A True Blue air actuated ball valve with a limit stop can maintain any desired set flow from virtually closed up to full capacity of the valve. Two types are available, one for air x air actuators (Actuators ABVA & ABRA) and one for air x spring "fail safe" actuators (ABVS & ABRS).
A simple stainless steel adjusting screw is used to limit the stroke of the air actuator position. Turning the adjusting screw clockwise limits the opening of the ball valve. The limits stops can also be used with limit switches for throttling.
.dwg format not yet available. We recommend either right-clicking on the appropriate dimensional drawing above, then doing a "save as," or you can download any of the ABV or ABR actuator CAD drawings and indicate the limit stop based on the dimensions shown above.
Ball Valves Index Page -- Overview and links to all ball valves, actuators, and accessories. Possibly the page you were on prior to this one.
Series SW -- Accessory Limit Switches for actuated ball valves. Used with Series LS on this page for configuring a throttling control.
Series MBV -- True Blue Ball Valves -- Manual version of Plast-O-Matic's popular ball valve line; constructed with integral mounting lugs for easy addition of an actuator when needed. Features also include Trunnion design, steel reinforced shaft (not in liquid) and PTFE thrust washer. 2-way and 3-way designs. Socket, threaded, flanged ends, NPT, BSP or Metric; customizing available.
Series EBV -- Actuated Ball Valves -- Electrically powered actuators for 2-way and 3-way ball valves, all sizes. Features Standard Manual Override.
Series ABV -- Actuated Ball Valves -- Pneumatically or hydraulically powered actuators for 2-way and 3-way ball valves, sizes 1/2", 3/4", and 1". Air x air and "fail safe" air x spring models available; converts easily between types. Manual override standard.
Air-Operated Diaphragm Valves and Globe Valves- Perhaps your application requires more rapid shut-off, or you want to use line pressure to open the valve, or have other reasons you don't specifically want a ball valve. If so, True Blue ASO, BSD, or BSR is likely to meet your needs.
Series TABV & TABR -- Actuated Ball Valves -- Explanatory page for pneumatically or hydraulically actuated 3-way ball valves, all sizes. For actuator specifications, use the above links for the appropriate size.
Online Pressure Drop Calculator -- Allows you to easily determine the probable pressure drop across a valve. Note: For comparison and illustrative purposes only; not to be relied on for system design.
5 Most Common Mistakes When Specifying Valves
Valve Pressure Loss & Flow - Q&A and Equations
(Explains Cv and Delta P, how to better
specify valves, etc.)
Catalog SW/LS
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Kynar ® is a registered trademark of Elf Atochem.,
Corzan tm is a trademark of B.F. Goodrich
True Blue Valves ® is a registered trademark of Plast-O-Matic Valves, Inc.
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