Vertical stamping multi-stage pump Vertical multi-stage pump using multiple water diversion section, the impeller from the combination of a lift, the pressure of the typical advantages. Very suitable for high-rise water pressure booster, long-distance water supply and the need for pressure greater laboratory equipment pressurized use occasions. Of course, the need for vertical multi-stage pump far more than the occasions mentioned above a few occasions, in order to meet a variety of occasions, businesses have also introduced a wide range of vertical multistage pumps, despite the diversification of models, but the appearance of the pump is roughly the same style (Inlet and outlet located in the same line and under the water on the form of water) and the same principle of work. The vast majority are the working principle of centrifugal pumps. The following description is also all centrifugal multi-stage pump to meet the district, large buildings (such as schools, military units, large factories, etc.), villas and other occasions, living water supply; buildings, office buildings and other commercial buildings air conditioning and refrigeration system pressurization and Fire booster; Waterworks remote pressurization; Various construction sites pumping water without impurities. Selection Analysis All of the following product models are based on the Guangzhou City-hung pump Co., Ltd. for example. I use a few common purposes from the common examples of the form of analysis for the selection of friends in need of reference: Living water: In theory, domestic water supply pressurized can choose the following types (CRF, GDL, DL, VP) Any one, but from the health and work efficiency, not free to choose. CRF belongs to the latest series of products, whether it is appearance or work efficiency, CRF is doing the best in all aspects. If you need efficient and clean booster pump, CRF of course is your first choice! For the general scale of domestic water supply, DL series pump can not be considered. DL is a low-speed, high-lift (30-250m) high-flow (12-500m³ / h) pump that, despite being made of HT200 cast iron, tends to be more expensive than a CRF all-stainless steel multistage pump. VP series belong to high-lift centrifugal pump with small flow (4-30m³ / h). Except that the impeller is made of H62 brass, all the others are made of cast iron. Therefore, under the same parameters, VP series pumps have the lowest price, If no special requirements, the use of VP vertical multistage pump to do life pump is also very good. GDL belongs to the relatively obsolete manufacturing process and belongs to medium-flow (2-72m³ / h) high-lift (24-160m) pipeline centrifugal pump. Although HT200 cast iron is used in the water inlet section, GDL is priced at the same parameter And all stainless steel CRF quite, without special requirements, domestic water supply may not consider GDL products. However, it is not unreasonable to continue the existence of the GDL, and he is the preferred target in fire fighting. The above mentioned product model specific performance parameters to see the following product line related introduction. Fire Pressurization: In the area of ​​fire protection, CRF is no longer the preferred object and GDL, DL and VP are considered. If used in large buildings, fire pressurization, bear the brunt of choice DL model pump, because of its flow or pressure are relatively large. As already mentioned, the price of DL pumps is relatively high. If the flow rate does not need to be too large, you can choose the low-cost (relative to the DL) VP and GDL models. All three models have a fire certificate. According to the actual needs of choice, the specific performance parameters to see the following product line introduction. Air Conditioning, Refrigeration and Cooling Towers: Because of the variety of cooling facilities and air-conditioning facilities, the flow and pressure of pumps are also diverse. From a technical point of view, there are four types of CRF, DL, GDL and VP Of the multi-stage pump can be used, the user can calculate the required flow and lift of the pump according to the size of the air conditioning cooling facilities to select the specific model, the specific performance parameters, see the following product line introduction. Temporary water supply for site construction: Most pressurized water used in construction sites is used to transport clean water or sewage required for the construction. Clean water is supplied by municipal tap water or ditches. If it is a building construction site, multistage pumps are generally selected as Pressure equipment, VP As an inexpensive multi-stage booster pump, temporary water supply is a matter of course taking cost into account when performance is guaranteed. However, since VP is the form of water above the influent water, it may not be easy to install on some occasions. In this case, GDL or CRF pump can be used as a replacement pump, but the cost is slightly higher. DL in this occasion completely useless price, bulky do not say, the price is still quite high. A car outdoor construction sites such as railway construction these occasions, may not need too much pressure to meet the needs, this time can choose according to the actual situation GD vertical single-stage centrifugal pump to meet the pressure; Site sewage can not be closed structure Impeller multi-stage pump as a booster device, the general WQG submersible sewage pump, not described in detail here, there is a need to understand Click WQG submersible sewage pump link to the details page. Agriculture, orchards, horticultural irrigation: agriculture, orchards and other irrigation need to shop a lot of pipe or long distance water delivery, the choice of multi-stage pump is necessary, if the main pipe diameter between 40-80mm, I recommend VP vertical multi-stage pump , Recommended reason Do not have to do too much to explain, a word: enough and inexpensive! Water treatment equipment: water treatment is raw water treatment. In the process of water treatment, the raw water needs to be pressurized and transported to enter the equipment for treatment. The purpose of the treatment is to further purify the water. Therefore, the principle of selecting the booster pump is to be clean, hygienic and efficient. Only the CRF series products are recommended here, Other DL, GDL, VP can not be replaced.