Horizontal or vertical inline pump design – which one to choose ?

1. Types Of Inline

   Centrifugal Pumps Horizontal Pump Design Vertical Pump Design

2. The Difference Horizontal Type ●

   Shaft is normally in a horizontal position. It is sometimes overhung or placed between bearing design. Vertical Type ● Shaft is in vertical position; it is always an overhang and of radial- split case type design.

3. Horizontal Centrifugal Pumps

   - Pros & Cons Pros: ● Easier to install and maintain. ● Can be directly coupled to electric motor, engine or turbine. ● Can opt for overhung or between-bearing depending on low or high suction pressure. ● Can get various nozzle configurations that match your external site piping like: ○ end suction top discharge ○ top suction top discharge ○ side suction side discharge. ● Suitable for almost all indoor applications.

4. Cons: ● Applications become

   limited where NPSH(R) > NPSH(A) ● Requires an auxiliary booster pump. ● Maximum allowable operating temperature and working pressure is much lower than that in a vertical inline pump. ● Bigger footprint is required for horizontal designs. Horizontal Centrifugal Pumps - Pros & Cons

5. Vertical Centrifugal Pump

   - Pros & Cons Pros: ● Smaller footprint than horizontal pumps. ● Suitable for spaces where the ground surface area is restricted. ● With vertical design,, the NPSH available can be increased. ● Suitable for higher temperature and high pressure fluids.

6. Cons: ● Require large

   headroom for installation & maintenance especially for multistage units or turbine pumps. ● Such pumps can be used only when direct coupling with an electric motor is available. It is not a perfect choice with engine or turbine. ● Due to the overhang design, it becomes difficult to balance the hydraulic axial thrust especially while dealing with high suction pressures. ● Multistage vertical inline pump would requires expensive barrel and pit. ● It will be prone to various issues in its mechanical seals when it has to pump liquids with high dissolved gases. Vertical Centrifugal Pump - Pros & Cons

7. 1320 Britannia Road

   East, Mississauga, Ontario, Canada. L4W 1C8 Tel: (905) 461- 9617 Fax: (905) 461- 9618 Toll Free: 1-866-217- 7867 http://www.rotechpumps.com Follow Us On:

If you have any questions on horizontal inline pump. We will give the professional answers to your questions.