This unchanged technology is unfortunately common among many control valves, in particular the globe valve, which happens to be one of the most widely used control valves in oil & gas, petrochemical, and refining markets.
Created with aerospace design principles, the Dilating Disk™ was engineered as a solution for inefficient control valve applications. The Dilating Disk™ offers precise flow control at about 50% of the size, weight, and cost of a globe valve. This valve has been found to be compatible in carrying out the same functions as globe valves.
The Dilating Disk™ product line can deliver a CV equivalent to a much larger globe valve, while the aperture of the valve produces a centralized flow stream, allowing for exceptional process control and zero pressure drop. The Dilating Disk™ also provides greater volumetric flow and rangeability, while still weighing less than the comparable globe valve. In order to determine which Dilating Disk™ in the product line will have the appropriate flow capacity and characteristics for the process conditions, a sizing analysis must be conducted. Process engineers use a specialized procedure for sizing valves, to ensure that the Dilating Disk™ will meet or exceed all the requirements for the intended application.
The aperture of the Dilating Disk™ opens perpendicular to the flow of the process fluids, requiring significantly less torque to open and close the valve. The low torque of the valve allows for a smaller actuator, reducing the weight, size, and cost of the installed unit. The Dilating Disk™ is designed to be used with any quarter-turn actuator that can mount to a standard ISO 5211 pattern.
Engineered to be a plug-and-play control valve replacement, the Dilating Disk™ is easy to service and re-assemble.
Once installed, little to no training is required for operators or technicians to maintain these valves. Designed to conform to the face-to-face dimensions for globe valves defined by the ISA 75.08 and ASME B16.10 standards, the Dilating Disk™also requires no existing piping to be modified when being installed. This plug-and-play feature makes it easy for customers to upgrade to the Dilating Disk™ with little to no cost when switching out their existing valves.
In addition to being lighter, smaller, and less expensive than the globe valve, the Dilating Disk™ is also more environmentally friendly than other “low emissions” control valves. The Dilating Disk™ is ISO 15848 and API 641 certified to reduce fugitive stem emissions by 98%.
The Dilating Disk™, available from Clarke Valve™ and Made in the USA, was developed to provide customers with a better option for control valve applications. The unique design of the Dilating Disk™ allows it to seamlessly replace a globe valve with equivalent flow rate, at about 50% of the overall size and weight. Engineered to deliver a centralized flow stream, the Dilating Disk™ is also capable of minimizing the gradual wear that occurs over time with comparable control valves.The intrinsically superior technology allows this valve to provide more value than a globe valve, while still supplying the same flow rate and ease of installation. Available to be installed in piping from ¼” to 12”, Clarke Valve™ designs and builds each Dilating Disk™ with the customer’s specific application in mind.
