Steam traps are valves that were designed to optimize system efficiency by collecting steam condensate and redirecting back to the boiler feed system. All mechanical devices are prone to wear and tear over time, so they require scheduled maintenance. Steam traps are no exception. They sometimes need repairs to ensure they’re still up to the manufacturer’s standards. These repairs are essential to prevent blockages or leaks in the system. The good news is there are several methods that can be used to test how well a unit’s steam trap is operating, such as performing an ultrasound, visual observation, and temperature detection. Some common methods are outlined in the article below.

Surveying the Traps with Temperature Readings

The first step is to measure the trap’s inlet condensate temperature to detect if it’s functioning correctly. The optimal temperature of the trap’s inlet should be close to that of the saturated vapor. There should be a variation only if you have manually cooled the device when testing for low temperatures.

Temperature readings are also helpful in detecting blockages in the traps. Blockages can easily be seen due to the accumulation of condensed air that reduces the trap’s temperature. The low reading reveals pressure imbalances that can lead to discharge failure. Although, avoid using temperature readings to detect leaks because the results won’t be accurate with this method.

Surveying Traps with the Use of Sound

Condensed air is usually dense. Because of this, its flow produces sounds that are comparable to the opening and closing of the trap’s valves. When these traps stop functioning optimally, due to either blockage or wear, you will notice a different sound. This can be a simple way to test the functionality of the trap.

The sound produced by condensed air is usually low in comparison to a whistling noise that results from steam leakage. Whenever you notice the sound shift from a low pitch to a high pitch, either the trap has a lot of flash steam, or there’s a leak that needs to be inspected more closely.

Testing Through Visual Observation

Although the scope may be somewhat limited, visual observation can also be used during your steam trap survey. One option is to install a sight glass at the trap’s outlet. If there’s any leakage, vapor will form on the glass, preventing you from performing visual analysis. Moreover, you can determine the steam trap is not functioning well if you cannot see any form of condensation on the steam trap. Additionally, in your list of visual tests, remember to check for gasket leaks and connection joints.

Schedule Maintenance

Plan for regular maintenance tests on your steam trap. This important upkeep ensures everything is functioning the way it was designed to, and also prolongs its usefulness. Scheduling regular boiler service and repair for any faulty parts will keep your unit in tip-top shape. For the best results, contact us at Bay City Boiler at (510) 786-3711, or email sales@baycityboiler.com.