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How Often Should You Replace Butterfly Valves on Storage Tanks?

Meta Description: Learn how often butterfly valves on frac tanks and ASTs should be replaced, what affects their lifespan, and best maintenance practices to avoid costly failures.

Butterfly valves are essential components in fluid storage systems, regulating flow and ensuring safe, efficient operation. Whether you're managing frac tanks on an oilfield site or operating ASTs in an industrial setting, knowing when to replace these valves is key to keeping your operation running smoothly. So, how often should butterfly valves be changed out on tanks?

What Is a Butterfly Valve and Why Does It Matter?

Butterfly valves are flow control devices used in fluid handling systems. They consist of a rotating disc that opens or closes to regulate flow. Because they're compact, easy to operate, and cost-effective, butterfly valves are widely used in frac tanks, above-ground storage tanks (ASTs), and other fluid containment systems. A failing valve can lead to leaks, downtime, or even environmental compliance issues. That’s why regular inspection and timely replacement is a must.

Typical Lifespan of a Butterfly Valve

Under standard conditions, a well-maintained butterfly valve can last anywhere from 2 to 5 years. However, this varies widely based on:

• Tank usage frequency
• Type of fluid stored (e.g., corrosive chemicals vs. water)
• Operating temperature and pressure
• Environmental exposure (dust, salt, extreme heat or cold)

For example, butterfly valves on frac tanks used in hydraulic fracturing may wear out faster due to abrasive materials and high cycling rates.

Signs It's Time to Replace a Butterfly Valve

While there’s no

one-size-fits-all replacement schedule, you should consider changing a butterfly valve if:

• It becomes difficult to open or close
• You notice leaks around the valve stem or body
• The valve no longer seals properly, allowing backflow
• There’s visible corrosion or damage on the disc or seat

Regular inspections—every 6 to 12 months—can catch these issues early and prevent more costly failures.

Best Practices for Valve Maintenance and Replacement

To extend the life of your butterfly valves and avoid unplanned shutdowns:

• Schedule routine inspections: Check valves during tank cleanouts or after every major use cycle.
• Use compatible materials: Ensure the valve seat and disc materials are suited for the type of fluid stored.
• Keep spare valves on hand: Especially for high-use tanks, having replacement parts ready can reduce downtime.
• Work with a trusted supplier: At BX Tank Supply, we offer both new and refurbished tanks with fully inspected valve assemblies.

If you're dealing with aging frac tanks or ASTs, consider exploring our selection of refurbished ASTs that come with upgraded valves and components.

When in Doubt, Contact the Experts

If you're unsure whether your butterfly valves are due for replacement, the safest route is to consult with a fluid storage professional. Our team at BX Tank Supply can help assess your system, recommend the right valve materials, and even supply replacement tanks with high-quality fittings.

Conclusion

While butterfly valves don't have a fixed expiration date, their performance should be monitored closely—especially in high-demand environments like oil & gas or industrial operations. By inspecting valves regularly and replacing them every few years, you can avoid downtime, extend tank life, and ensure safe fluid storage. Need help sourcing tanks or replacement components? Learn more about BX Tank Supply and how we support your operation with durable, cost-effective fluid containment solutions.