Pumps for heat transfer technology - Centrifugal pumps - TOE-G and TOE-M

Nov 4, 2026

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Heat transfer pumps for circulating organic or synthetic heat transfer oils and hot water, focusing on centrifugal pump series TOE-G and TOE-M. The document describes two seal approaches: uncooled mechanical sealing or magnetic coupling, along with associated advantages like reduced leakage and longer lifetime for magnetic systems. It includes modular design features, interchangeability for streamlined spare parts, and key operating limits such as temperature ranges, heads up to 400 m, and flow rates up to 750 m³/h, plus representative applications across industries.

LanguageEnglish

CategoryTechnology

FormatPDF

Pages12

Reading Time30 min

AccessFree to download

Pumps for heat transfer technology

Centrifugal pumps and seal options

Series TOE-G and TOE-M specifications

Regenerative turbine pumps

Main applications

Test stands and measurement capabilities

How to choose the right pump

Pumps for heat transfer technology Centrifugal pumps with uncooled mechanical seal or magnetic coupling Regenerative turbine pumps with magnetic coupling Investigation and development with recent test stands Computer-controlled and fully automated test stands on the premises of Speck Pumpen in Roth. Measuring of hydraulics, power requirements, axial thrust, vibrations and NPSH values. Heads of up to 400 m and flow rates of up to 750 m³/h are possible. Thermal oil test stand with pump surveillance system on the premises of Speck Pumpen in Roth. Investigation of impacts of high temperatures up to 350 °C on the lifetime of the pumps. Your contacts at Speck Pumpen Speck Pumpen Systemtechnik GmbH Regensburger Ring 6-8 91154 Roth / Gemany Tel: +49 9171 809 0 Fax: +49 9171 809 10 [info@speck.de](info@speck.de)[ ](info@speck.de)[www.speck.de](www.speck.de) International representatives 􀃆 page 12 Subject to technical modifications and errors. 05/2014 | 1096.1212 Pumps for heat transfer technology Centrifugal pumps Series TOE-G and TOE-M Consistent design modular system with volute casings Choose from six different designs with mechanical seal or magnetic coupling. Developed for circulating organic or synthetic heat transfer oils in heat transfer systems in accordance with DIN 4754, as well as hot water. Suitable for pumped media with low amounts of non-abrasive impurities. Heat transfer oil -40 °C to 350 °C | Hot water | up to 160 °C,
up to 180 °C on request | | --- | --- | | Nominal pressure | PN 16 | | Hmax. (2900 min-1 ) | 100 m | | Qmax. (2900 min-1 ) | 550 m3/h | Casing Spheroidal graphite iron Regenerative turbine pumps Series NPY-MK and CY-MK Tried and tested and compact close-coupled pumps with top/top casings and magnetic coupling Developed for transporting and circulating organic or synthetic heat transfer oils and hot water. Suitable for pumped media with low quantities of non-abrasive impurities. Heat transfer oil up to 350 °C | Hot water | up to 180 °C, higher temperatureson request | | --- | --- | | Nominal pressure | up to PN 24 | | Hmax. (2900 min-1 ) | 90 m | | Qmax. (2900 min-1 ) | 12 m3/h (200 l/min), 24 m3/h (400 l/min) on request | Casing Stainless steel / spheroi dal graphite iron Main applications » Tempering in plastics and die casting industry » Baking ovens, large frying units as well as in the production of edible oil and dry masses for the food and feedstuff industries » Heating calenders and melting containers in the leather and rubber industry » Heating stirring and mixing vessels in the production of paints and varnishes » Heating tank storage facilities on stationary and FPSE platforms, as well as in tankers » Heating press lines in the wood and pulp industry » Flat glass production » Solar power plants and ORC processes 05/2014 | 1096.1212 Subject to technical modifications and errors. Find the right pump for your system Choose the best solution from six ranges Each heat transfer system is unique in its own way-on some, the sealing principle is key, on others the vertical installation frame or perhaps the special properties of the medium. With the heat transfer pumps from Speck Pumpen you can choose from six ranges with different characteristics and find the best solution for your system. Series TOE-G with mechanical sealing » Water up to 160 °C » Water up to 180 °C on request » Oil up to 350 °C In comparison to pumps with magnetic coupling: » More favourable in purchase and repair » Less energy consumption with the same operating point Different characteristics 􀃍 TOE-GN | TOE-MN 􀃎 Bearing bracket / process design Base plate Dismantling of the bearing bracket possible without moving the motor Alignment / checking of the coupling required before start-up 􀃍 TOE-GA | TOE-MA 􀃎 Bracket version No alignment of the coupling required before start-up Space for disassembling the cartridge ins

FAQs

What media are the TOE-G and TOE-M heat transfer pumps designed to handle?

They are developed for circulating organic or synthetic heat transfer oils in heat transfer systems, as well as hot water.

What sealing principles are offered for the centrifugal pumps?

The document presents options with uncooled mechanical seal or magnetic coupling, including comparative benefits for each sealing approach.

What are the stated performance limits for heads and flow rates?

Heads up to 400 m and flow rates up to 750 m³/h are possible, with additional limits listed in the temperature and pressure specification tables.

Nov 4, 2026

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