Gate valves serve as efficient on-off valves with flow in either direction. In such a design, a wedge slides cross a general passageway in order to control fluid flow (like a sliding gate – hence, the name). One of the most significant characteristics of this type of valves is its straight-through, unobstructed passageway when set in the “full open” position. This is made possible by the wedge lifting entirely out of the passageway. As a result, gate valves are characterized by a minimum of turbulence and pressure drop in operation. While gate valves are good for applications requiring these two factors, they are not recommended for installations in which throttling would be a function. They are designed for on/off service.

PartName Carbon Steel AlloySteel StainlessSteel Aluminium Bronze
Materials Specification
Body A 216 WCB / WCC A 352 LCB /LCC A 217 WC6/WC9/C5/C12 A 351CF8/CF8M/CF3/CF3M/CF8C AluminiumBronze ASTM 8148955/958
Bonnet A 216 WCB / WCC A 352 LCB /LCC A 217 WC6/WC9/C5/C12 A 351CF8/CF8WCF3/CF3M/CF8C AluminiumBronze ASTM 8148955/958
Wedge A 216 WCB / WCC A 352 LCB /LCC A 217 WC6/WC9/C5/C12 A 351CF8/CF8M/CF3/CF3M/CF8C AluminiumBronze ASTM 8148955/958
Seat Ring A 216 WCB / WCC+13% Cr. A 351 C F8 A 217 WC6NVC9/C5/C12+13%Cr/A 217 CA 15 A 351CF8/CF8M/CF3/CF3M/CF8C AluminiumBronze ASTM 8148955/958
Spindle A 276 TP 410 A 276 TP 304 A 276 TP 410 A 276 TP304/316/304U316U321 AluminiumBronze ASTM 8148955/958
GlandFlange A 105 /CS A 105 /CSA352/LCB/LCC A105/CS/217WC6/WC9/C5/C12 A1053/CS3 /A351CF8/CF8M/CF3 AluminiumBronze ASTM 8148955/958
BackSeat A 276 TP 410 A 276 TP 304 A 276 TP 410 A276 TP 304 / 316 / 304L /316L /321 AluminiumBronze ASTM 8148 955 /958
GlandBush A 276 TP 410 A 276 TP 304 A 276 TP 410 A276 TP 304 / 316 / 304L /316L /321 AluminiumBronze ASTM 8148 955 /958
JointSutd A 193 B7 A 320 L7 A 193 B16 A 193 B73/ B8 B7/B8/B8M ASTM 304/316
JointStud Nuts A 194 2h A 194 7 A194 7 A 194 2H3 /8 B7/B8/B8M ASTM 304/316
Gasket Spiral Wounded SS 316 / 316L / 304 / 304L / 321 / A-20 with grafoil filler & PTFE filler
StemPacking Braided Graphite and Die FormedGraphite ring / PTFE V-Ring Braided Graphite and Die Formed Graphite ring / PTFE V-Ring Braided Graphite and DieFormed Graphite ring / PTFEV-Ring Braided Graphite and DieFormed Graphite ring / PTFE V-Ring Braided Graphite and Die Formed Graphite ring / PTFE V-Ring Standard
YokeSleeve SG Iron / A439 Gr.D2 / Bronze SG Iron / A439Gr.D2 / Bronze SG Iron / A439 Gr.D2 / Bronze SG Iron / A439 Gr.D2 / Bronze SG Iron / A439Gr.D2 / Bronze ASTMA439/
Handwheel Malleable Iron/SG IRON Malleable Iron/SGIRON Malleable Iron/SG IRON Malleable Iron/SG IRON MalleableIron/SG IRON Standard