Reduce Pressure Gradually in Stages<\/strong><\/p>\n\nInstead of applying a very high pressure differential across a single valve, gradually reducing the pressure in stages, where appropriate, can help reduce the risk of cavitation.<\/p>\n\n
UNOX\u2019s pressure-reducing control valve documentation also recommends reducing the pressure in stages using two pressure-reducing control valves when a low outlet pressure is required. <\/p>\n\n
Consider Cavitation-Resistant Valve Designs<\/strong><\/p>\n\nIn applications where high pressure drops are unavoidable, specialized designs such as anti-cavitation trim can be considered instead of standard valves.<\/p>\n\n
In these types of designs, the pressure drop is divided into multiple stages to maintain the minimum pressure inside the valve in a more controlled manner. <\/p>\n\n
Consider the Kv Value When Selecting a Valve<\/strong><\/p>\n\nThe Kv value is an important selection parameter that indicates how much flow a valve can provide at a given pressure differential.<\/p>\n\n
A valve with an incorrect Kv value may not provide the control range required by the system. Therefore, flow rate, pressure differential, and Kv value should be evaluated together when selecting a valve. <\/p>\n\n
In Which Systems Is Cavitation More Common?<\/strong><\/p>\n\nThe risk of cavitation becomes particularly important in systems where liquid fluids are controlled under high pressure differentials.<\/p>\n\n
For example:<\/p>\n\n
\n- Water treatment plants<\/li>\n\n\n\n
- Pump systems<\/li>\n\n\n\n
- Pressure reduction stations<\/li>\n\n\n\n
- HVAC systems<\/li>\n\n\n\n
- Energy facilities<\/li>\n\n\n\n
- Chemical Plants<\/li>\n\n\n\n
- Process lines<\/li>\n\n\n\n
- Industrial water systems<\/li>\n\n\n\n
- High-pressure liquid pipelines<\/li>\n<\/ul>\n\n
The potential for cavitation should be considered when selecting valves for applications such as these.<\/p>\n\n
How Does Cavitation Affect Valve Life?<\/strong><\/p>\n\nCavitation should not be regarded merely as a temporary noise problem.<\/p>\n\n
The repeated formation and collapse of bubbles can cause microscopic damage to the metal surfaces inside the valve. Over time, this damage can worsen and develop into surface erosion. <\/p>\n\n
As a result:<\/p>\n\n
Cavitation \u2192 surface erosion \u2192 sealing problems \u2192 performance loss \u2192 maintenance \u2192 valve replacement<\/strong><\/p>\n\nThis can result in a cost chain that progresses as follows.<\/p>\n\n
Therefore, detecting cavitation at an early stage is important not only for valve life but also for overall plant operating costs.<\/p>\n\n
Proper Valve Selection Reduces the Risk of Cavitation<\/strong><\/p>\n\nOne of the most effective ways to prevent cavitation is to select the valve based not only on its DN and PN ratings, but also on the system\u2019s actual operating conditions.<\/p>\n\n
Particularly in applications with high pressure differentials;<\/p>\n\n
Flow rate + pressure + temperature + fluid + Kv + valve type + operating range<\/strong><\/p>\n\nshould be evaluated together.<\/p>\n\n
UNOX\u2019s valve selection guidelines also emphasize that flow rate, flow velocity, pressure loss, fluid properties, and the Kv value should be considered together when determining the valve size. <\/p>\n\n
At this point, conducting an application-specific technical evaluation to determine the right product is a safer approach than relying on a standard valve selection.<\/p>\n\n
Conclusion: Prevent Cavitation Before It Causes Valve Failure, Not After<\/strong><\/p>\n\nValve cavitation is a problem that should not be overlooked, especially in liquid systems operating under high pressure differentials.<\/p>\n\n
A process that begins with noise and vibration can, over time, lead to erosion of the valve\u2019s internal surfaces, reduced control performance, and even severe equipment damage.<\/p>\n\n
To reduce the risk of cavitation:<\/p>\n\n
\n- The correct valve size should be determined,<\/li>\n\n\n\n
- Flow rate and pressure differential should be calculated,<\/li>\n\n\n\n
- Operating temperature should be taken into account,<\/li>\n\n\n\n
- The valve\u2019s Kv value should be selected correctly,<\/li>\n\n\n\n
- If necessary, the pressure should be reduced gradually,<\/li>\n\n\n\n
- For high \u0394P applications, cavitation-resistant valve solutions should be considered.<\/li>\n<\/ul>\n\n
If you are unsure which valve type would reduce the risk of cavitation in your project or which Kv value is appropriate, it is important to seek professional technical support and provide details about your application, including operating pressure, flow rate, temperature, and fluid properties.<\/strong><\/p>\n\nUNOX\u2019s pressure-reducing control valve documentation also clearly states that the risk of cavitation should be evaluated, particularly in relation to pressure settings. <\/p>\n","protected":false},"excerpt":{"rendered":"
What Is Valve Cavitation? What Causes Cavitation? 1. High pressure drop 2.High fluid temperature 3.Low outlet pressure 4. Incorrect valve<\/p>\n","protected":false},"author":1,"featured_media":71878,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1715],"tags":[],"class_list":["post-72769","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-unox-blog"],"_links":{"self":[{"href":"https:\/\/unox.com.tr\/en\/wp-json\/wp\/v2\/posts\/72769","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/unox.com.tr\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/unox.com.tr\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/unox.com.tr\/en\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/unox.com.tr\/en\/wp-json\/wp\/v2\/comments?post=72769"}],"version-history":[{"count":0,"href":"https:\/\/unox.com.tr\/en\/wp-json\/wp\/v2\/posts\/72769\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/unox.com.tr\/en\/wp-json\/wp\/v2\/media\/71878"}],"wp:attachment":[{"href":"https:\/\/unox.com.tr\/en\/wp-json\/wp\/v2\/media?parent=72769"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/unox.com.tr\/en\/wp-json\/wp\/v2\/categories?post=72769"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/unox.com.tr\/en\/wp-json\/wp\/v2\/tags?post=72769"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}
![\"\"](\"https:\/\/unox.com.tr\/wp-content\/uploads\/2026\/05\/unox-logo.webp\" "\\"\\""){kind=logo}
<\/p>\n\n