2 of 20Table of ContentsWarranty ............................................................................................................ 3About this Manual .............................................................................................. 3Introduction ........................................................................................................ 4Flat Glass Gages (Armored Gages)................................................................... 4Inspection and Delivery ...................................................................................... 5Installation .......................................................................................................... 6Bringing Gage Into Service ................................................................................ 7Hot Torque of Glass Gage ................................................................................. 8Operation ........................................................................................................... 9Cleaning Glass in Steam Service ..................................................................... 10Maintenance .................................................................................................... 11Repairing a Flat Glass Gage ............................................................................ 13Special Applications ......................................................................................... 17Recommended Spare Parts ............................................................................. 18Replacement Glass / Gasket Kits .................................................................... 19Additional Information ...................................................................................... 20