Tenders for Gem Bids For 56 0 To 500 Mmwc Range Differential Pressure Transmitter As Per Attached Specification Digital Differential Pressure Controller As Per Attached Specification Magnehelic Gauge As Per Attached Specification Photohelic Gauge As Per Attached Specification 1 By 8 Inch Nptm X 1 By 4 Inch Od Ss 304 Straight Connector With Nut And Ferrule 1 By 8 Inch Nptm X 1 By 4 Inch Od Ss Elbow Connector With Nut And Ferrule 1 By 4 Inch Nptm X 1 By 4 Inch Od Ss Straight Connector With Nut And Ferrule