mbt uk Indoor fire hydrant decompression regulator

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fire hydrant at the decompression, the decompression plate has been the traditional way. This approach, on the one hand to the designers create the tedious workload of engineering calculations; the other hand, in the installation and construction process, must be supported in the hydrant water supply pipe welded flange or install wood joints to fix the vacuum orifice. The early eighties, the relevant departments of the structure has been improved fire hydrant design, the hydrant into the water inlet connection with the outer thread threaded into the purpose of the thread inlet groove step back in order to This installation plate. Some manufacturers cast out of the fire hydrant on the interface plate to address the fire hydrant decompression problems. Of these approaches for many years, with little success, installation and construction workers feel inconvenience. Some buildings even loaded plate leakage, the wrong equipment and so on. Even if accurate calculation of designers and construction personnel to install correctly, but the actual use of the process with the system flow and pressure fluctuations and changes in the bolt can not remain stable after the pressure.

SNJ65-A type of Spring

SNJ65-A type of Spring

NJ65-A type of Spring

Pratt & Whitney Mechanical Technology Development Corporation Beijing Research

financial Yang Beijing Institute of Technology developed

Research Institute of Beijing Luan

Recently,[link widoczny dla zalogowanych], our hospital is responsible for the revision of the > set national standards according to the views of colleagues, brothers and institutions, after extensive research, a collection of this content. New Figure concentrated in a single box configuration SNJ65 bolt fire hydrant fire hydrant type vacuum regulator, DN65 rubber lined hoses and QZ19 /? 19 water gun. Not yet developed due to the current double-double outlet vacuum regulator valve fire hydrant and indoor fire hydrant boxes tied place, you can install two SNJ65 bolt box type vacuum regulator with the specifications of fire hydrants and hoses and water cannons.

district by district, is the practice among <LABEL class=lb onclick=Since the late eighties by the dynamic pressure can reduce both the new reducing valve and the proportion of static pressure valve come out, then gradually adopted to implement the partition decompression valve. Valve application, saving floor space and space, saving the project investment, and achieved good economic results.

Plug the mouth of the water hydrant pressure is greater than 0.50Mpa,[link widoczny dla zalogowanych], the fire hydrant should be located at the decompression device.
Keywords: interior vacuum regulator performance characteristics of the fire hydrant application

addition, because the interior is a vacuum regulator fire hydrant water pressure by the bolt forward scuppers automatically adjust the effective cross-section to work, in order to avoid blockage scuppers failure is not recommended to do in system design hot dip galvanized steel pipe may be used, and set fire pump suction pipe Y-<LABEL class=lb onclick=At the same time, the installation should be civilized construction, the elimination of <LABEL class=lb onclick=use and normal operation.
indoor fire hydrant decompression regulator works with an ordinary vacuum valves are different. Valve after the valve is generally used ordinary sampling techniques, that is, by detecting changes in pressure valve to control valve operation. The indoor fire hydrant with vacuum regulator plug before the sampling technique is to make it before the pressure bolt with automatic identification ability to change and quickly before the bolt freely under pressure to control its internal vacuum regulator device work, and keep After the plug outlet pressure stability.
is worth noting that, in the high-rise building fire system design, not by using a vacuum to cancel vertical partition fire hydrant. Designers still in accordance with the

present, the domestic manufacturers were developed on three structural forms of indoor vacuum regulator fire hydrant, and fire departments have been testing the public security, access to production and sales of patented products to allow the relevant certificates. The internal structure of the three products shown in Figure 1.
in high-rise building fire system design used in fire hydrant indoor vacuum regulator, orifice plate can be removed from the complicated set of hydraulic calculations. The designer,[link widoczny dla zalogowanych], only to static pressure in the system is greater than 0.3-0.4Mpa start setting the location of fire hydrants vacuum regulator, and in the hydrostatic pressure is smaller than this value is still set to normal indoor fire place.
fire hydrant indoor vacuum regulator is in strict accordance with the technical parameters of the It includes: Test pressure 2.4Mpa, nominal pressure 1.6Mpa, inlet pressure 0.4-0.8Mpa, the outlet pressure of 0.3Mpa, regulation accuracy ± 0.05Mpa, water flow ≥ 5L / S.

indoor fire hydrant is for ordinary vacuum regulator in high-rise building fire hydrant design and construction process reflects the deficiencies and defects, in particular fire hydrant bolt on the pressure after the user needs the stability of the new products developed. Shape and structure of the product size is identical with ordinary fire hydrant,[link widoczny dla zalogowanych], not only has the switching function, but also has automatic vacuum regulator function. It can change the bolt before the bolt after the water pressure into a stable full water column, and this process is regulated by internal pressure relief device automatic.
Indoor fire hydrant decompression regulator application in high-rise building

Abstract: According to a new national standard GB3445-95 (fire hydrant) vacuum regulator developed indoor fire hydrant with advanced technology, reliable performance, and easy installation. This article focuses on the technical parameters of the product, structural features and design considerations in the installation process.

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