1. Introduction This product is my factory developed new patented products. After careful market research before the survey, repeated comparisons, absorbing, and finally, to design a simple structure, in the form of a novel, excellent products running smoothly. The product by product identification China Engineering Construction Standardization Association, China Construction Metal Structure Association of Water Supply and Drainage Equipment Branch: "There improvement in the structural design and other aspects of a major breakthrough ...... This product leading level of similar products." The product was rated as "national new product." This product is suitable for high-rise buildings of domestic water, fire water systems require reducing static and dynamic pressure of the occasion. The product can replace the middle tank, saving the cost of expanding the actual area of ??the building. Reduction ratio of the product was 2: 1,3: 1,3: 2,4: 1,5: 2. Users may also request other proportional rate of product supply. 2. Features ● use of hydraulic principles control adjustment, simple structure ● reduced the proportion of accurate, high-volume traffic ● both reducing the dynamic pressure, static pressure is also reduced ● run smoothly without noise, no shock, the elimination of water hammer, pipe network ● protection and Media contact parts are treated with preservatives ● ● suitable for installation at any angle light weight, small size, easy installation and maintenance