You're probably asking yourself, "What's the difference?" when you consider installing a suction or discharge pipe on a project. You're in the right place! This section will explain the purpose and role of the joint and show you how it works in practice. You will also learn how to attach a suction tube. Suction and discharge pipe joint The connection between two sides of a pump is called the suction and discharge pipe joint. The hydraulic demand of a fire protection system determines the size of the suction pipes. The appropriate system installation standards, such as NFPA 13, NFPA 14, and NFPA 24, provide guidance on the minimum suction pipe size. As long as hydraulic calculations prove that the pipes can provide the required flow, however, smaller pipes may be permitted. The suction pipe must be at least three times as large as the discharge pipe. The discharge pipe should be at least one inch shorter than the suction tube. This should reduce NPSHa by 90'. Other lessons include minimum static suction head and frictional pressure drop. You can use the Example 1 conditions to calculate the hfd for the discharge side. The suction and discharge pipes should have the same diameter. The discharge pipe should be wider than the suction tube. The NPSHa requires that both pipe joints be sized according to the NPSHa. The NPSHa requires that a leak box be large enough to serve as a jet shield. It should also have the capacity to detect an increased leakage flow. There are many factors to consider when choosing the right suction or discharge pipe joint. Here are some of them. The suction pipe's role A suction and discharge pipe joint connects a pump and its discharge hose. These pipes can be installed according to specific guidelines. For example, a 1500-GPM pump will need an 8" suction tube. The rest of the pipe should be the exact same size as the pump’s discharge hose. The operation of a fire protection system is dependent on the suction pipe joint. The tank's pressure is controlled by the suction and discharge pipe joints. The suction pipe is typically removed from the tank's bottom or side. Suction tanks should be designed with adequate submergence to prevent vortexing. A minimum of one foot per foot of flow is recommended at the suction pipe inlet. Bellmouth inlets are recommended to prevent vortexing. Additionally, baffles should be placed between the outlet and inlet connections to prevent short circuiting. A suction pipe must be carefully sized to avoid air pockets at 150% of the pump's capacity. Pipe flow at speeds above this speed is more susceptible to turbulence. To avoid air pockets, it is recommended to install an eccentric tapered type of pipe or increaser to decrease the flow velocity. Before installing a suction tube, it is important that you know the size requirements.
What's the Difference Between a Suction and Discharge Pipe Joint?
