SINGER VALVE ANTI-CAVITATION VALVE Guaranteed to Eliminate Cavitation Damage in High Pressure Drop Applications. singervalve.com

“There was absolutely no sign of cavitation, not even on the coating. We couldn’t believe it.” Kelly McKague Facility Operator City of Airdrie, Alberta, Canada

Model 106-AC Automatic Control Valve with Anti-Cavitation Trim Say Goodbye to Cavitation Damage! Cavitation, a common problem in pumps and control valves, causes wear and tear, and serious damage. Cavitation can dramatically reduce the lifetime of system components and repairs are extremely costly. Singer Valve’s Anti-Cavitation Trim is one of the most innovative products in the industry today. Our dual cage Anti-Cavitation Trim eliminates damage caused by cavitation and reduces noise that occurs during the cavitation process. As a result, the life of the valve, system components and nearby piping...

Model 106-AC Automatic Control Valve with Anti-Cavitation Trim Four Serious Side Effects of Cavitation EROSION – The most dangerous effect of cavitation is erosion and corrosion damage of the control valve or the nearby downstream piping. Severe cavitation commonly erodes through a valve wall or the nearby piping in a mere matter of months resulting in the need for repair or replacement. STRONG VIBRATIONS – The shock waves generated by collapsing vapor bubbles produce pressure fluctuations and related vibration. As cavitation increases, the magnitude of the vibrations increases. Even systems...

Model 106-AC Automatic Control Valve with Anti-Cavitation Trim must be installed downstream to minimize the differential pressure across a valve. Orifice plates are sized only for a specific flow range and almost always to ensure high flow rates. During periods of lower demand, however, the differential across the orifice plate drops to the point that water flows through the plate without creating any of the needed backpressure, allowing cavitation to occur past the valve. As a result, valves with pre-fabricated anti-cavitation cages have serious limitations. The greater the pressure differential...

Model 106-AC Automatic Control Valve with Anti-Cavitation Trim The Singer Valve Advantage At Singer Valve, we care about performance. That’s why our Anti-Cavitation Trim has saved valves and the surrounding pipe systems from cavitation damage, reducing the need for maintenance. So, what’s the difference between the Singer Anti-Cavitation Trim and others on the market? Take a look. Corrosion-resistant AISI 316 stainless steel spring and stem Fusion epoxy coating inside and outside for improved flow and resistance to wear Inner cage creates sufficient back pressure for second stage of pressure...

Model 106-AC Automatic Control Valve with Anti-Cavitation Trim Typical Applications The Singer Valve Anti-Cavitation Trim is typically used in applications that have outlet pressure near or less than 30 percent of inlet pressure, such as: • Distribution Systems High Rise Buildings Reservoir Filling Reservoir Fill to Atmosphere Continuous Pressure Relief Sub-Atmospheric Considerations Distribution Systems Often in water utility distribution systems, there can be significant pressure differential or drop which may necessitate the use of anti-cavitation cages / trim. The most common use for this...

Model 106-AC Automatic Control Valve with Anti-Cavitation Trim High Rise Buildings Often in high rise buildings standard pressure reducing valves are utilized to control pressures. While there are numerous approaches to water distribution and pressure management in high rise buildings, often water is pumped to the top of a building, stored in an elevated tank and then gravity fed to the floors below. It is typical for one pressure reducing valve to supply 4 – 5 floors which requires that several valves be installed to service the entire high rise. Often the highest floors rely purely on gravity...

Model 106-AC Automatic Control Valve with Anti-Cavitation Trim Reservoir Filling At times elevated storage tanks may be supplied with high pressure with the downstream pressure being dictated by the static level of the tank, automatic control valves utilizing altitude pilots or solenoid valves reacting to level switches can often be used in these applications. If the high pressure on the upstream side of the control valve exceeds a 3:1 ratio when comparing the static head of the tank, then this would be another application where Anti-Cavitation Trim can reduce noise and eliminate damage downstream....

Model 106-AC Automatic Control Valve with Anti-Cavitation Trim Continuous Pressure Relief A very effective way of controlling outlet pressure of a pump is to relieve the excess flow back into the clear well. Obviously, this ends up being deep in the cavitation zone. Singer Valve’s Anti-Cavitation Trim is ideal for applications like this where pressures are up to 250 psi / 17.2 bar and relieving to atmosphere. High Pressure Pressure Relief Valve or Deep Well Pump Control Valve with Anti-Cavitation Trim Pump Suction Foot Valve Old distribution zone to users: Maximum 50 psi / 3 bar Continuous Discharge...

Anti-Cavitation Pressure Differential The anti-cavitation pressure chart (page 12) will help you determine the valve size you require for your application. Select the smallest valve that has the flow capacity that meets or exceeds the flow required, at a pressure differential less than the minimum available in the application. Ensure that all of the operating conditions (should they vary) for your application fall below the curve for the valve selected. The solid lines show the maximum continuous flow capacity for a fully open valve, for a given size, at the chosen pressure differential. If the...

<nti-Cavitation Pressure Chart Flow vs. Pressure Differential Model 106 Series (PG-AC, PGX-AC, PT-AC, PGM-AC) Full Port, Globe Body, Flat / Rolling Diaphragm Anti-Cavitation Valve Curve 106-415 (1 in / 25 mm - 36 in / 900 mm) Q) > £ <U aj cn u c > 10 L. a; sz j) ±i cn 5 C o CJ ^ -a £ -r\j — \ -Q fti j) ±d Q-“ § 5 ro O i_ a; > o cn 0) i_ D V) V) a) c_ Q_ Pressure Differential SINGERVALVE.COM 2016.1