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Technical Expertise

Pump Specification & Design

Correctly specifying a new pump is vital if you are to achieve the necessary performance in your application.

Pumps that are incorrectly specified and designed can lead to issues such as regular downtime or frequent repair which can be costly for your business.

This is why at North Ridge Pumps we will work with you to fully understand your needs. We have a clear process for you to specify your requirements and have the design expertise to ensure that your pump requirement is as seamless as possible.

Download the Pump Specification Form Enquire Book a Callback

Having a pump that can easily adapt to changes in your process such as variations in fluid consistency, differing fluid types, suspended solids or having a unit made portable can increase the returns made on investment by up to 5 times through multi use.

With increasing material shortages, infrequent or personalised small batches in demanding time frames, price instability, or requirements for single use technology - having a pump which can easily adapt to your process demands can pay dividends.

North Ridge Pumps has a wealth of experience designing and supplying pumps to a variety of industries, for a large number of applications.

As a UK based manufacturer and distributor of pumps, we have helped clients from across the globe and our dedicated team is on hand to assist with your pump requirements.

With such a large number of pumps available, it can be daunting to correctly identify the right pump for your needs, whilst also ensuring such a decision future proofs your process.

13 Common mistakes of incorrect pump selection

  1. Under or over-sizing of equipment
  2. Chemical incompatibility
  3. Pump speed too high
  4. Incompatible with fluid abrasively
  5. Insufficient cooling
  6. Lightweight and not heavy duty design
  7. Pump inlet demands (NPSHr) too high
  8. Unable to handle changes in fluid viscosity
  9. Improper handling of pumped fluid
  10. Incorrect materials
  11. Pump selection made on lowest initial price rather than lifetime cost
  12. Undersized pipework
  13. Temperature of liquid too high for pump

Frequently Asked Questions

1. What type of pumps do you supply?

A. We supply a wide range of centrifugal and positive displacement pumps which enables us to provide more than one solution for your process and accommodate almost any fluid.

Our range includes standard centrifugal and multistage pumps, to immersed or process overhung solid handling pumps.

As to which pump is best suited for your application, will depend on the application itself. Speak to us to find out more.

2. How long does the specification process take?

A. Once we have received your enquiry, a member of our Technical Team will be in contact with you to confirm receipt. Depending on the complexity of the application and components required we aim to have a formal proposal to you within between 1 working day and 1 week upon receiving your complete specification.

3. How do I calculate what flow rate I require?

This can simply be calculated by determining the size of tank we are delivering from, and how quick you would like to empty it.

For example if you have a Bulk IBC Container which contains 1000L and you want to empty it in 10 minutes, you would divide the volume of the tank (1000L) by the time you want to empty it in (10 Minutes) which would give you a flow rate of 100L/minute.

Ideally any flow rate specified should be no more than a fifth of its volume e.g. in the case of a 1000L container no more than 200L/minute.

If you are unsure of the flow rate required for a particular process to be effective, having a variable speed pump can help you make adjustments to your process and obtain the performance you require.

4. How do I know what pressure I need from a pump?

This can depend on a number of factors such as the liquid viscosity, its specific gravity, length of the pipework, its diameter, changes in height of the pipework, presence of accessories such as valves, heat exchangers and materials used.

In dosing applications we would need to know the pressure of the line a pump is injecting into, and in spraying, jetting or misting applications the nozzle pressure requirements will enable us to ensure the pump delivers the correct pressure to obtain the spray pattern required.

A simple sketch on paper in paint or full technical P&ID drawing can help us calculate the pressure losses within your system to ensure you obtain the flow rate required.

5. If a pump needs to be manufactured, how long will this take to be delivered?

A. Lead times can vary and can take up to several weeks depending on the pump size, and complexity of the specification required.

6. How can I maintain my pump to avoid sudden pump failure?

A pumps maintenance schedule is determined by many factors. To avoid sudden pump failure, periodic checks and maintenance should be scheduled according to the number of hours a pump is operated, its importance in an application, the type of seal or bearings used, and the flows or pressures involved.

As a rough guide see our pump maintenance schedule here

7. What warranty is offered on pumps you supply and manufacture.

A. Our warranty ranges from 12 months to 3 years dependent on the pump model and the application.

8. Are you able to supply pump kits?

A. Yes, we have a range of pump kits available to order. Please get in touch with us to discuss your specifications.

Download our specification form and email it to us, or discuss your requirements with a process specialist if you are unsure about any of the questions.

Your Results Delivered. Backed By Technical Expertise

We provide a complete pump specification, design and replacement service covering a range of processes and almost any fluid.

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