supply of procurement of set of 04 nos item. (1) sight glass- sight glass sgn 10s suitable etc.procurement of set of 04 nos item. (1) sight glass- sight glass sgn 10s suitable etc.,set of 04 nos item. (1) sight glass- sight glass sgn 10s suitable for r407c refrigerant fitted i n cab ac of 3 phase emu/memu. qty-01 nos. (2) ball valve- shut off ball valve (service valve) suitable for r407c refrigerant fitted in cab ac of 3 phase emu/memu. qty-01 nos. (3) charging valve- nrv charging val ve suitable for r407c refrigerant fitted in cab ac of 3 phase emu/memu. qty-01 nos. (4) expansion valve- t hermal expansion valve tube suitable for r407c refrigerant fitted in cab ac of 3 phase emu/memu. qty-01 nos. all item conforming to rdso specification no. rdso/2007/el/spec/0055(rev.-2) and accepted make a nd model as per bill of material of mentioned specification are danfoss/sporlan/emerson only. [ warranty period: 30 months after the date of delivery ] ]