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Ball valves provide tight shut-off and characterizable control. They have high rangeability due to the design of the regulating element and few complications from side loads typical of butterfly or globe valves.
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  • Miniature ball bearings: Handle with care
    fully seat against shoulders. Most bearing catalogs give these specs. Simon Harrison. President. Dynaroll Corp. San Fernando, Calif. Miniature and instrument-sized ball bearings excel in jobs needing predictable levels of torque, runout, and stiffness. Here, tolerances and finishes measured
  • How to Choose a Ball Valve to Control Fugitive Emissions (.pdf)
    the housing but floats between two seats. In the shutoff position (Fig.3), the ball seals against the seat on the low-pressure side, pushed downstream by a positive pressure differential. By contrast, the trunnion design employs a ball, but the ball is not a discrete sphere. Rather, its geometry includes two
  • Worcester Controls Corp. Eliminates Galling and Boosts Ball Valve Life 50% With Mirror-Smooth Coating
    when it discovered galling of the stainless steel balls used with the powdered metal seats of some of their valve models. "Immediate action was necessary to correct the problem," says Product Manager Mike Miles. "We took a close look at every component involved in the valves' manufacture." Worcester's
  • Featured Application of Assured Automation's 4100 and 4200 Series Flanged Ball Valves
    /PVC Valves Ductile Iron Teflon Lined Butterfly Valves Ball Valves Plug Valves Coaxial Valves Angle Seat Valves Actuators --- Valve Series --- Ares / Zeus 008 / 009 061 067 101 21 26 282 31D 33D 36 4000 911 FE FK HPL / HPW J P2 PTP STW / STL VA VAX Accessories E & P Actuators Control Boxes - Flow
  • Motor Actuated Valve Application Guide Ball Valves
    Ball Valve - Clark Solutions. Valves >> Motor Actuated Ball Valves >> Motor Actuated Valve Application Guide. CLARK SOLUTIONS. Motor Actuated Valve Application Guide. INTRODUCTION. The control valve is one of the most important items in a fluidic system. If greater attention were paid to the proper
  • Beware Thermal Cycling in BioProcessing Part One
    , and containment of the PTFE seal member, in this case the seat, apply. Generally, surface finish on the ball is not a problem.Most manufacturers use spherically ground balls, and unless the surface is somehow damaged, the surfaces are satisfactory. The seats, however, can be a problem. The shape
  • Titleist Case Study: There's More Than One Green in Golf
    Back in 1999, Titleist was thinking green. Not golf green; environmental green. At the Acushnet Company, maker of Titleist brand golf balls, protecting the environment is a longstanding commitment. So is delivering top quality golf balls. And deliver they do; 1,000,000 golf balls per day
  • Step Closer to the Holy Grail (.pdf)
    Valve manufacturers have been improving, modifying and redesigning valves for years in an attempt to reach a zero leakage valve. People have tried Gate valves with special hard facings or special wedging actions, ball valves with two seats or seats made from elastomers, seats of all types of metals

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