The CTP Mechanically Sealed Plastic End Suction, Close Coupled, Single Stage Centrifugal Pumps feature a Semi-Open Impeller available in either Glass Reinforced PP or PVDF. They have been specifically designed for pumping chemicals containing particles in suspension up to 3 mm in ø & concentrations up to 10%. As a result, they have been fitted with high quality mechanical seals with Rotating Elements in either SiC or Graphite, Stationary Elements in SiC & Hastelloy C-276 Springs. As the seal is located on the dry side of the pump, all metallic parts are therefore protected against corrosion and no elastic bellows are required. Shafts are in AISI 316L as standard or Hastelloy C-276 and protected by plastic sleeve & nut compatible with the pump materials. Should any leaks occur through the seal there is a special drainage port fitted to the back casing which allows for leakages to be collected via a PVDF barb connector. This prevents the process fluid from coming into contact with the motor and shaft.
The CTP range currently consists of 2 set sizes, the CTP32 & CTP50 which cover flow rates up to 28 m³/hr and heads up to 19 m. Max process fluid temperatures range from 70 – 90ºC depending on the pump materials and max viscosities up to 200 cPs.
In order to start the pump, the casing has to be filled with liquid before start-up and have a positive suction head to operate efficiently. The NPSHr (Net Positive Suction Head Required) can be provided during the selection and assessment of the pump for your intended application.
Upon start-up, the liquid enters the pump casing axially onto the eye of the impeller. The rotating impeller generates a centrifugal force accelerating the liquid through the pump casing and into the discharge piping. As the fluid is accelerated by the impeller and thrown towards the discharge outlet a low pressure point is generated at the eye of the impeller effectively drawing fluid from the suction side to the pump and continuing the pumping cycle.
CTP Pumps are typically used for tank to tank transfer applications, they can also, however, be used for pressure boosting, dispensing, loading and offloading, tank cleaning, batching & metering, when used in conjunction with some of our wide range of control accessories.
The CTP Range is ideally suited to the following applications:
Chemical Transfer: Storage tanks to smaller vessels and containers.
Surface Treatment: Transfer, Filtration & Circulation round Surface Treatment Baths
Food & Beverage: CIP Processes
Water Treatment: Dosing & Transfer of Acids, Alkalis used in Cleaning Chemicals & Nanofiltration
Chemical Manufacturing: Transfer & Pumping of Chemicals & Industrial Detergents
Demineralisation: Circulation & Transfer of Demineralised Water
Photo Processing: Transfer of Photo Developmental Chemicals & Integration into Processing Machines
Liquid Crystal Manufacture: Transfer & Circulation of Concentrated Acids & Alkalis with Crystals in Suspension
Can handle highly corrosive liquids also containing solids and metallic particles. Pumps can handle high temperature liquids, Alkali and acids. The version in PP-GF (glass fibre reinforced polypropylene) provides great mechanical strength and allows liquid temperatures up to 70°C. The PVDF version has superior chemical resistance and allows temperatures up to 80 – 90°C.
Allows pumping liquids with particles up to 3mm and 10% in concentration. Compared to the pumps with magnetic coupling, metallic particles are no obstacle for the CTP Pumps. A semi-open impeller also eases the transfer of liquids with higher viscosity.
The wetted components are non-metallic injection moulded thermoplastics enabling excellent corrosion resistance. The shaft is protected by means of a plastic sleeve and nut compatible with the pump housing material.
The special revision hole in the back of the casing provides a drainage from the mechanical seal in case any leakage occurs. This prevents the motor and shaft from coming into contact with the pumped liquid. The PVDF barb connector allows plug a hose and route the liquid out of the pump.
The spring is located on the dry side of the pump therefore all metallic parts are protected against contact with the liquid. This means no elastic bellow is required.
CTP Mechanically Sealed Plastic Centrifugal Pumps can be supplied with 4 different connection options:
5I – Impeller Trimming
Impellers can be trimmed, which means reducing their outside diameter, resulting in a reduced circumferential speed inside of the pump and therefore capacity. This operation can be carried out to ensure that the pump matches the required duty point.
Throttling the pump can allow for flow and pressure control of the pump by moving up and down the performance curve by means of changing the system pressure. This, however, is an inefficient method of pump control. Reducing the impeller diameter is an easy and effective way of permanently reducing both the flow and head capabilities of the pump without changing the rotational speed of the unit and wasting power.
Impellers can be trimmed by a maximum of 10 mm from the maximum nominal diameter.
Trolley Mounted Units can be supplied with motor sizes up to 4.0 kW, with 2 or 4 wheels (2 fixed, 2 free), mounting plate for control apparatus, hose wrap points & / or fitted with a variety of dedicated control & protection features.
The units can also be hygienically rated for use in food environments and fitted with pneumatic wheels for use on uneven surfaces. The result is a mobile range of pump units providing a solution to a widespread of technological processes. The portability of the units allows easy movement to various locations with almost limitless applications.
With Tapflo’s customised Mobile Solutions, the user is provided with not only a product but functionality. Based on our extensive experience with pumping skid units, we deliver complete “made to measure” mobile units, ready to use out of the box.
|Casing||PP-GF (30%) or PVDF|
|Back Casing||PP or PVDF|
|Impeller||PP or PVDF|
|Lantern (Not Wetted)||PP|
|Mechanical Seal||Rotating Part: SiC / Graphite|
Stationary Part: SiC
Spring: Hastelloy C-276
|O-Rings||EPDM, FKM, FFKM, FEP/FKM|
|Shaft||Stainless Steel AISI 316L (Std.) or Hastelloy C-276|
|Motor||IEC standard, 2 Pole, 1 & 3 Phase (Size dependent), 50-60 Hz, IP55, IE3 Premium Efficiency Class, B34 Mounting, PTCs Optional, Safe Area|
|Pressure Ratings||PP pumps: PN6 at 20°C, PN2 at 70°C|
PVDF pumps: PN6 at 20°C, PN2 at 90°C
|Temperature Ranges||PP Pumps: 0-70ºC|
PVDF Pumps: 0-90ºC
|Kinematic Viscosity||200 cSt (max)|
|Solids||3 mm ø, 10% Concentration, 800 Vk Hardness|
Here at Tapflo UK, our sales team can provide you with all the necessary information about our Centrifugal range to suit your application. Get in touch today to find out more.
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Tapflo UK bring a wealth of knowledge and passion to the pump industry, from humble beginnings twenty years ago to a market leader for the supply of industrial process pumps today.
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Tapflo Group is an independent, family-owned, European manufacturer and global supplier of Industrial Pumps that has been operating for 40 years.
We are a leading manufacturer of Air Operated Diaphragm Pumps, Centrifugal Pumps and other industrial process equipment, operating across 75 countries.
Tapflo UK has been operating since 1998, now working nationally with end-users and pump distributors. We offer a wide pump portfolio to the UK for almost any application and installation, including bespoke pumping systems designed by our in-house Engineering Team.