eliminates the leak point that is common in models featuring an exposed outer piston, along with the chances that outer piston abrasion will occur. This design enhancement is crucial for industrial applications that pump abrasive or dangerous fluids.

The diaphragm design also offers easy cleanability for faster changeovers between products. These features allow Chem-Fuse diaphragms to greatly enhance pump performance with increased productivity, reliability and safety. A final benefit of Chem-Fuse diaphragms compared to other reduced-stroke IPDs is the use of a large integral piston and full-stroke shaft that doesn’t sacrifice pump performance. This allows Chem-Fuse diaphragms to provide up to 100% increased flow rates and suction lift compared to other diaphragm models.

Wilden Chem-Fuse diaphragms, which are traditionally constructed of Wil-Flex (Santoprene®), are available in 25 mm (1"), 38 mm (1-1/2"), 51 mm (2") and 76 mm (3") sizes with a temperature range from

-40°C to 107°C (-40°F to 225°F). Chem-Fuse diaphragms are available for use on all of Wilden’s Pro-Flo SHIFT and Pro-Flo metal and plastic pump models.

For more information about Wilden, please visit Wilden is a product brand within PSG, a Dover company. For more information on PSG, please visit

About Wilden® Pump:
Jim Wilden revolutionized the pumping industry when he invented the air-operated double-diaphragm (AODD) pump in 1955. Since that time, Wilden Pump has been at the forefront of bringing AODD technology into the future by building its extensive infrastructure, knowledge base and intellectual capital. Wilden offers a comprehensive line of safe, reliable and energy-efficient AODD pumps – including the Pro-Flo® SHIFT Series, Pro-Flo Series and Specialty Series – for critical pumping applications in the general industrial, paints and coatings, oil and gas, chemical process, water and wastewater, hygienic, mining, ceramics, and military and marine markets. Additionally, Wilden offers the largest selection of AODD diaphragms in the world to ensure your unique application demands are fully met. Headquartered in Grand Terrace, CA, USA, Wilden is part of PSG®, a Dover company. To learn more about Wilden, please visit

About PSG®:
PSG® is a global pump solution expert and leading manufacturer of pumps, systems and related flow-control technology for the safe and efficient transfer of critical and valuable fluids and materials. Headquartered in Oakbrook Terrace, IL, USA, PSG is comprised of several world-class brands, including Abaque™, All-Flo, Almatec®, Blackmer®, Ebsray®, em-tec, EnviroGear®, Griswold®, Hydro Systems, Mouvex®, Neptune™, Quattroflow™, RedScrew™ and Wilden®. PSG products are manufactured on three continents – North America, Europe and Asia – in state-of-the-art facilities that practice lean manufacturing and are ISO-certified. PSG is part of the Fluids segment of Dover Corporation. For additional information on PSG, please visit PSG: Where Innovation Flows.

Marketing Contact:
Christine Nunez, Marketing Communications Manager
909-422-1774 or

Media Contact:
Darren Wight, VP of Client Services
DeanHouston (agency for PSG®)
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