How to Detect Internal Descale Valve Leaks Before it Wrecks Your System

Posted April 18, 2017

If you’ve been in the descaling industry for a long time, you’ve likely encountered your share of valve leaks. Leakage in descale valves can quickly turn into an entire system nightmare. We’ve got a guide that explains how to prevent leakage by selecting the right valve. But what if you have a leak in your current valve? How can you identify a leak and how do you handle it?

Identifying Leaks


Valve leakage image.jpgLeaks can be external or internal
. External leaks are obvious. Just look for the puddles and spraying water. Internal leaks aren’t as easy to notice. But, if not dealt with quickly, they can damage other areas of the descaling system and cause bigger issues. This also takes the system down for longer periods of time to fix. To make sure this doesn’t happen, here are some indications of an internal leak:

  • Pressure loss.
  • Noise in the system.
  • Pump running more often than usual.
  • Heat build-up in the system.
  • Drops in the accumulator level.
  • Continuous flow from the descale nozzle.

Typically, once detected, it’s clear which valve or cylinder is affected and can find the source of the problem.

The cause of most leaks are related to operation, flow media contamination and stem misalignment. There can be other issues, but what should you do when you identify a leak?

Leakage Solutions

Once you detect a leak, it doesn’t take long before causing additional damage. You need to fix it as soon as possible. That usually means shutting the system down to replace worn seals or components. Although many plants will try to avoid unscheduled system shutdowns, Hunt Valve doesn’t advise waiting for a scheduled maintenance outage. Fixing the leak quickly will restore the system’s efficiency and productivity to optimal levels and prevent additional damage to other areas of the system.

Adhering to preventive maintenance inspections and service is another way to take care of internal leaks before they become a problem. It also increases work safety and lowers overall maintenance costs. Learn more about preventive maintenance by downloading our guide, Realizing the Benefits of Preventive Maintenance for Hydraulic Valves.

Preventive Valve Maintenance

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