1/21.87 supply & erection of wall mounting type, solenoid driven, motorized, electromagnetic diaphragm dozing metering pump working on three-phase 220/240 v 50 hz electric supply with standard electronic controls, suitable for minimum dozing capacity o to 27 lph at 10 bar back pressure complete with necessary accessories, complete in all respects along with supply and erection of 1 no. voltage stabilizer with dozing pump along with 1 no. 300 litres capacity isi marked hope storage tank of approved make as per directions of engineer-in-charge.