Outdoor fire hydrant pressure classification

This post was last edited by hunter1125 on 2010-8-10 19:08 Outdoor fire water supply systems are divided into high-pressure fire water supply systems, temporary high-pressure fire water supply systems and low-pressure fire water supply systems according to fire water pressure requirements. You can check out this link. http://www.kongfen.cn/Article/cn_bookviw.asp?id=342

This post was last edited by nanbo888 on 2010-8-10 19:30 1) Low-pressure fire hydrant: The fire hydrant installed on the pipe network of the outdoor low-pressure fire water supply system is called a low-pressure fire hydrant. low pressure fire hydrant * Water supply equipment for fire trucks at the fire scene. (2) High-pressure fire hydrant: Fire hydrants installed on the pipe network of outdoor high-pressure or temporary high-pressure fire water supply systems are called high-pressure fire hydrants. The high-pressure fire hydrant directly discharges the water pipe, and there is no metaphor for how to distinguish whether the pressure of 7 kilograms in our unit pipe is high pressure or low pressure.

"General Technical Conditions for Outdoor Fire Hydrants" GB 4452-1996 3 Product Classification 3.1 Types and Specifications 3.1.1 Fire hydrants can be divided into two types: above-ground type and underground type according to their installation occasions. 3.1.2 Fire hydrants can be divided into socket type and flange type according to the connection form of the water inlet. 3.1.3 Fire hydrants can be divided into two types: 100mm and 150mm according to the nominal diameter of the water inlet. 3.1.4 For fire hydrants with a nominal water inlet diameter of 100mm, the water suction pipe outlet should use a 100mm fire protection interface, and the hose outlet should use a 65mm fire protection interface. 3.1.5 For fire hydrants with a nominal diameter of 150mm in the water inlet, the outlet of the suction pipe should use a 150mm fire-fighting interface, and the hose outlet should use a fire-fighting interface of 80mm. 3.1.6 The nominal pressure of fire hydrants can be divided into two types: 1.0MPa and 1.6MPa. Among them, the socket-type fire hydrant is 1.0MPa and the flange-type fire hydrant is 1.6MPa.

Reply 3# nanbo888 You are asking about the fire water supply system, not the fire hydrant^_^ Stabilized high-pressure water supply system refers to a fire-fighting water system that uses a stable pressure pump to maintain the fire-fighting water pressure of the pipe network greater than or equal to 0.7MPa.

This post was last edited by Chang Chang Depressed at 2010-8-10 22:13. It is mainly based on the pressure of the outdoor fire water supply network where the fire hydrant is located. See building regulations: When a high-pressure or temporary high-pressure water supply system is used for outdoor fire water supply, the water supply pressure of the pipeline should be able to ensure that the total amount of water reaches the maximum and