Articles
Fixed Cone Valves: The discharge of the flow is controlled by the movement of the sleeve of the valve against the fixed cone. The fixed cone valve discharges the raw water from dams and penstocks to free air, chamber or underwater level. This valve is especially suitable to dissipate very high energy without any cavitation when discharge is made into free air. In the case when the water is discharged into chamber or underwater, Nencini is capable of designing the stilling pool or basin which are of primary importance for the effectiveness of the discharging and dissipation system...
Used as turbine by-pass in Hydro Power Plants, Vertical Sleeve Valves allow for high pressure reduction, with little risk of cavitation, vibration, or noise in applications with high differential pressures. Typically used as a synchronous discharge tool for turbine generation plants both on Pelton or Francis turbines...
May 11, 2021: LinkedIn - Anti-cavitation Axial Control Valves for Potable Water, Mike Botha
The Kettle Creek Flow Control Facility controls the flow of potable water from two treatment plants in the mountains into the city of Colorado Springs, CO. The facility balances the distribution of water from each plant to over 70% of the city's population of 500,000. Mokveld was selected to provide the two anti-cavitation axial control valves, installed in parallel operation, subjected to challenging operating conditions. The excellent design of these valves manages the fluid velocity in all areas of the valve, preventing cavitation, vibration, and noise...
Glasco UV's "NONCON 5000" ultraviolet (UVC) water and wastewater disinfection systems utilize special fluoropolymer (FEP, aka Teflon) tubes to transport fluid in close proximity to the UV lamps, unlike other systems where UV lamps are immersed in the water (using protective quartz sleeves). Lamps are positioned around the highly-transparent, non-conductive (neutrally charged) tubes, thus are not subject to fouling and scaling from positively charged minerals.