Diaphragm Pumps

Reliable pumps for your chemical feed applications

Browse a selection of chemical feed diaphragm pumps for your water and wastewater treatment plant. These high-quality and heavy-duty pumps are perfect for moving sludge and heavy solids.

What is the purpose of a diaphragm pump?

Diaphragm pumps are essential in water and wastewater treatment facilities due to their positive displacement design that uses a flexible diaphragm to create precise suction and discharge cycles. These pumps excel in chemical dosing and metering applications, delivering accurate amounts of treatment chemicals like chlorine, coagulants, and pH adjusters with consistent flow rates regardless of back pressure, which is critical for regulatory compliance. Their self-priming capability and ability to run dry without damage make them ideal for handling air pockets and liquids with varying viscosities and suspended solids. In wastewater applications, diaphragm pumps effectively handle sludge dewatering operations, abrasive materials, and filter press feed, with their pulsating flow preventing settling and clogging in transfer lines. They also serve specialized functions in sampling systems and polymer feed applications where precise flow control is essential. The robust construction, minimal maintenance requirements, ability to handle corrosive chemicals safely, and easy access to replaceable components make diaphragm pumps cost-effective choices for continuous operation in demanding water treatment environments.