Before the installation of fire hydrant system, according to the requirements of quality control in the construction process, it is necessary to conduct on-site inspection (inspection) on system components, pipe fittings and other equipment and materials, and unqualified components, pipe fittings, equipment and materials shall not be used.
1, product identification. Visually, according to the product inspection report, the qualified outdoor fire hydrant should be cast with model, specification and trademark on the valve body or valve cover, which should be consistent with the description in the inspection report. If any inconsistency is found, the conformity test fails.
2. Fire interface. Gently scrape off the external thread and suction pipe joint with a knife. From the appearance, the main material connecting the external thread and the suction pipe should be made of copper or stainless steel. The main materials of external thread fixed joint and suction pipe joint of unqualified fire hydrant are iron or copper plating.
3. Residual water discharge device. From the appearance, outdoor fire hydrants should have automatic residual water discharge device.
4. materials. Open the outdoor fire hydrant and make a visual inspection. The bolt seat shall be made of cast copper alloy, and the material performance of the stem nut shall not be lower than that of brass.
5. Appearance quality and signs. Fire hydrant box box shall have a durable nameplate, including the following contents: product name, product model, approval number, registered trademark or factory name, production date and implementation standard.
6. During on-site inspection, you can scrape the inside and outside surface of the box with a knife to see if it has been treated with anti-corrosion. In addition, visually inspect the front of the door of the fire hydrant box. The word "fire hydrant" should be marked in an intuitive, eye-catching and uniform font with a height of not less than 100mm and a width of not less than 80 mm.
7. Equipment configuration and performance. According to the product inspection report of indoor fire hydrant box, the configuration of fire-fighting equipment in the box should be consistent with the report, and the fire-fighting equipment (water gun, hose, etc.). Fire hydrant box configured in) shall meet the requirements of on-site inspection of various products.
8. Box door. Fire hydrant box should be equipped with door locks or door locking devices. Fire hydrant box equipped with a door lock should be equipped with a manual mechanism for emergency door opening in addition to the installation glass and transparent materials that can be smashed, so as to ensure that the door can be opened flexibly and reliably without a key. The opening angle of the door should not be less than 160, and there is no jamming phenomenon.
Function of fire hydrant
1. Control combustible materials, isolate combustion-supporting materials and eliminate fire sources. Fire hydrants are mainly used for fire engines to take water from municipal water supply network or outdoor fire water supply network to extinguish fire, and can also be directly connected with hoses and water guns to extinguish fire.
2. Fire hydrant, officially named as fire hydrant, is a fixed fire control facility. Fire fighting systems include outdoor fire hydrant system, indoor fire hydrant system and fire extinguisher system, and some will also have automatic sprinkler system, water cannon system, gas fire extinguishing system, fire detection system and water mist system.