Typical Pressure Seal Bonnet Gate Valves
This illustration represents a typical Kinka pressure seal bonnet gate valves. There will be some minor modifications in each class, type and size.
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Body with seal-welded seat rings which are hard faced with stellite. |
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Bonnet with stellited integral backseat. |
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Yoke is mounted directly on the body. In Type B design, sizes 4" and smaller have an integral yoke and gasket retainer which is screwed into the body to hold the gasket. |
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Disc is flexible wedge type, and seat surface are hard faced with stellite. |
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Stem |
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Gasket Retainer is either a segmented ring (Type A) or one-piece threaded ring (Type B). |
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Gasket |
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Bonnet Bolts (Type A) Bonnet Nut (Type B) |
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Gland is two-piece, ball type which exerts uniform pressure on the packing without binding the stem in the event that nuts are unevenly tightened. |
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Gland Packing |
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Anti-Friction Bearings re used on most valves. |
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Handwheel or Bevel-Gear Type Valve Operator (not illustrated here) |