Procurement Of Air Filter Regulator For All Areas Of Instrumentation Department At Gail Pata, 1320 Afrs With Range 0 To 7.0 Kg Per Cm2 End Conn 1 In Nptf Afrs With Range 0 To 7.0 Kg Per Cm2 End Conn 0.5 In Nptf Afrs With Range 0 To 2.5 Kg Per Cm2 End Conn 0.25 In Nptf Afrs With Range 0 To 4.2 Kg Per Cm2 End Conn 0.25 In Nptf Afrs With Range 0 To 7.0 Kg Per Cm2 End Conn 0.25 In Nptf