Linxia Hui Autonomous Prefecture of Hunan secondary frequency of water supply equipment [Walter] Water Equipment Co., Ltd. China Merchants secondary water supply equipment supply industry refers to operators through field surveys, testing, research and development of a solution to the problem of residential water equipment. It is realized on the basis of the national municipal secondary water supply pipe network or supply equipment for personal use on residents to meet the water needs of the majority of users. Overview of secondary pressurized water supply equipment secondary pressurized water supply equipment is developed on the basis of the traditional constant pressure water supply system based on a new water supply, it is not a simple combination of pumps, pipe valves, tanks and control cabinet, and is a mechanical, electronic, information, automation technology for high-tech products. With further development of the concept of negative pressure water, a growing number of research institutes and manufacturing enterprises to non-vacuum technology for in-depth research, and made more fruitful results. In the domestic non-vacuum techniques to analyze the market in accordance with existing non-negative pressure water supply equipment works, the second pressurized water supply equipment system consists of Variable Speed ??Pump unit, steady flow compensator, vacuum suppressors, pressure and flow sensors preload self-balancer, control cabinet, filter, backflow prevention devices and other equipment. According to the realization of different functional principles no negative can be roughly divided into the following forms: (a) steady flow compensator and vacuum suppressor control mode when the municipal water supply pipe network or user inadequate water supply capacity is greater than when the municipal pipe network , vacuum suppressor open, air enters the steady flow compensator, so that the original closed compensator becomes break tank, inhibiting the negative pressure generating another set level control in the steady flow compensation, when less than the low, the pump stop working. (B) controlled limiting mode when the municipal water supply pipe network or user inadequate water supply capacity is greater than the municipal pipe network, the pressure sensor feedback signal, take restrictive inverter, so that the pump does not over-water, and when the municipal pipe network When the water supply to meet the requirements, the system returns to normal. (C) the pressure control point mode when the municipal water supply pipe network or user inadequate water supply capacity is greater than when the municipal pipe network, straight from the variable flow constant pressure pump, until the water supply to meet the requirements, the system returns to normal. Although the secondary pressurized water supply equipment business has developed rapidly in recent years, but it still has the following disadvantages in the relevant standards and technical aspects and other aspects: First, its application has certain limitations. Because it lacks a secondary storage device, the municipal water supply once a fault, the entire device to stop functioning without water while in the state, so for those specific users without interruption of water supply, it does not apply. Secondly, since the secondary pressurized water supply equipment is a new type of equipment, the technical aspects need to be further mature, also need to be changes in the conditions of the municipal water supply conditions and continuous improvement. Again, it is more critical, no national uniform standards throughout the industry to follow, practical, companies are by their own corporate standards for production, so there will be some problems in the actual application process. According to incomplete statistics, now second pressurized water supply equipment manufacturers from three, four years ago, more than a dozen soared to nearly a thousand. These enterprises size ranging from technology and service vary widely, the biggest asset billion, with advanced digital production line, small handmade cottage only a dozen people, aside technical factors aside, the gap between the quality of it probably different. Only how to make the product does not produce a negative pressure, the method used by the various companies on different, resulting in products of varying quality. In addition, this device is to apply under certain conditions, the pressure of the pipe network, water supply, etc. have certain requirements, but there are some companies ignore these requirements, at a location designated water, pumping excessive, resulting in inadequate water supply pipe network stop water phenomenon. So if you do not allow unrestricted access to secondary pressurized water supply pipe network equipment, has the potential to exceed the capacity of the pipe network, there may be the opportunity to make inferior products flooding the market, giving users of water and the pipe network security risks. Water is the source of life, it gave birth to the human civilization, and to enlighten the human intellect, affect the process of human society. Hunan Walter Water Equipment Co., Ltd. always adhere to the "people-oriented, customer first" philosophy has always been to pursue the "integrity, responsibility, excellence "spirit of enterprise, to build China's most powerful and most advanced equipment and technology the most professional, best service supply equipment business.