supply and delivery of different types of valves , supply and delivery c.i wedge with spindle for 150 mm dia alfa alfa valve ( as per sample ) , supply and delivery 150 mm dia ci alfa-alfa valve ( c type ) with hand wheel 01 no. for 04 nos valve to be manufactured from cast iron as per is:-210 / 1239 with latest amendsments. , supply and delivery 150 mm. dia isi marked sluice valves pressure designation p.n. 1.6 with hand wheel for water works purpose, c.i. flanged type. is:14846 / 2000 with amendment no.1, 2 & 3. components / parts of sluice valves shall be manufactured from basic materials given in table 1 of is:14846 / 2000 with amendment 1, 2 & 3.