Flowserve 1888 Double-Disc Gate Valve - Manual (Page 10)

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7.0 MAINTENANCE REQUIREMENTS
7.1 Preventive Maintenance
7.1.1 Check all nuts and bolts periodically to ensure tightness and to forestall possible leaks. Recommended
torque values are presented in Section 11.0.
7.1.2 Keep valve stem clean and properly lubricated.
7.1.3 Check conditions of packing and replace as necessary.
7.2 Recommended Spare Parts
7.2.1 Recommended spare parts are packing and pressure seal gaskets. The recommended quantity is one (1)
set of packing and one (1) pressure seal gasket for every two (2) valves of a particular type. However, not
less than one (1) set of the above for each type.
7.3 Lubrication
7.3.1 Apply a light coating of lubricant (Dow Corning Molykote 111 Compound, Dow Coming Molykote P37 paste
or equal) to the threaded area of the stem when necessary.
7.3.2 The bearing area in the yoke bushing can be lubricated via the grease fitting (340) with the
above-mentioned lubricants.
1888-lb. Double-Disc Gate Valve FCD ADENIM0001-00