Installation method of fire hydrant outside the mo

Installation method of outdoor fire hydrant

see national standard 01s force measuring mechanism Part 201 for fire hydrant installation. The fire hydrant is installed 1.0m above the edge of the sidewalk. The steel double plate 2. Precautions for the operation of the mortar tensile testing machine. The height of the short pipe is adjusted to prevent internal and external corrosion

when installing outdoor aboveground fire hydrants, the height of the fire hydrant top from the ground is 0.64M, the riser should be vertical and stable, the distance between the control valve well and the fire hydrant should not exceed 2.5m, and the buttress or support should be set at the bottom of the fire hydrant elbow

outdoor underground fire hydrant should be installed in the fire hydrant well, which is generally built with MU7.5 red brick and M7.5 cement mortar. The inner diameter of the fire hydrant shaft shall not be less than 1 meter. Ladders shall be set in the well to facilitate the maintenance of valves

the tee or the lower part of the elbow connecting the fire hydrant and the main pipe should be equipped with a base. When the base is installed, concrete buttresses should be set. Common drug packaging products such as polypropylene and polyethylene infusion bottles, non PVC multi-layer coextrusion infusion bags, oral solid pharmaceutical polypropylene bottles, oral solid pharmaceutical high-density polyethylene bottles, etc. are made of plastic materials. The buttresses and tees, and the bottom of the elbow should be plastered with M7.5 cement mortar into an eight shaped bracket

the distance from the bottom of the main water supply pipe in the fire hydrant well to the bottom of the well shall not be less than 0.2m, and the minimum distance from the top of the fire hydrant to the bottom of the well cover shall not be less than 0.2m. In areas where the outdoor temperature is lower than -20 ℃ in winter, in order to ensure the parallelism of the cylinder axis and the guide rail, the fire hydrant wellhead shall be insulated

when installing outdoor aboveground fire hydrants, pebbles with a particle size of mm shall be used as the seepage layer at the water outlet, with a laying radius of 500 mm and a laying thickness of 100 mm from the ground to the bottom of the trough. When laying the seepage layer, the drainage elbow should be protected to avoid damage

when installing outdoor aboveground fire hydrant B, the automatic drain elbow of the fire hydrant should be blocked, and another drain tap should be set in the fire hydrant well

before the installation of outdoor fire hydrants, the inner and outer walls of pipe fittings shall be coated with asphalt cold primer twice, the outer wall shall be additionally heated with asphalt cold primer twice, the flange interface buried in the soil shall be coated with asphalt cold primer twice, the outer wall shall be additionally heated with asphalt twice, the finish coat once, the flange interface buried in the soil shall be coated with asphalt cold primer twice, the outer wall shall be additionally heated with asphalt twice, and the finish coat once, The flange interface buried in the soil shall be coated with asphalt cold primer oil and hot asphalt twice, and wrapped tightly with asphalt Hessian. The iron parts in the fire hydrant shaft shall also be coated with hot asphalt for corrosion prevention