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Motor Actuated Valve Application Guide Ball Valves
alternative. For three-way operation, ball valves should only be applied in diverting service to maintain their inherent equal percentage type flow characteristics and extend seal life. For valve sizes 2-1/2"and up, the butterfly valve is the most cost effective solution. Beginning at 2-1/2", material
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Valve Handbook
, eccentric plug valve, throttling situations, piston cylinder actuators, gland flange, globe control valve, disassembly clearance, general service valves, breakout torque, ball control valves, increase stem friction, leak definition concentration, minor galling, rated valve capacity, stem retracts
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Worcester Controls Corp. Eliminates Galling and Boosts Ball Valve Life 50% With Mirror-Smooth Coating
For more than four decades, Worcester Controls Corporation has been on the leading edge of ball valve and flow control technology. The Marlborough (Mass.) company has always prided itself on making and selling state-of-the-art products of the highest quality. So Worcester was seriously concerned
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Valve Terms & Acronyms Explained
: Water/Oil/Gas. Describes a common type of brass valve. X-VALVE: A Plast-O-Matic term used to describe any type of custom valve. "Q-valve" is used to describe custom ball valves. For additional information, please return to the Plast-O-Matic Tech Info Center. Plast-O-Matic Valves, Inc. 1384 Pompton
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Electronic Valve Application Guide (.pdf)
valve. Section 5 on rangeability. Round ball reduced port valves do not have as bad a quick. In general globe valves are used in pipe sizes from 1/2" to 6". opening characteristic, but they have more delay. With the ball. set up for a 90° rotation, they delay opening until about 20°. Standard Ball
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Establishing a new method for determining valve flow coefficient
. As an example, a ball-type valve has a very low xT, well below 1 2, whereas a globe-style valve would have an xT significantly higher than 1 2. As shown in Figure 1, valve geometry determines the choked flow pressure ratio. Valves with complicated or circuitous flow paths tend to have numerically high xT
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Assured Automation's Automated Valve Makes Waves Bringing National Recognition to Long Beach Parks Department
Valves Manual w/ Limit Switches Automated Valves Stainless Steel Valves Brass Valves Plastic/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
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Fluid Transfer Valves
, and the self-wiping action of the seat as the ball-plug rotates prevents any buildup of contamination to impede full closure of the valve. Ball valves were developed as on-off valves without much attention given to throttling characteristics. However, design improvements have suited ball valves for some types