What is a Digital Valve?

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What is Digital Valve?

The Digital Valve is a unique Mass Flow Control System (MFCS) designed for rapid and simultaneous fluid metering and control. 

The MFCS consists of Digital Valve (DV) and Digital Control Unit (DVCU).

Digital Valve (DV) is an array of parallel- arranged flow restrictions - usually nozzles or sonic holes - which each operate on / off (flow, no-flow).




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With this arrangement, the flow rate can be changed by adjusting the combination of open/closed
elements. Each active element allows fluid to flow between the common entrance and exit space (plenums). Because the pressure drop between plenums is the same for all elements, the active element will flow at a rate proportional to the restrictor area. This results in a stream that will be "digitized" because each flow restrictor area is the precise fraction of the total flow.

The Digital Valve Control Unit (DVCU) calculates and controls the mass flow known through the Digital Valve (DV). The calculation of mass flow is based on sonic flow, using valve inlet pressure and valve inlet temperature. Mass flow control is achieved by selecting the appropriate combination of valve elements to produce a specified flow rate. 

The calculation cycle and control can be adjusted, with a minimum cycle time of 100 ms. The electronic package provides an interface between sensors, digital valves, and control computers. The control program runs on a standard Windows-based computer. The interface between the computer and the electronic package is via an RS-485 link or an Ethernet link.



Contact Us: Parth Valves And Hoses LLP
Address : J Block, Plot No-209, MIDC Bhosari, Near Shivanjali Hotel Pune-411026, Maharashtra, India.
Mobile No. : + 91 - 98812 36139, 7722076899

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