What are the reasons for valve pump casting defects in the production 1. Stomata This is a small cavity formed inside the metal by the gas that failed to escape during the solidification of the metal. Its inner wall is smooth, contains gas, and has a high reflectivity for ultrasonic waves, but...

Should the outlet valve be closed when the centrifugal pump is started? Why should the outlet valve be closed when the centrifugal pump is started? When the centrifugal pump is started, there is no water in the pump outlet pipeline, so there is no pipeline resistance and lifting height...

Slurry Pump Wear and Maintenance The factors of slurry pump wear are as follows: 1) Media properties. 2) Material properties. 3) The interaction of abrasive and material. The main ways to improve the life of pump overcurrent components are reasonable selection of materials, reasonable selection,...

Ten wrong ways to damage the water pump Overload Whether it is flow, pressure or speed, long-term work that deviates from the rated design point may lead to increased pump load. For example, the full-open power of the centrifugal pump will shorten its life, or even "sudden death"....

1 Teflon The trade name of PTFE is "Teflon" (Teflon, Flu on), simply PTFE or F4, commonly known as the king of plastics. It is one of the most corrosion-resistant materials in the world today. The ideal sealing material for the joints of equipment such as these. Tetrafluoroethylene...

Few knowledge about the operation and maintenance of mechanical seals of anti-corrosion submerged pumps 1. Precautions and preparations before starting the submerged pump Before starting, check whether the auxiliary device and cooling system of the mechanical seal are installed correctly; The...

What is the cause of the heat of the slurry pump bearing and how to deal with it 1. Symptoms: Heat on both ends of the bearing, noise and vibration. Causes of failure: 1) Water ingress to the bearing: One of the reasons for the ingress of water to the bearing is that the environment where the...

Centrifugal pumps are widely used for medium- and short-distance solid hydraulic transportation through pipelines that require medium head and pump outlet. The performance characteristics and erosion wear of pump components are the most critical design and selection parameters. The improved...

The principle of setting the diameter of the outlet and inlet of the centrifugal pump: Generally, the outlet diameter is selected according to the economic flow rate, and the outlet diameter is determined according to the flow rate. When the pipe diameter is less than 250, it is 1 to 1.2m/s, and...