Air Dimensions Inc. (ADI) features a complete line of Dia-Vac diaphragm vacuum pumps for oil-free, contamination-free, and leak-free sampling. The Standard Series provides maximum performance of 0 to 150 lpm, 0 to 29.5 in.Hg, and 0 to 75 psig. Other pumps include the Micro Series, which performs up to 13 lpm, 28 in.Hg, and 30 psig; Macro Series, up to 13 slpm, 23 in.Hg, and 29 psig; and Mini Series, up to 36 lpm, 22 in.Hg, and 33 psig. Special pumps are also available, from heated head-tolerant pumps (up to 400 degrees Fahrenheit), to units for hazardous areas.

American Controls distributes air-operated diaphragm pumps from several manufacturers, including Graco, Versa-Matic, and Wilden. Husky double-diaphragm pumps by Graco range from 0.25" to 3" diameter, from a maximum free flow delivery of 5 gpm to 275 gpm, depending on size. Several lines of Wilden pumps are also available in single- and double-diaphragm, and plastic and metal, including the Rhino, Unitec, and Saniflo Series of pumps.

KNF Neuberger carries a variety of diaphragm pumps for air, gases, and liquids. Air pumps include micro, mini, and high capacity products that range from 0.25 to 4 lpm, 4 to 15 lpm, and 16 to 300 lpm, respectively. Liquid pumps are also found in micro and mini sizes for flows up to 0.6 and 6 lpm, but specific metering and dosing models are also available. Special process pumps include heated-head, heat-resistant, explosion-proof, and double-diaphragm units.

Progressive Pumps stocks diaphragm pumps from LMI, Durameter, Neptune, and Pulsafeeder. Solenoid- and motor-driven pumps from LMI are capable of flows from 0.01 GPH to 300 GPH, with discharge pressures up to 300 psi. The EVA and EVA-1 pumps from Durameter provide a flow range from 0.08 to 220 GPH, with pressures up to 3,500 psig. Neptune metering pumps feature a hydraulic backed diaphragm with capacities to 80 GPH at 100 psi, and maximum pressure to 1,100 psi. Lastly, Pulsatron A, C, E, and E-Plus Series electronic pumps offer flows up to 500 GPD at 20 psig.

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.

The Pump Shop is a distributor of Yamada air-operated double-diaphragm pumps, available in five sizes from 0.75" to 3". These pumps can accommodate continuous or intermittent use, high or low pressures, and clean or dirty air. They are also self-priming and operated by compressed air, making them intrinsically safe and explosion-proof.

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.

Coker Pump & Equipment carries single- and double-diaphragm pumps from a variety of manufacturers, including Graco, Neptune, and Travaini. These pumps are useful for a broad set of applications, including chemical, food processing, wastewater, and other related industries.

Corrosion Specialties distributes air-operated diaphragm spray pumps for finishing applications. Pumps are available in 0.25" to 3".

Eastern Scientific Sales & Service specializes in the repair and rebuilding of diaphragm and other mechanical vacuum pumps. Units serviced include those by Adixen, Edwards, Fisher Scientific, Welch, and many more. The company also provides loaner pumps for a fee, and for clients in the Boston area, free pick-up of pumps needing repair.

Elliott Equipment Corp. is an authorized distributor of air, hydraulic, and electric diaphragm pumps manufactured by Graco, from 0.25" to 3". Specific offerings include the Triton 308 spray package for finishing woods and metals (max 8.5 gpm, 100 psi), chemical processing pumps for viscosities up to 5,000 cps and solids up to 0.09", and Husky abrasion-resistant double-diaphragm pumps. Drum and bulk transfer pumps, FDA-plus pumps, sanitary pumps, and wastewater pumps are also available.

Kerr Pump & Supply Co. offers a broad range of liquid pumps, including wobble plate diaphragm pumps by Hydra-Cell. Serving the automotive, manufacturing, and pharmaceutical industries, the company is ISO 9001:2000 certified and offers on-site repair and installation, in addition to manufacturing and distributing.

Fitzmyer Co. offers air diaphragm pumps from manufacturers such as ARO, Ingersoll Rand, Warren Rupp, Gorman-Rupp Rampars, and Pumper Parts, as well as rotary diaphragm pumps from Wanner Hydra-Cell. These pumps can handle a variety of industries and process applications, including municipal, wastewater, petroleum, and OEM.The company also provides a full line of services, repairs, parts, and custom work.

Air Power Inc. offers fluid control diaphragm pumps for use with chemicals, adhesives, dyes, paints, coatings, wastewater, and sanitary applications. In particular, single- and double-diaphragm pumps by ARO and Graco are sold for use with low and high viscosity fluids.

Buckeye Pumps distributes a variety of diaphragm pumps from several leading manufacturers. Air-operated units are available from ARO, as are electric units from CH&E and Flojet, and pneumatic units from Flojet.

D & F Distributors carries a number of diaphragm pumps for use with airs, gases, and liquids, from a group of 18 distributors, including Gormann-Rupp, Hydra-cell, Hydromatic, and Pumper Parts.They also offer fabrication and repair services in each of their six service centers.

SCC Pumps is a manufacturer of several types of pumps, including diaphragm, centrifugal, impeller, and submersible pumps. Applications include chemical handling, OEM, and general industry, and materials include stainless steel, polypropylene, nylon, and acetal. The company is also ISO 9001:2000 Certified.