Welch is the technology leader for laboratory and light industrial vacuum pumps, systems, and components. Our quality products are sold globally under the Welch name. Welch products are produced by Gardner Denver Thomas, Inc. Welch has provided quality vacuum pumps for laboratory, industrial and educational applications for over a century. Today, Welch is a leading manufacturer of vacuum pump products for chemical and biological laboratories, high vacuum manufacturing, and air-conditioning/refrigeration. The Welch product line includes oil lubricated rotary vane vacuum pumps, dry piston and diaphragm vacuum pumps, and specialized vacuum systems, components, and applications. ChemStar Dry, the oil-free deep vacuum system, is the latest technology innovation from Welch. Our rotary screw, reciprocating and centrifugal compressors are used in thousands of compressed air applications worldwide.

Company details

1601 Feehanville Road Suite 600 , Mt. Prospect , IL 60056 USA

Locations Served

Our Distributors

Business Type:
Industry Type:
Monitoring and Testing - Laboratory Equipment
Market Focus:
Globally (various continents)

For over 100 years, Welch has been supplying vacuum pumps to fulfill your laboratory vacuum application needs. These years of experience have allowed Welch to develop an in-depth knowledge of selecting the correct vacuum pump solution for many laboratory applications.

Welch's innovative engineering provides industry-leading designs for belt-drive and direct-drive vacuum pumps, dry (oil-free/oil-less) PTFE diaphragm pumps and dry WOB-L® piston pumps. Welch also enables walk-away control for vacuum-induced evaporation with our Self-cleaning dry PTFE diaphragm pump systems.

For vacuum maintenance of commercial and industrial refrigeration and HVAC systems, Welch offers a complete line of refrigeration servicing pumps

Because of the famous Durability of Welch products, many of our pumps are still in service decades after purchase. If you need to repair or refurbish your Welch pump, see our Repair Service for fast restoration at a fair price. For do-it-yourself repairs, find your pump model number for original Welch component repair kits.

About Gardner Denver

Gardner Denver is a global producer of compressors, vacuum pumps and related equipment.

The durability of our products is measured in decades. Superior designs ensure the most reliable, energy efficient products in the industry.

Gardner Denver provides low-pressure air and vacuum with a complete line of positive displacement and centrifugan blowers and exhausters, as well as rotary vane compressors.

Nash Elmo offers a wide range of products to meet our customers’ vacuum needs. These include:liquid ring vacuum pumps, gas compressors, dry vacuum pumps, side channel blowers, screw pumps, rotary vane pumps, regenerative blowers and steam jet ejectors. Uniquely designed engineered systems are also provided to meet specific needs in vent gas, digester gas, and condenser air removal applications.

The Syltone Transportation Group, a part of our Blower Division, provides specialty unloading equipment for virtually every sector of the bulk transportation market. Innovative products, made specifically to meet the challenges of the transportation market, coupled with outstanding engineering capabilities and customer service, make Syltone the choice for all your product transfer needs.

Our rotary screw, reciprocating and centrifugal compressors are used in thousands of compressed air applications  worldwide.

One of the most respected names in the petroleum industry, Gardner Denver designs, manufactures, markets, and services a diverse group of pumps used in oil and natural gas drilling production, well servicing and stimulation.

Gardner Denver also offers water jetting pums, systems and accessories for industrial cleaning and maintenance.

The Gardner Denver Fluid Transfer Division includes Emco Wheaton the world’s largest and most successful manufacturer of Loading Arms and associated products, such as Swivel Joints, API Dry-Break Couplers, Floating Suction and Roof Skimmers for storage tanks, and rack to transport Grounding Devices.

Loading arms are custom-engineered articulated pipe work system that makes the connection between any bulk storage facility and a means of transport, such as tank trucks, railcars, marine barges or ocean going super tankers. Loading arms are used for the safe, efficient and environmentally superior means of product transfer for loading and unloading all types of transports in the Petroleum, Chemical, Compressed Gas and Food industries.

With a worldwide network of hundreds of distributors, Gardner Denver provides superior service to protect your your investments with us.