Hygienic centrifugal pumps – CTH series
CTH series are single-stage centrifugal pumps with open or semi-open impellers designed for hygienic applications. Made of AISI 316L stainless steel and electro-polished to Ra<0.8, CTH centrifugal pumps offer excellent mechanical strength and can handle media temperatures up to 180°C. Their simple design is very durable and corrosion resistant, while being easy to maintain, which minimizes downtime.
The Tapflo CTH centrifugal pump is characterized by a high standard of surface finish and DIN 11851 hygienic connections as standard. It is designed for hygienic applications in the food, pharmaceutical and chemical industries, where hygiene and the ability to completely drain the pump are key.
FAST FACTS
FEATURES & BENEFITS
CTH series are single-stage centrifugal pumps with open or semi-open impellers designed for hygienic applications. Made of AISI 316L stainless steel and electro-polished to Ra<0.8, CTH centrifugal pumps offer excellent mechanical strength and can handle media temperatures up to 180°C. Their simple design is very durable and corrosion resistant, while being easy to maintain, which minimizes downtime.
The Tapflo CTH centrifugal pump is characterized by a high standard of surface finish and DIN 11851 hygienic connections as standard. It is designed for hygienic applications in the food, pharmaceutical and chemical industries, where hygiene and the ability to completely drain the pump are key.
| Pump capacity: | 74 m3/h (1200 l/min) | |
| Max. discharge pressure: | 10 bar | |
| Max size of solids: |
6 mm | |
| Temperature: | 90 °C (180 °C for bare shaft version) | |
| Viscosity: | 200 mPa·s | |
| Casing construction materials: | AISI316L stainless steel, glass-blasted to Ra<0.8 μm | |
| Impeller construction materials: | AISI316L stainless steel, glass-blasted to Ra<0.8 μm | |
| Mechanical seal: | single: Ceramic/Graphite (standard) or SiC/SiC or SiC/Graphite | |
| O-rings: | EPDM, FKM, FFKM, NBR, FEP compliant with FDA and EC 1935/2004 | |
| Electric motor: | IP55, IEC flange B3/B14 (B3 for bare shaft version) – available with ATEX certificate Eex e or Eex d | |
| Available sizes and motors: | ||
| Model | Motor power KW |
IEC Motor size |
| CTH AA-03 | 0.37 | 71 |
| CTH AA-05 | 0.55 | 71 |
| CTH BB-07 | 0.75 | 80 |
| CTH CC-15 | 1.5 | 90 |
| CTH CC-22 | 2.2 | 90 |
| CTH CE-22 | 2.2 | 90 |
| CTH DD-40 | 4.0 | 112 |
| CTH DF-40 | 4.0 | 112 |
| CTH EF-55 | 5.5 | 132 |
| CTH EG-55 | 5.5 | 132 |
| CTH EF-75 | 7.5 | 132 |
| CTH EG-75 | 7.5 | 132 |
| CTH AA-024 | 0.25 | 71 |
| CTH BB-054 | 0.55 | 80 |
| CTH CC-114 | 1.1 | 90 |
| CTH CE-114 | 1.1 | 90 |
| CTH DD-224 | 2.2 | 100 |
| CTH DF-224 | 2.2 | 100 |
| CTH DG-224 | 2.2 | 100 |
| Industry | Application example |
| Food | Edible oil, alcohols, dairy products, juices, detergents, water, pumping liquids in the CIP process |
| Chemical | Chemicals and solvents |
| Mechanical | Chemical reagents, suspensions, oils, greases, coolants and detergents. Dosing of acids and bases. |
| Heat exchangers | Liquid circulation in heat exchangers. |
The two main parts of a centrifugal pump are the impeller with vanes and the pump casing. Liquid enters the pump through the suction connection near the center of the rapidly rotating impeller. The liquid on the suction side moves along the impeller axis and, due to the centrifugal force generated by the vanes, is thrown radially outwards into a chamber in the casing. The casing gradually expands spirally towards the discharge nozzle, which reduces the liquid velocity and thus increases the pressure (diffuser effect). At the same time, as the liquid is thrown radially outwards by the impeller towards the discharge connection due to centrifugal force, the pressure at the center of the impeller drops, enhancing the suction effect of the liquid into the pump, which enables a continuous liquid transfer process.
Want to know more? Check out our compendium of knowledge about centrifugal pumps!
