Globe Tapered Disc, Union Bonnet
Fig 407
Regrinding valves were first designed by Lunkenheimer; they are made so all parts can be renewed, and if the seating surfaces or discs become worn, they may be reground to theirs original tightness without removing them from the line.
Bodies
Ample, with full flow areas and regrindable, integral seating surfaces.
Bonnets
Union design aids in regrinding operation by centering the bonnet and working parts in correct alignment. Union bonnet valves provide strong, safe, reliable service in industrial applications.
Discs
Renewable and regrindable. In 1/2″ and smaller sizes stem and disc are one. Larger sizes have separate, swiveling disc. Small, round metal plate clamped between stem head and disc prevents swiveling during regrinding process.
Stems
Exceptionally resistant to wear, corrosion, and embrittlement.
Repacking
Valves are repackable under pressure when wide open. Stuffing boxes are deep and well packed. Back seats above stem threads make scale formation unlikely and provide a tight seal.
Hexagon head gland
Permits the use of a light wrench to easily loosen and raise gland.
Non-slip handwheel
Insures tight closing.
Fig 407
