Are you in the market for a Brewing Pump? There are several things to consider including the hygiene of your machinery and therefore your product, as well as the impact your brewing equipment could have on the flavour of your end product, for example, the impact of frothing.
As well as being partial to a beer or two, we have a team of pump specialists at Tapflo UK who have the knowledge to ensure you’re getting the best from your Brewing Pump, including continued support and site visits if required – we’ve got your back!
I’m looking for a Brewing Pump, is a Centrifugal Pump or a Positive Displacement Pump better?
In the brewing industry, Sanitary Centrifugal Pumps are the most commonly used pump and are generally employed for the transfer of low viscosity fluids with minimal solids concentration at high volumes and relatively low pressures (less than 7 bar). Examples of applications would be:
- Hot Wort Transfer
- Hot Liquor Transfer
- CIP pumping & scavenging
- Tank to Tank Transfer
- Tank cleaning
Positive Displacement Pumps commonly used in the brewing industry consist of Rotary Lobe, Twin Screw, Flexible Impeller, Progressing Cavity, Air Operated Diaphragm & Peristaltic. These are generally employed to transfer thick fluids with high solids concentrations at elevated pressures with relatively low flow rates and where flow accuracy is required. Examples of applications would be:
- Mash Recirculation
- Liquid Sugar Transfer
- Syrup Transfer
- Yeast Slurry Transfer
- Bottling, Casking & Canning
All have their own specific design features and benefits and vary in initial cost vs cost of ownership and complexity in design and maintenance. Tapflo is capable of supplying all of the above and our team are more than happy to discuss the options available to best fit the requirements to the job in hand.
What types of pumps can I use for pumping hot wort?
Generally, Stainless Steel Centrifugal Pumps are used for the pumping of hot wort, however, your brewing pump needs to be able to withstand the temperature of the fluid, be capable of handling the suspended solids within the wort, be suitable for CIP (Clean in Place) and have a suitably selected and protected mechanical seal.
When you are pumping a sugary fluid at high temperatures, the mechanical seal can be susceptible to thermal shock and also seal faces can stick together if not properly flushed or cleaned. Most “cost-effective” brewing pumps that don’t have a flushed mechanical seal require a cooling down period before they are cleaned with a warm caustic solution, however, Tapflo’s CTH and Pomac Pumps’ CPC series of Centrifugal Pumps can be supplied with a flushed seal configuration to constantly clean the faces of the seal and avoid cooling down periods. Tapflo provides a more effective pump and more efficient use of your time!
Both the CTH and CPC series of Centrifugal pumps are hygienically rated with Open Impellers that are capable of handling suspended solids and fluid temperatures of up to 180ºC. Alternatively, we also have a vast range of Sanitary Air Operated Diaphragm (AODD) Pumps which are capable of fluid temperatures up to 110ºC, these AODDs don’t feature mechanical seals and can also pass solids – we’ve got all bases covered!
How do I reduce foaming and agitation when transferring beer to our fillers?
As Centrifugal Pumps are the most commonly used pump within the brewing industry they are also widely used on filler transfer applications for Bottling, Casking & Canning. However, Centrifugal Pumps transfer the kinetic energy into the fluid to move it and operate at high speed (1450-2900 rpm) which means that beers tend to froth and foam as oxygen is introduced into them, which ultimately kills the flavour. When it comes to finally package the product the most important priority is the flavour and quality, therefore, pumps which operate at much lower operating speeds and which don’t impart kinetic energy into the fluid are the most suitable for these types of applications. Examples of these types of pumps are:
- Sanitary Air-Operated Diaphragm Pumps
- Sanitary Lobe Pumps
- Progressing Cavity Pumps
- Flexible Impeller Pumps
As the above can be operated at much lower operating speeds and the flow rates can be adjusted whilst maintaining a relatively constant pressure the beer can be treated gently and the speed of the pump can be set to avoid agitation and foaming which enables the producer to guarantee the flavour of their product and also extend the shelf life.
What Brewing Pumps do Tapflo typically recommend?
Here at Tapflo, when a customer is looking for a brewing pump, we typically recommend our CTH Hygienic Centrifugal Pump or a Flexible Impeller Pump.
Tapflo’s Hygienic Centrifugal Pumps are FDA approved, manufactured from Stainless Steel AISI 316L and electropolished to Ra <0.8 as standard, ensuring that the whole pump is fully sanitary. The high quality material and electropolished finish reduces the risk of crevasses on the steel’s surface of the pump’s internal which limits the risk of bacteria growth within these crevasses.
Want a little bit more information on the importance of using an FDA approved pump as part of your brewing operation? Our Sales Executive Luke explains all, ‘Why Shouldn’t You Use Standard Centrifugal Pumps in the Brewing Industry?’
Tapflo UK supply Flexible Impeller Pumps that are the perfect solution when searching for a Brewing Pump, in particular, they are suited to micro-breweries and small breweries as they are an excellent alternative to a CTH Pump. These pumps are cheaper investment initally than a CTH Pump and are easier to operate and maintain for smaller organisations. Flexible Impeller Pumps are ideal as Brewing Pumps because they can handle smaller flow rates at a high pressure and feature FDA compliant parts, for a pump that meets high hygiene ratings, we recommend the Tapflo CTH.
How do I maintain the temperature of my syrup to ensure it doesn’t thicken up too much causing damage to my pump and system?
Tapflo’s Twin Screw Pump, Lobe Pump and Air-Operated Diaphragm Pumps are all capable of being delivered with Heating Jackets which are fed by hot water or steam to maintain fluid temperature to the desired point to ensure that the viscosity of the syrup never drops below a set point. The product within the heating jacket never comes into contact with the syrup, therefore maintaining its integrity, quality and consistency. Our Peristaltic Pumps can also be supplied with electrically driven heating jackets upon request.
If you’re looking for a quick summary of Pumps within the Brewing Industry, check out Tapflo’s 7 Brewing Pump Tips