procurement of foot valve, sluice valve, non return valve , cast iron heavy duty flange type foot valve confirming to is : 4038 . size 100mm ( 4 ) , isi marked , cast iron heavy duty flange type foot valve confirming to is : 4038 . size 150mm ( 6 ) , isi marked , cast iron heavy duty double flange type sluice valve 4 100mm ) pn . 1 . 6 confirming to is : 14846 , isi marked , cast iron heavy duty double flange type sluice valve6 150mm ) pn . 1 . 6 confirming to is : 14846 , isi marked , cast iron heavy duty double flange type sluice valve 3 ( 75mm ) pn . 1 . 6 confirming to is : 14846 , isi marked , cast iron heavy duty double flange type sluice valve 2 ( 50mm ) pn . 1 . 6 confirming to is : 14846 , isi marked , cast iron heavy duty double flange type non return valve 4 ( 100mm ) pn . 1 . 6 with by pass arrangement swing type confirming to is : 5312 , isi marked , cast iron heavy duty double flange type non return valve 6 ( 150mm ) pn . 1 . 6 with by pass arrangement swing type confirming to is : 5312 , isi marked , cast iron heavy duty flange type foot valve 8 ( 200mm ) pn . 2 with by pass arrangement swing type confirming to is : 4038 , isi marked , cast iron heavy duty double flange type non return valve 8 ( 200mm ) pn . 1 . 6 with by pass arrangement swing type confirming to is : 5312 , isi marked , cast iron heavy duty double flange type sluice valve 8 ( 200mm ) pn . 1 . 6 with by pass arrangement swing type confirming to is : 14846 , isi marked , cast iron heavy duty flange type foot valve 10 ( 250mm ) pn . 1 . 6 confirming to is : 4038 . isi marked