Rising Stem, Solid Wedge Disc, Screw-in Bonnet
Fig 2127
Bronze bonnet gate valves are designed for steam, water, gas, oil and other general services. Valves are similar except for screw or solder pipe ends. Rising stems are specified where stem position is used for visually determining whether the valve is open or closed. Non-rising stems are used where headroom is limited. Valves are designed for maximum interchangeability of parts to reduce spare parts inventories.
Bodies
Full flow design. Connecting pipe ends will not distort valve seats. Same body is used for both rising and non-rising stem valves insuring interchangeability of trims. Disc guide channels are beveled at top of body for easy assembly.
Bonnets
Heavy screw-in bonnet collar with ample thread engagement insures a tight body-collar joint. Wide flats provide a firm wrench hold for disassembling valve.
Stems
Resistent to wear, corrosion and embrittlement. Long, accurately machined threads provide full thread contact. Heavy disc-stem connection withstands wearing action when opening valve and prevents stem failure under strain. Rising stems have a backseat surface above the stem threads where it is less exposed to scale and damage from line debris.
Discs for rising stems
Accurately machined with disc-wing guides that conduct the disc to a firm, tight seat. Ideal for food processing lines and handling gummy substances where entrapment of line materials within the disc is undesirable.
Seats
Integral. Accurately tapered to insure perfect seating of the discs.
Repacking
Valves are repackable under pressure when wide open. Deep stuffing box and packing nut insure firm thread engagement when fully 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.
Screw End: Fig 2127 (Class 125) => Spec Sheet
Class 150 alternative is Fig 2151 (Class 150) => Spec Sheet
Solder End: Fig 2132
