supply of vacuum circuit breaker ( ac ) ( 25kv, 50hz, for 3 phase emu, m / s aal type vcba 25.10 tr. or m / s btipl / alsthom type bvac 25.10 m07 only confirming to clw specification no. clw / es / sk-1 / c / 47 alt h. the scope of supply will be as : item no. 1 - high pressure ( 20 kg. ) flexible reinforced rubber 27 inch long air hose pipe i.d. 5 / 16 inch with 3 / 8 inch bsp female coupling fitting at both ends. metallic nut should be confirm to is:225 gi coated sae-100 r1. qty required - 01 , item no. 2 - male connector 1 / 2 inch x 3 / 8 inch bsp ( nipple ) qty required - 03 & item no. 3 - male connector sicem-35p ( as per para 6.9 ) qty required - 01 set. for detailed scope of supply please refer annexure-a attached [ warranty period: 30 months after the date of delivery ] amm ( carshed ) sanpada , cr maharashtra 8.00 set dycmm ( cwe ) , matunga , cr maharashtra 7.00 set