‘Friction losses’ is the name given to the friction caused by pumping fluid through a system. This includes the friction between the fluid being pumped and the walls of the pipe; or the pressure caused when the fluid goes through a restriction such as a valve. Just considering the friction against the walls of the pipe, the amount of pressure created is dependant on four main variables: The relative viscosity of the fluid being pumped The volume of fluid being pumped The mat

Yesterday was officially the first day of Spring. To mark the event we thought we’d let you know a couple of tips about one of the important parts of most pumps’ mechanical seal - the spring. A mechanical seal’s spring is meant to hold the seal faces together. If it is set at the wrong length when it is fitted then it won’t exert the correct amount of pressure required. This can cause the seal to leak during idle periods, even though the seal faces won’t be worn. Often ve

Some systems have a particularly high head requirement compared to the flow, or a particularly high flow requirement compared to the head. In these situations it can be more difficult to find a suitable pump that will operate efficiently and fulfil the system requirements. One solution is to use two, smaller pumps. This doesn’t double the flow and the head, however… There are two ways to connect two pumps together, in ‘series’ or in ‘parallel’. ‘Series’ is when the discha