Typical Pressure Seal Bonnet Stop Check Valves
This illustration represents a typical Kinka pressure seal bonnet stop check valve. There will be some minor modifications in each class, type and size.
- Body (The seat is formed on the body by stellite hard facing deposit).
- Bonnet with stellited integral backseat.
- 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.
- Disc is swivel plug type, and seat surface is hard faced with stellite. Ball type or needle type disc can be provided when so requested.
- Stem
- Gasket Retainer is either a segmented ring (Type A) or one-piece threaded ring (Type B).
- Gasket
- Bonnet Nut
- 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.
- Gland Packing
- Anti-Friction Bearings are used on most valves.
- Handwheel or Bevel-Gear Type Valve Operator