Ball valve for valving abrasive fluids
Ball valve having easy maintenance features for extreme environm
Ball valve having one-piece machined seat member
Ball valve having replaceable seals under full service pressure
Ball valve having valve chamber venting seal assemblies
Ball valve including seat retainer securing means and method...
Ball valve locking device
Ball valve lockout mechanism
Ball valve or cock
Ball valve or plug valve provided with an insert
Ball valve seal replacement apparatus and method
Ball valve seat assembly having a swaged seat ring to retain the
Ball valve seat ring construction
Ball valve structure
Ball valve with a strainer and integrated means for flushing the
Ball valve with built-in check valve
Ball valve with compound closure movement
Ball valve with controlled flow variation
Ball valve with emergency sealing device
Ball valve with high damping of the noise due to fluid passage