Underground steel fire hydrants comply with the requirements of GOST 53961-2010. The hydrant is intended for drawing water from the water supply network for the purpose of fire extinguishing using a fire column GOST 7499-71. In addition, the hydrant can be used to admit or release air when emptying and filling the water supply network. The main parameters and dimensions must correspond to those indicated below: Operating pressure MPa (gf/cm²) 1 (10) Inner diameter of the body 125 mm Valve stroke 30 mm Valve play in the axial support with the hydrant open no more than 0.4 mm Height of the hydrant fire hydrant 500-3000 mm Hydraulic resistance in the hydrant at H = 1000 mm, no more than s² M-5 1.2*10³ GOST 53961-2010, subject to the rules of operation, transportation and storage Useful facts about fire hydrants: The fire hydrant is installed in a well and is mounted on a fire stand, which is a shaped part of the water supply network using an adapter flange. The hydrant body is made of steel pipe. The fire hydrant valve is made of high-strength cast iron. To avoid damage to the thread and foreign objects entering the hydrant, the nipple is closed with a safety cap. The height of the fire hydrant is determined depending on the depth of the pipeline. Inspection of fire hydrants: The technical condition of fire hydrants with water release is checked twice a year: in April and September-October. The first check determines the presence of a pointer, its location and removal of insulation; installs a fire pump on a hydrant; reveals the correspondence of the square on the hydrant rod to the square of the socket wrench of the column, the convenience of connecting pressure and suction hoses, and the correspondence of the location of the neck of the hydrant well to the column. At the same time, the filling hole is cleaned, the plug and blockages are removed; let water in by opening the ball valve, close the ball valve, check the operation of the water outlet, close the well neck with a lid and inspect the access point to the hydrant. During the second check, in addition to the listed measures, the following must be taken into account: the presence of groundwater in the hydrant well and its riser and pumping it out, plugging the outlet hole and registering the hydrant; Insulation of fire hydrants is carried out after they are checked for technical serviceability. It is prohibited to insulate faulty hydrants. Insulation of such hydrants is carried out after the fault has been eliminated. Installation: The working position of the hydrant is vertical. Hydrants are installed in wells using a fire stand GOST 5525-88 on flushed water pipelines before their hydraulic testing. You can buy a fire hydrant by contacting us at the specified contacts! 8-800-775-03-20 calls within Russia are free.
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