supply of valves for sulphuric acid unloading and dosing system , dn-25 cast carbon steel ( astm a216 gr.wcb ) double flanged ball valve; 3 piece design, full bore construction, ball and stem of ss304, seats and seal of ptfe, operating lever of mild steel with pvc sleeve, class-150, max pr-19 bar at 20°c, max. temp. 200°c at 11 bar , dn-40 ball valve: product standard bs-5351; pressure / class rating-150 body material cum std -ccs ( astm a216 gr. wcb ) ; product description -2 piece design, type of seat- renewable seat; trim-ball and stem ss ( aisi 304 ) ( blow out proof stem ) ; seat ring and gland packing of ptfe; end details: flanges as per asme b16.5 class 150 test pressure-btp-30 bar hyd; stp- 22 bar hyd, stp-6.9 bar air , dn-50 cast carbon steel ( astm a216 gr wcb ) double flanged ball valve: 3 piece design, full bore construction, ball and stem of ss304, seats and seal of ptfe; operating lever of mild steel with pvc sleeve, class-150, max pr-19 bar at 20°c, max. temp. 200°c at 11 bar , dn-80 cast carbon steel ( astm a216 gr. wcb ) double flanged ball valve, 3 piece design: full bore construction, ball and stem of ss304, seats and seal of ptfe, operating lever of mild steel with pvc sleeve. class-150. max pr-19 bar at 20°c, max. temp 200°c at 11 bar , dn-50- ( nrv ) swing check valve; product standard bs-1868, pressure / class rating-150: body material cum std. -ccs ( astm a216 gr. wcb ) product description-bolted cover. type of seat- renewable seat, trim ss ( astm a276 type 410 ) , end details- flanges as per asme b16.5 class-150rf test pressure-btp- 30 bar hyd; stp-22 bar hyd