There are only a limited number of mechanisms that can be used to dissipate energy and to drop the pressure gradually so that high velocity/low pressure regions can be avoided, essential if the valve is not going to be severely damaged through cavitation.
The main mechanisms for liquid applications are friction and changes of direction - both of which cause pressure energy to be converted into heat. Mitech uses both of these to maximum effect in its energy dissipating disk stack trim.
One such valve is an angle valve with an ANSI 4500# inlet and an ANSI 300# outlet. According to ASME standards the test pressure for valves is 1,5 times the working pressure - which in this case is 115 MPa (1150 bar). A special seal arrangement in the plug head was developed to create a bubble tight shut-off at this pressure. Although this valve is to be used for testing a pump, the same design would be suitable as a minimum flow bypass valve necessary to protect the pump in normal operation.
Compact valve position indicator Emerson Automation Solutions
Valves, Actuators & Pump Control
Emerson’s new TopWorx DVR Switchbox is an entry-level addition to the DV Series of valve position indicators. It combines a durable resin enclosure, compact size, and a patented cam design that provides a reliable valve position feedback for water and wastewater systems, food and beverage production lines, and industrial utilities.
Read more...Precision, control and performance in regulators and control valves Valve & Automation
Valves, Actuators & Pump Control
Cashco has long been a trusted name in industrial control solutions, offering a broad range of regulators and control valves designed to meet the rigorous demands of various industries. There are two key Cashco product lines, its regulators and the Ranger QCT control valve.
Read more...Advanced solutions for valves Bearing Man Group t/a BMG
Valves, Actuators & Pump Control
BMG delivers state-of-the-art valve solutions to diverse industries across Africa, in collaboration with InterApp, a global leader in the design and manufacture of high-quality valves.
Read more...ENERGYValves expands operations
Valves, Actuators & Pump Control
ENERGYValves is expanding its operations with a new facility in Cape Town. The new premises will significantly enhance the company’s capacity to serve the Cape Town market and surrounding areas.
Read more...Inspection system for leak detection in valves in hazardous areas Extech Safety Systems
Valves, Actuators & Pump Control
Leaking valves in industrial plants not only lead to loss, safety risks and possible contamination and pollution, but also result in high economic costs. Therefore, valves in hazardous areas require regular proper inspection and preventive maintenance to ensure their functionality.
Read more...High-flow solenoid valve Emerson Automation Solutions
Valves, Actuators & Pump Control
Emerson has introduced the new ASCO Series 327C solenoid valve, which features a direct-acting, high-flow design that provides superior flow-to-power ratio. It permits high flows at minimum power levels, making it ideal for use in power plants, refineries, and chemical processing facilities.
Read more...New system improves performance of magnetic drive pumps
Valves, Actuators & Pump Control
KSB Pumps and Valves has introduced its ground-breaking MagnoProtect system for the local petrochemical, chemical and general industry markets ,to enhance the safety and performance of its magnetic drive pumps.
Read more...Emerson software optimises maintenance Emerson Automation Solutions
Valves, Actuators & Pump Control
Emerson has announced the Plantweb Insight Valve Health Application, a powerful software tool that combines Fisher control valve expertise with advanced analytic algorithms. The new app makes it possible for users to visualise an entire connected fleet of valves, while prioritising actions based on the health index of each valve.
Read more...Inline pumps for space-saving applications
Valves, Actuators & Pump Control
Pump manufacturer, KSB Pumps and Valves has introduced its latest EtaLine range of inline pumps, including the advanced EtaLine Pro for diverse applications such as HVAC, industrial recirculation, and heating systems.
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