Published Articles

Wilden AODD pumps excel in mine electrowinning applications


Source: International Mining The key link between mine excavation and the precise operation of electrowinning is the fact that industrial pumps are required to optimise both processes. One type of pump style – air-operated double-diaphragm (AODD) – has according to Wilden® Pump & Engineering Company been proven in the field “to be flexible enough to… Read more »

Teamwork On Display In Meeting Strict Delivery Date For New Customer


In September 2014, Wilden® distributor El Paso – Phoenix Pumps, Inc., was successful in obtaining an order for six Model XPS1500/SSAAA/TWS/TF/STF Air-Operated Double-Diaphragm (AODD) Pumps from a food processor that had been loyal to the Graco brand for many years. Shortly after order entry, a parts issue was discovered and the delivery date for the… Read more »

The Arrival of Diaphragm Pumps as Mainstream Process Pumps


By Wallace Witkoff In the evolution of pumps, the air-operated diaphragm pump is a more recent technology, if you consider 60 years since its invention recent. This compares with the lobe, centrifugal and gear technologies that were developed more than 100 years ago. Speaking of recent diaphragm-pump developments, the quaternary (four-piston) diaphragm pump, one that… Read more »

The Benefits of Full-Stroke Integral Piston Diaphragms


By Rob Jack The heart of the air-operated double-diaphragm (AODD) pump is its diaphragms. They must be flexible enough to handle millions of pumping cycles without failing and be compatible with any number of different liquids or particulate-laden slurries. When used in hygienic-manufacturing operations, such as food/beverage, personal care or pharmaceutical, the diaphragm has another… Read more »

AODD Pumps Can Provide Flexibility for Multiple Mining Operations


This technology can tackle basic dewatering applications and precise electrowinning processes. By Greg Duncan The early stages of mine development—including identifying the lodes and extracting the earth that surrounds them—are rugged operations that require equipment that can withstand long, hard days of work and function reliably in extreme weather conditions. This equipment includes both the… Read more »

Considerations for diaphragm selection


Selecting the right diaphragm for an air-operated double-diaphragm pump is a critical consideration for the user. This article looks at the factors to take into account when choosing the optimum diaphragm that will assure safe, efficient, cost effective and trouble-free operations. When selecting the a diaphragm for an air-operated double-diaphragm pump (AODD), previous experience is always… Read more »

Case Study: AMTROL Improves Filter Press Reliability and Efficiency with Wilden® Pro-Flo® SHIFT


NEW WILDEN AIR DISTRIBUTION SYSTEM (ADS) IMPROVES WASTE PROCESSING YIELD 40% AND CUTS OPERATING COSTS 60% By Kevin Hogue AMTROL’s West Warwick, RI, USA, manufacturing facility produces metal tanks for plumbing, heating, Freon, propane and water storage generating metal particulate waste that requires safe, efficient, economical disposal. When you produce the most reliable, longest-lasting products… Read more »

AODD Pumps Safely Handle Specialty Chemicals


A UAE company turned to air-operated double-diaphragm pumping technology to carefully and efficiently produce chemicals for the oil industry. By Anthony Monnet Wilden The chemical manufacturing industry has stringent requirements for process equipment. Production efficiency, product quality and operational safety for both on-site personnel and the environment are critical concerns for any manufacturer of specialty chemicals… Read more »

At EMCO, Air Diaphragm Pumps Help Optimize Warm, Clean-Room Operations


Upgraded capabilities expected to address upcoming USP and FDA regulation revisions  By Jack Pitts It’s said the Wright Brothers, Walt Disney, William Hewlett & David Packard and Jeff Bezos all started developing their ideas in a garage. Less well-known perhaps is that at least one chemical-industry innovator also got his start this way. In suburban… Read more »

A Perfect Fit for EMCO Chemical Distributors


If presented with the task of identifying the most appropriate setting in which to base a history of innovation and entrepreneurship in the United States in the 20th century, it would be hard to make a better choice than the garage. As legend has it, such well-known visionaries as the Wright Brothers, Walt Disney, William Hewlett… Read more »