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  • John Braun

Understanding the Function of DeZURIK Surge Relief Valves: Protecting Pumping Systems from Surge Waves

Updated: Mar 1



When it comes to protecting pumping systems from the potentially damaging effects of surge waves, not all solutions are created equal. In the vast spectrum of flow control and protection equipment, DeZURIK’s Surge Relief Valve, the SRA-3000A, emerges as an exceptionally engineered solution. In this article, we'll delve deep into the intricacies of surge waves, understand why they are a cause for concern, and explore how DeZURIK’s Surge Relief Valve stands out from traditional surge protection mechanisms like surge tanks.


The Menace of Surge Waves

Surge waves, commonly known as water hammer, occur due to sudden changes in the velocity of the fluid within a pipeline. This can happen when pumps stop abruptly or valves close quickly, causing a rapid change in flow. The resulting pressure spikes can cause severe damage to pipes, fittings, and valves. In worst-case scenarios, the uncontrolled surge wave can lead to pipeline rupture, endangering both equipment and personnel.


Enter the DeZURIK Surge Relief Valve

DeZURIK Surge Relief Valve
DeZURIK Surge Relief Valve

Designed meticulously, the DeZURIK Surge Relief Valve operates by detecting and responding to these pressure surges. When a sudden overpressure is sensed, the valve opens quickly, redirecting the excess flow and pressure, thus protecting the downstream system. The surge pressure is both dissipated by the valve as well as ported away from the pumping system. The pressure in which the SRA-3000 functions is set at the factory based upon the system's particular surge characteristics but can also be adjusted once installed. Once the surge condition subsides, the valve closes slowly (also field adjustable), ensuring no secondary surges are introduced to the system.

A surge relief valve is usually installed downstream of pumping system components such as control valves, check valves, etc. When the valve opens the valve outlet is piped to a sump.


Why Surge Relief Valves Over Surge Tanks?

While surge tanks have been traditionally used to combat the effects of water hammer, there are compelling reasons to consider the DeZURIK Surge Relief Valve as a superior alternative:


  • Precision and Speed: DeZURIK’s Surge Relief Valves are designed to act swiftly and with precision, offering faster response times compared to surge tanks. This ensures that the excessive pressure is relieved almost instantaneously.

  • Compact Design: Unlike large surge tanks that can be cumbersome and require significant space, surge relief valves have a more compact footprint. This design aspect can be crucial in facilities where space is at a premium.

  • Maintenance and Longevity: Surge tanks, with their larger sizes and multiple components, can be more challenging and costly to maintain. In contrast, DeZURIK’s Surge Relief Valve offers a robust design that's easier to maintain and promises longer service life.

  • Cost Efficiency: From an installation perspective, surge relief valves are more cost-effective than installing a surge tank, especially when considering the ancillary equipment and infrastructure required for the latter.

  • Energy Efficiency: Surge relief valves are not powered.


The Bottom Line

In the dynamic world of fluid systems, the protection of assets from unpredictable surge waves is paramount. DeZURIK’s Surge Relief Valve, with its rapid response mechanism, compact design, and maintenance-friendly features, offers a robust shield against the perils of surge waves.

By understanding the mechanics of surge waves and designing a valve that directly counters their destructive potential, DeZURIK showcases its commitment to innovation and the safety of pumping systems. For those seeking a modern, efficient, and reliable solution to the age-old problem of water hammer, the DeZURIK Surge Relief Valve stands tall as the gold standard.


Contact your local DeZURIK representative for a free surge analysis of your pumping system today!

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