Details: sitc of ul listed and fm approved polyethelene vane type water flow switch with actuation & delay mechanism for sensitivity in the range of 4 to 10 gpm and suitable for installation in following sizes of sprinkler pipe for a static pressure rating up to 250 psi in cluding making connections, making hole in pipe for inserting the vane etc. as required. all as per pre approved by engineer in charge. for additional technical parameters of products/ work , refer annexure "a" attached with this bsr . 80 mm dia. 100 mm dia. supplying and fixing cylindrical air vessel of continuous welded construction fixed at riser top made of 250 mm dia, fabricated out of 8 mm thick ms sheet, 1200 mm in height with flanged connection, provision for 25 mm dia drain valve,air release valve,safety valve pressure gauge as required accessories and painting with two coats of red oxide and two coat of post office red enamel paint including the tank shall be installed on suitable vertical legs. the legs s
Sector: Road development