supply of butterfly valve , supply of items as per following specifications , supply of butterfly valve wafer type , size : 12 #150 . as per category b table 2-a , face to face dimension - 81 mm , body : sa216 wcb , disc: a351 gr . cf8 , seat: epdm , shaft:ss410 , manual gear operation and position indicator , suitable for mounting between flanges confirming to asme b16 . 5 flanges , design as per api 609 and testing as per api 598 . , supply of butterfly valve wafer type , size : 10 #150 . as per category b table 2-a , face to face dimension - 71 mm , body : sa216 wcb , disc: a351 gr . cf8 , seat: epdm , shaft:ss410 , manual gear operation and position indicator , suitable for mounting between flanges confirming to asme b16 . 5 flanges , design as per api 609 and testing as per api 598 . , supply of butterfly valve long pattern double flanged end type , size : 10 #150 . as per category b table 2-b , face to face dimension - 330 mm , body : sa216 wcb , disc: a351 gr . cf8 , seat: epdm , shaft:ss410 , flanges as per asme b 16 . 5 , manual gear operation and position indicator , design as per api 609 and testing as per api 598 . , butter fly valve double flanged end type , size : 12 #150 . short pattern as per category b table 2c . face to face dimension : 178 mm . body : a216 wcb , disc : a351 gr . cf8 , seat : epdm , shaft : ss 410 : flanges as per b16 . 5 with manual gear operation and position indicator . design as per api 609 and testing as per api 598 .