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Open Impeller CTH series pumps have an open impeller with a robust design, high efficiency and low Net Positive Suction Head required (NPSHr). CTH series pumps with an open impeller are both easy to clean and suitable for pumping liquids containing solids. |
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Semi-Open Impeller CTH series pumps can be equipped with a semi-open impeller. Compared to the standard open impeller, the semi-open impeller provides more stable operation, lower noise levels, less vibration and a more robust design. The semi-open impeller is recommended when hard solids may be present in the pumped liquid. |
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Mechanical Seal |
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| Single Mechanical Seal
The mechanical seal spring is not in contact with the pumped liquid, which makes the internal pump chamber fully cleanable. |
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Variety of Connections Threaded BSPT or flanged connections according to EN 1092-1 or ANSI 150 Lbs. |
| Casings available in Ra<0.8 μm
Wetted and external parts glass blasted to Ra<0.8 μm |
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| Lubricated Seal
An excellent option when the product tends to coagulate or crystallize. The oil tank is connected to the mechanical seal chamber. |
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| Heating Jacket
Excellent protection for mechanical seals where there is a possibility of product solidification. Also used when the pumped product must maintain a specific temperature, high or low. |
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| Hygienic Cover
The motor cover made of polished AISI 316L steel protects the motor from external factors. Mounting Brackets The pump unit can be mounted on a base, which can be permanently fixed to the foundation. |
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| Extended Shaft Version
An excellent solution for pumping hot liquids, such as oil or paraffin, at temperatures up to 180°C. Complete pump unit mounted on a base with a coupling and cover. |
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| Drain Plug
The plug in the pump casing allows for complete emptying of the pump head chamber. |
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| Trolleys for Centrifugal Pumps
Do you want to use one pump in multiple locations in your facility? Do you have technological processes spread throughout the factory? We offer mobile solutions adapted to most Tapflo pumps. Thanks to the possibility of free transport of the pump, the use of the device is almost unlimited. Pump trolleys are available in several sizes, as well as in hygienic and industrial versions: Features and Benefits:
Want to know more? Check out the product page for Tapflo pump trolleys. |
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| Hygienic High-Performance Centrifugal Pumps | CTX H series
Designed for hygienic applications, including in the food, dairy, chemical, and pharmaceutical industries. Equipped with hygienic connections compliant with DIN 11851 as standard and mechanical seals and elastomers with FDA and EC 1935 approval. Wetted parts are electro-polished to Ra <0.8 μm as standard (Ra <0.5 μm on request) and external surfaces are glass-bead blasted to Ra <3.2 μm. Want to know more? Check out the CTX H hygienic centrifugal pumps product page. |
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| Industrial Centrifugal Pumps | CTI series
Designed for boosting pressure, dosing, loading and unloading, tank cleaning, and metering in the chemical, petrochemical, and machine manufacturing industries. Characterized by excellent mechanical and corrosion resistance, they can be ATEX compliant on request. Want to know more? Check out the CTI industrial centrifugal pumps product page. |
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| Self-Priming Centrifugal Pumps | CTS H series
Thanks to Want to know more? Check out the CTS H self-priming centrifugal pumps product page. |
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| Vertical Centrifugal Pumps | CTV series
Thanks to Want to know more? Check out the CTV vertical centrifugal pumps product page. |
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| Plastic Centrifugal Pumps | CTP series and CTM
Thanks to Want to know more? Check out the CTP plastic centrifugal pumps product page and CTM plastic centrifugal pumps with magnetic drive product page. |
| Pump capacity: | 74 m3/h (1200 l/min) | |
| Max. discharge pressure: | 10 bar | |
| Max size of solids: |
6 mm | |
| Temperature: | 90 °C (180 °C for bare shaft version) | |
| Viscosity: | 200 mPa·s | |
| Casing construction materials: | AISI316L stainless steel, glass-blasted to Ra<0.8 μm | |
| Impeller construction materials: | AISI316L stainless steel, glass-blasted to Ra<0.8 μm | |
| Mechanical seal: | single: Ceramic/Graphite (standard) or SiC/SiC or SiC/Graphite | |
| O-rings: | EPDM, FKM, FFKM, NBR, FEP compliant with FDA and EC 1935/2004 | |
| Electric motor: | IP55, IEC flange B3/B14 (B3 for bare shaft version) – available with ATEX certificate Eex e or Eex d | |
| Available sizes and motors: | ||
| Model | Motor power KW |
IEC Motor size |
| CTH AA-03 | 0.37 | 71 |
| CTH AA-05 | 0.55 | 71 |
| CTH BB-07 | 0.75 | 80 |
| CTH CC-15 | 1.5 | 90 |
| CTH CC-22 | 2.2 | 90 |
| CTH CE-22 | 2.2 | 90 |
| CTH DD-40 | 4.0 | 112 |
| CTH DF-40 | 4.0 | 112 |
| CTH EF-55 | 5.5 | 132 |
| CTH EG-55 | 5.5 | 132 |
| CTH EF-75 | 7.5 | 132 |
| CTH EG-75 | 7.5 | 132 |
| CTH AA-024 | 0.25 | 71 |
| CTH BB-054 | 0.55 | 80 |
| CTH CC-114 | 1.1 | 90 |
| CTH CE-114 | 1.1 | 90 |
| CTH DD-224 | 2.2 | 100 |
| CTH DF-224 | 2.2 | 100 |
| CTH DG-224 | 2.2 | 100 |