Overview
CTV is a single stage vertical centrifugal pump that is simple but very reliable in duty. The pump is specialized for transfer and circulation of various liquids from containers, sumps and tanks.
How they work
CTV is installed vertically with the motor above the liquid surface. In this way the pump does not need any mechanical seal that usually is a source for leakage problems. Further on the pump is designed to be dry running safe.
The simple design without bearings or mechanical seals grants for a pump that is usually maintenance free. CTV is also insensitive of solids, up to ?? mm are allowed (depending of pump size).
In many installations the CTV pump replaces a self priming pump. The pump head of the CTV is submersed in the liquid. The pump operates more reliable compared with a self priming pump. The submersion depth is 419-425 mm (depending on model) but may also be equipped with a suction extension.
Materials
CTV is manufactured from PP (polypropylene), PVDF or stainless steel AISI 316L.
PP
PP (polypropylene) is suitable for most type of chemicals at temperatures up to 70°C. Ideal for pickling baths and acid degrease solutions etc. Pumps in PP & PVDF
(click to enlarge)
PVDF
PVDF (polyvinylidene fluoride) has superior chemical and mechanical features. Ideal with hot acids up to 100°C, for example hot hydrofluoric acid.
Stainless steel pumps
The stainless steel version is ideal at higher temperatures, up to 100°C and in special applications like hot sodium hydroxide.
All wetted metal components are made from corrosion resistant stainless steel AISI 316L.
For special applications like handling of chromium nickel, electro polished models are available.
Pumps in stainless steel (click to enlarge)
Typical applications 
| Industry | Example of application |
| Surface treatment | Transfer and return pumping in galvanizing, hot zinc, pickling and oxidation processes |
| Water treatment | Transfer and return pumping |
| Heat exchangers | Return pumping in heat exchangers |
| Waste disposal | Emptying sumps |
Material of components Performance overview – PP or PVDF pumps
| Component | Material/Info |
| Pump casing and impeller | PP, PVDF or stainless steel AISI 316L |
| Casing O-ring | EPDM, FKM or FEP |
Performance overview – stainless steel pumps
Technical data
PP & PVDF Vertical pumps
| Dimension | CTV 25 | CTV 32 |
| A | 285 | 285 |
| B | 200 | 200 |
| E | 85 | 85 |
| F | 56 | 56 |
| G | 95 | 95 |
| H | 1” | 1 1/4” |
| J | 25 | 25 |
| K | 419 | 419 |
| L | 123 | 126 |
| M | 60 | 60 |
| N | 1” | 1 1/4” |
| Motor power | D | I |
| 0.55 kW | 196 | 213 |
| 0.75-2.2 kW | 214 | 267 |
| General characteristics | 25-wrz | 25-paź | 25-lis | 25-11.5 | 32-8.5 | paź-32 | 32-12.5 |
| Max capacity (m3/h) | 10.2 | 13.2 | 15.6 | 18.0 | 19.8 | 24.0 | 27.0 |
| Max head (m) | 10 | 14 | 16 | 19 | 10 | 17 | 23 |
| Motor power (kW) | 0.55 | 0.75 | 1.1 | 1.5 | 1.1 | 1.5 | 2.2 |
| Outlet dimension (male BSP) | 1” | 1” | 1” | 1” | 1 1/4” | 1 1/4” | 1 1/4” |
| Motor data | 3-phase, 2-pole (~2900 rpm), 380-420 VAC, 50 Hz, IP 55 | ||||||
| Max temperature | Pump in PP: 70°C, pump in PVDF: 100°C | ||||||
| Materials | |||||||
| Pump casing and impeller | PP or PVDF | ||||||
| Casing o-ring | EPDM, FKM or FEP | ||||||
Stainless steel Vertical pumps
| Dimension | CTV 20 | CTV 25 | CTV 40 | |
| A | 267 | 267 | 267 | |
| B | 207 | 207 | 207 | |
| E | 102.6 | 102.6 | 102.6 | |
| F | 36 | 50 | 66 | |
| G | 93.5 | 93.5 | 93.5 | |
| H | 1” | 1 1/2” | 1 1/2” | |
| J | 8 | 8 | 8 | |
| K | 420.5 | 420.5 | 425 | |
| L | 113.5 | 127 | 139 | |
| M | 60 | 60 | 60 | |
| N | 3/4” | 1” | 1 1/2” | |
| Motor power | D | I | ||
| 0.55 kW | 214 | 211 | ||
| 0.75-2.2 kW | 253 | 265 | ||
| General characteristics | 20-wrz | 25-9.8 | 25-9.8 | 40-12.5 | 40-12.5 | 40-13.5 |
| Max capacity (m3/h) | 12.0 | 17.0 | 17.0 | 19 | 34 | 20 |
| Max head (m) | 10 | 11 | 11 | 22 | 22 | 31 |
| Motor power (kW) | 0.55 | 0.75 | 1.1 | 1.5 | 2.2 | 2.2 |
| Outlet dimension (male BSP) | 3/4” | 1” | 1” | 1 1/2” | 1 1/2” | 1 1/2” |
| Motor data | 3-phase, 2-pole (~2900 rpm), 380-420 VAC, 50 Hz, IP 55 | |||||
| Max temperature | 100°C | |||||
| Materials | ||||||
| Pumpcasing and impeller | Stainless steel AISI 316L | |||||
| Casing o-ring | EPDM, FKM or FEP | |||||
Certificates
EN 10204 material traceability
The EN 10204 norm gives you a checklist and traceability of materials used in the equipment. 2.1 is a general statement of compliance with material specifications, while 3.1 provides specific track records all the way to the steel mill batch (normally only on metals in contact with the product).
CE conformance
A product classified as machinery that carries the CE mark fulfill the essential health and safety requirements of the EC Machinery Directive 2006/42/EEC.
