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September 2018
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  Dear Customer,


We are excited to, once again, be exhibiting at WEFTEC this October 1st to 3rd in New Orleans. Join us at booth# 2129 in Hall "C" to discuss your difficult pumping application and learn how ABEL can provide you the best pump solution for your difficult media application.

Follow us on LinkedIn for the latest news and what's happening at ABEL Pumps.

Do you have an application that you would like showcased in our next newsletter? Tell us about your application by emailing us at mail@abelpumps.com or by phone at 1-412-741-3222


Come check us out at Power-Gen International at booth# 3916 this December 4th to 6th for another chance to meet the ABEL team and discuss how we can provide you the best pump for your difficult pumping application.


Municipal Sludge Application

After decades of dependable service transferring difficult sludge, ABEL model 404 pumps are replaced with their more modern successor.

Go to the full article HERE

  Autoclave Feed

When choosing a pump for autoclave feed, the ABEL model HMT and HMQ pumps are tough enough to get the job done. Want to learn more?

Go to the full article HERE


2 ABEL HMD-G-80-100 Transferring Municipal Sludge 13 Miles


ABEL HMT with Stainless Steel for Abrasive Media



13 Mile Pipeline Application at a Southern United States Municipality


In the early 1990s a municipality in the Southern United States needed to transfer a sludge consisting of 3% solids concentration 13 miles away to another facility. ABEL's model 404 hydraulic membrane pump was selected. It provided steady and stable service for a couple of decades when it was decided to upgrade the pumps along with other plant equipment. The application required up to 240 GPM through a 10" pipe. Average pressure ranged from 110 to 180 PSI.

The new pumps are Abel model HMD-G-80-1000. They were installed in 2014. They are capable of pumping over 300 GPM at up to 232 PSI. HDPE pipe is installed. The new pipe is 8" OD and 6" ID. Flows tend to be around 180 GPM early in the week and about 80 GPM near the end of the week. Depending on the flows, pressure reaches as high as 200 PSI.


Abel's HMD-G-80-1000 is a hydraulically actuated piston diaphragm pump. The pump has two diaphragms and one piston. The piston strokes are 180 degrees apart. The pump has two suction ball check valves and two discharge suction check valves. Pump efficiency exceeds 86%.


The old pumps are kept serviceable to act as standbys.

The plant pumps around the clock. One pump in service and another standby. Pumps are switched at time intervals. The pumps consume two diaphragms and approximately a half dozen check valve balls per year. Maintenance costs for parts are less than $5,000 annually.



Original ABEL Model 404 Pumps


2 ABEL HMD-G-80-1000


The ABEL HM Pump Platform for Autoclave Feed
By David Donato


As an engineering student I became interested in fluid mechanics and the role that fluid transfer plays in our lives. From the HVAC systems in our homes that circulate conditioned air to keep us comfortable throughout the seasons to waste water treatment plants that make sure we are kept safe from harmful wastewater contaminants, we rely on the transfer of fluid to make our lives comfortable and safe. Often the processes that involve fluid transfer or conditioning goes unnoticed by us during our day to day activities. However, one thing is certain, there is a pump or pressure differential somewhere in the system that is transferring fluid for our benefit.

Now, as an Inside Sales Engineer for ABEL Pump Technology, a positive displacement pump and pump technology company that has been providing industry expertise for more than 70 years, I am exposed to many fascinating processes previously unknown to me. One of these processes, in mining, is the autoclave cycle used in mineral extraction from sulfide ore.


Within the autoclave cycle is the specialized piece of equipment known as an autoclave that must be fed at specific, constant and often times high pressures and flow rates, requiring a very specialized type of pump.

Simple Autoclave

Extracting gold, copper or other minerals from sulfide ore is an extensive process. The autoclave cycle for mineral recovery is a component used in this process. Transferring the ore slurry through the autoclave circuit is not a job that can be left to just any pump. A positive displacement, hydraulic piston-diaphragm (or piston-membrane) pump is the best tool for the job.

The autoclave circuit starts after the sulfide ore has first been ground, classified by using hydro cyclones and then to a floatation process, and then thickened. The type of reagents used in the autoclave vary depending on the sulfide ore from which a mineral is being extracted. This can result in a slurry with a high solids concentration. The exact operating conditions of an autoclave will vary depending on the sulfide ore however, during some autoclave circuits, temperatures can reach more than 200°C and pressures can rise to more than 800 PSI (55 bar). The temperature and pressure of the slurry must be considered when choosing materials for the positive displacement piston diaphragm pump.

Many positive displacement pumps can easily handle the high flow rate and pressure required by the autoclave process. However, few pumps can also handle abrasive slurry like the ABEL model HM piston-diaphragm pump. As with temperature and pressure, flow rates for autoclaves vary, usually from 100 GPM up to 330 GPM (22 m3/h – 75 m3/h) or more. The flow rate and pressure fall well within normal operating capabilities of some of the larger positive displacement pumps.


Triplex Positive Displacement Pump, Top View

A triplex positive displacement, hydraulic piston diaphragm pump like the ABEL model HMT, is a three piston, single acting pump. The pistons are 120°out of phase from each other to maximize their natural dampening effect. During each stroke cycle of the crankshaft, each piston acts on a volume of hydraulic fluid, driving one of three diaphragms into a hermetically sealed pumping chamber. The decrease in volume of the pumping chamber discharges slurry through the discharge check valve.



Triplex Positive Displacement Pump, Side View

A quadraplex pump, or more accurately, a duplex double-acting pump like the ABEL model HMQ is another high flow rate, high pressure hydraulic piston diaphragm pump used in autoclave feed. Unlike a triplex pump a duplex-double acting pump uses only two pistons to actuate four diaphragm housings. The suction and discharge concept is the same as the triplex piston when acting on a single volume of hydraulic fluid. The difference with the duplex-double acting pump is that one piston acts on two diaphragm housings on the same side of the pump. Whether the piston acts in the forward stroke or aft stroke, hydraulic fluid is being acted on in both diaphragm housings causing both a suction and discharge action in the two diaphragm housings.


For help with your difficult application, contact us at:
ABEL Pumps, L.P. - 600 N. Bell Ave, Bldg. 2, Suite 250 - Carnegie, PA 15106
Tel. 1-412-741-3222 - Fax 1-412-741-2599 - mail@abelpumps.com - www.abelpumps.com

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