v a l v e s : 1.isi marked ss yard [hydrant valve single headed] type a with all accessories like gaskets, nut & bolts blank caps. material of construction of hydrant valve shall be as per is:5290 .. 40 nos. 2.25 nb air release valve with drain cock on riser. the air release valves shall be of direct spring loaded pop type and shall have atight, positive and precision closing and shall be provided with a manual lifting lever. valves shall be constructed and adjusted to permit the fluid to escape without increasing the pressure beyond 10 percent above the set blow off pressure and shall reset at a pressure not less than 2.5 percent and not more than 5 percent and not more than 5 percent of the set pressure. the seat and disc of safety valve shall however be of suitable material to resist corrosion. the seat of the valves shall be fastened to the body of the valves in such a way that there is no possibility of seat lifting & technical specification. .. .. .. 2 nos. 3. isi marked sluice valve conforming to is:14846, pn-1.6 with complete flanges, gaskets & nuts and bolts. size: 50 nb .. .. 1 no. 65 nb .. .. 1 no. 80 nb .. .. 2 nos. 150 nb .. .. 10 nos. 200 nb .. .. 6 nos. 250 nb .. .. 2 nos. 4. non return valve as per is:5312 with complete flanges, gaskets, nuts and bolts. size : 50 nb .. .. 1 no. 200 nb .. .. 2 nos. 5.s.s. landing valve (single headed) type a with all accessolries-gaskets, nuts & bolts, blank caps. material of construction of hydrant valve is as per is:5290 .. .. 4 nos. 6. 15 nb solenoid valve .. .. 1 no. 7. flange mounted deluge valve 80 nb working pressure .. 7.0 kg/cm2 hydrostatic test pressure .. 10.5 kg/cm2 .. 1 no.

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