DEPA Type DB High Pressure Air Operated Diaphragm Pumps – Up to 21 Bar AODP

The DEPA Type DB is a high-pressure Air Operated Diaphragm Pump capable of delivering output pressures of 13, 16, or 21 bar from a standard plant compressed air supply of 7 bar. This is achieved through an integrated booster unit that multiplies inlet air pressure by up to 3:1 before it reaches the pump's air motor, eliminating the need for a separate high-pressure compressed air system.

Safety valves are fitted as standard on all Type DB pumps to protect downstream equipment and personnel in the event of a pressure excursion. The pump body is constructed from cast stainless steel 316L, making it compatible with acids, alkalis, and process chemicals typically encountered in the high-pressure filtration and pressing applications the DB is designed for.

Three sizes — DB 25 (1"), DB 40 (1.5"), and DB 50 (2") — cover the most common filter press and high-pressure injection applications. All three sizes share the same 316L stainless steel housing, ensuring chemical resistance and corrosion performance consistent across the range.

The DEPA Type DB is specified for processes requiring pressures beyond the standard 7 bar AODP limit:

- Ceramic Industry: High-pressure filter pressing of ceramic slurries and clay bodies to produce consistent pressed blanks - Automobile Industry: High-pressure transfer and injection in paint shops, adhesive bonding lines, and seal application systems - Waste Water Treatment: High-pressure sludge dewatering in filter press operations - Chemical Industry: High-pressure injection, dosing, and reactor charging applications where standard pressure is insufficient - Environmental Technology: Membrane filter press feeding for sludge volume reduction in industrial and municipal applications

Contact PC Engineering for pricing, availability, and technical support for DEPA Type DB High Pressure Air Operated Diaphragm Pumps. Call us or fill in our inquiry form — our engineers will respond within 24 hours.