K/M Specialty Pumps and Systems carries both metallic and non-metallic models of EXPert Series air-operated diaphragm pumps. The metallic pumps come in combinations such as aluminum/stainless steel and aluminum/cast iron/Hastelloy/stainless steel, with maximum flows from 12 to 275 gpm and a maximum solid size of 0.375". The non-metallic models are available in acetal/polypropylene/PVDF or polypropylene/PVDF, and provide a maximum flow up to 184 gpm and maximum pressure to 120 psi. Maximum solid is up to 0.25" and maximum dry suction life is 14 ft.

Ryan Herco Flow Solutions offers air-operated and electronic diaphragm pumps from a wide variety of manufacturers. Air-operated options include non-metallic, metallic, and sanitary AODD pumps from Sandpiper, metallic and non-metallic AODD pumps from Aro, and more, with izes from 0.25" to 3". By contrast, all electronic diaphragm pumps are supplied by ITT Industries.  These Polypro EOD pumps come duplex, triplex, or quad and offer flows and operating pressures up to 5 GPM and 80 psi. Applications include transfer, filtering, filling, recirculation, spraying, and mixing. Special low-flow, phenolic, and Santoprene units are also available.

US Plastic Corp. carries a variety of self-priming diaphragm pumps. Air-operated, double diaphragm pumps are available for use with car wash chemicals, pigments, inks, paints, additives, and sanitizers. Made from a polypropylene body, the pumps offer flows to 5 GPM and pressure to 100 psi, with suction lift to 16.5' dry and 20' wet. Sandpiper diaphragm pumps are also sold, for use with abrasive and viscous liquids (up to 10,000 centipoise). Models are available with 4, 15, 25 and 45 GPM capacities.

Graco carries an array of air operated diaphragm pumps, starting with the FDA-compliant Model 1040, a 1.5" double-diaphragm pump for food-related applications requiring high flow rates. Special versions of the 1040 are available for coatings and foam, as well as finishing applications, while Models 1590 and 2150 are other FDA-compliant pumps capable of passing solids up to 2" and 2.5", respectively. Sanitary ball, sanitary flapper, and sanitary poultry pumps are also available: the 3150 ball pump passes solids up to 1", while the poultry and 3150 flapper pumps pass solids up to 2.5".

Ingersoll Rand offers stall-free, ice-free diaphragm pump operation using a patented balanced air valve design, and quick dump exhaust valves that divert cold exhaust air away from ice-prone components. The company offers metallic and non-metallic pumps in compact sizes (0.25" to 0.75" ports) with flow rates up to 14.8 gpm.

Wilden specializes in air-operated double-diaphragm pumps. Their product line begins with the Advanced Series of plastic pumps (e.g. Teflon PTFE), from the 0.25" P25, with a flow rate to 4.4 GPM, to the 1.5" PX400 (119 GPM), to the 3" P1500 (207 GPM); in total, 11 models are available.  The Advanced Series also exists in metal constructions, such as die cast aluminum, stainless steel, and alloy C. The Original Series diaphragm pumps are also made in both plastic and metal. Plastic versions begin with the 0.25" P.025 (4.8 GPM) and end with the 2" P8 (155 GPM), while metal versions are as large as the 4" T20 that features a flow rate to 232 GPM. Max pressure for the units above is 125 psi.

The Bosworth Company features its Guzzler 400 hand pump for bilge or fluid transfer application in marine or sanitation applications. With a Buna-N diaphragm, it can pump 10 GPM at a max pressure of 20 psi. Different configurations of the Series 400 are available (e.g. vertical, horizontal), in addition to several other hand pump options. Foot pumps with natural rubber diaphragms are also available, with max flows from 1.3 GPM to 2.7 GPM. Lastly, motorized pumps include the Guzzer 450 through 2800 Series, capable of flows to 6.7 GPM and 13.4 GPM.

Almatec is a manufacturer and distributor of pneumatic diaphragm pumps by Wilden and Mouvex. Pumps include the E-Series standard plastic units made from PE or PTFE housing with max capcities of 0.9 to 48 m3/h, and the polymer-constructed A-Series capable of up to 32 m3/h. The Chemicor Series is made from stainless steel housing, and EPDM and PTFE diaphragms and ball valves; depending on pump size, they can handle particles from 9 to 14 mm. Other options include the Biocor Series EHEDG pumps for sterile applications, Futur Series for the semiconductor industry, and AH Series high-pressure pumps for charging filter presses.

Versa-Matic offers three lines of air-operated double-diaphragm pumps. The Elima-Matic Series offers pumps in polypropylene, acetal, aluminum, and stainless steel, with special features such as clamped design, bolted design, split manifold, and side discharge. These pumps are designed to eliminate pumping problems and keep operations running, so they manufacture them for specific issues, like the E4 for handling flows up to 90% solids and E2 for ice-resistance. The Ultra-Matic Series is designed to eliminate air leakage and to be chemical-resistant through the use of appropriate materials such as stainless steel, ceramic, polypropylene, and PVDF. Specialty pumps are also available in several types, some of which are capable of being submerged or generating high pressures, or being FDA- or 3A Sanitary Standards-approved.

Warren Rupp is the manufacturer of Sandpiper air-operated, double-diaphragm, non-positive displacement pumps in heavy duty ball, heavy duty flap, containment duty, standard duty, and other configurations. These products can be constructed in metals such as aluminum or cast iron, or non-metallics such as polypropylene and PVDF, with ATEX, CSA, UL, CE, USDA, and FDA certifications available. Specific highlights include the heavy duty ball pumps that can handle solids from 0.25" to 0.875", and the heavy duty flap pumps with their solids range from 1" to 3". Warren Rupp also produces Marathon pumps.