"Diversion", "Self-absorption", "Suction" These are the main parameters of miniature pumps, explained in detail below: ã€Water diversion】 In the water pump industry, "diversion" refers specifically to "guide water." Because some pumps in the work, you must manually add water to make the pump within the formation of a closed environment, pump parts and then move to create a partial vacuum in order to allow external water pressure inside and outside the pressure at atmospheric pressure into the pump inlet to complete the water absorption action . For example, in the past, water pumps commonly used in rural areas had to be supplemented with water before the water in the wells could be sucked up. [Self-absorption] is mainly used in pumps, pumps, is a more important parameter. 1. The meaning of self-absorption As the name implies, self-absorption refers to "have the ability to automatically absorb water," that is, before the pump work, even if the inlet pipe is all air, do not pre-add "diversion", the pump will automatically Lower than the pumping side of the water pumping up and then discharged. 2. The principle of self-priming Pump in the water pipe is the case of air, the use of negative pressure pump (vacuum), under the action of atmospheric pressure will be lower than the water pressure on the pump up, and then discharged from the drain side of the pump . This process is not before the need to add "diversion (guide water)". Pumps with this capability are called "self-priming pumps." Some centrifugal or rotary vane pump in the water before, you must add "diversion" in the pump chamber to form a closed environment, and then pump operation to form a negative pressure, to achieve the purpose of water. For example, manual pumps were used in rural areas. Pumps that do not have self-priming capabilities require extra "priming" before each use, which can be cumbersome. [Suction] the height of self-priming is called "suction stroke", the unit is generally "meter." Also known as "maximum self-absorption height." That is, the maximum height at which the pump can automatically suck water (the vertical distance between the pump suction opening and the liquid to be sucked in) without adding water. Our pumps are self-priming pumps, the standard suction refers to this situation. Some centrifugal pumps do not have the ability to self-priming, the first use must add water Caixing. Although some diaphragm pumps also have the ability to self-absorption, but the subject of "Suction" often with the "inlet all the air" can draw water vertical height difference, this point please note. Suction level, with the pump power, flow, structure, etc. are related, but limited by the volume, power, the general self-priming suction miniature pump is not easy to do higher, because at most one of the atmospheric pressure on the water pressure The height of 10.3 meters (because of the atmospheric pressure ≈ 10.3 meters water pressure), so the maximum self-suction is about 10.3 meters. For example, there is a miniature pump BSP27250S self-priming suction up to 5 meters, even higher.