Manufacturer’s Spotlight: Speck Pumps

Speck Pumps, called “Speck Pumpen” in its native land, Germany, is one of the world’s best manufacturers of liquid ring vacuum pumps, centrifugal pumps, boiler feed, side channel, heat transfer and submersible pumps. At Pump Solutions Australasia, we are the Speck Pumps representative for sales, repairs and maintenance.

Speck Pumpen was established in Roth, Germany in 1909 by Daniel Speck and his five sons. For 106 years, they have been building and maintaining a global reputation for high-quality products that are specific to various sectors of industry.

Speck Pumps Liquid Ring Vacuum Pump

Liquid Ring Vacuum Pumps: What’s Available

Speck manufactures two configurations of liquid ring vacuum pumps: close coupled and base plate, also called “long coupled.” Both are available in many different styles, depending upon the sector and use for which they are designed. The smallest Speck liquid ring vacuum pump has 0.12kW of power and an output of 2.2 m3/hour. The largest has 45 kW of power and an output of 1600 m3/hour.

Speck liquid ring vacuum pumps are available with stainless steel, brass or cast iron construction. Combinations of any of the three elements are also available. The single stage pumps reach vacuum levels of up to 33 mbar, while the two stage pumps are all capable of a 33 mbar vacuum.

Speck is also known for their heat transfer pumps, which can pump water in temperatures up to 350 degrees with differential heads as high as 100 metres and volumes of 100 m3/hour. Speck water pumps are available with a standard mechanical seal design or with a magnetic drive that doesn’t require seals.

Smaller Speck Pumps are usually peripheral vane pumps which offer high head and low flow capabilities. For higher volumes, conventional impeller pumps are supplied. Vertical spindle pumps are also appropriate for some heat transfer applications.

Contact Us

To learn more, call Pump Solutions Australasia today. We are a family business that has been running a tight ship since 1990. We import the best pumps from around the world because we know you can’t afford anything but the best. Call 1300 922 973 today.

Speck Pumps Expands Heat Transfer Pump Series

We are happy to announce that our line of Speck pumps has just been expanded yet again. In the TOE-G and TOE-M series, we now have frame size 100-200. In addition, Speck is currently testing a 100-160, 100-250, and 125-200 frame sizes.

Pool Pump and Heating EquipmentSpeck has added what they feel are very important improvements in the pump casings for the new frame sizes: centre-lined suspension and double volute casing. The engineers at Speck believe that both features will greatly extend the pumps’ durability.

Double volute casing is more durable because it decreases the radial forces within the pump. According to Speck, the distribution of static pressure on the impeller is uneven, and it causes radial forces that can produce undue wear and tear on the sleeve bearings, and reduce their durability. This force increases in proportion to the size of the impeller. In other words, the larger the impeller, the greater the radial forces: this means more wear and tear is put on your pump.

To counteract excessive radial force, Speck is now using a double volute casing on their larger pumps. The casing has double spirals, which significantly reduce the amount of radial force, which causes less wear and tear on the radial and axial bearings. This, in turn, extends their durability.

Speck engineers have found through extensive testing that double volute casing is essential when operating a larger pump with a rotational speed of 3500 rpm or higher.

Speck has also found that when the heat transfer oil heats up to 350ºC, it causes the volute casing to expand. This expansion causes the pump shaft to bend and incline, pulling it in a different direction from the motor shaft, which remains parallel to the base plate. To make a long story short, the larger the volute casing, the more this heat expansion causes a problem.

To counteract this misalignment, Speck now uses centre-lined suspension for the volute casing. This removes all of the heat-related problems and fixes the misalignment caused by expansion. The new casings still correspond to the EN 733 standard for connection. Speck is the only company that currently offers centre-lined volute casing on their heat transfer pumps, and is in the process to converting all of their frame sizes to centre-lined suspension.