5 Questions to Ask Before Ordering Custom Flanges (That Most Engineers Forget)

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Custom flanges can solve unique engineering challenges, but they can also become expensive mistakes without proper planning. After reviewing hundreds of custom flange orders, I’ve identified five critical questions that frequently get overlooked.

The most common oversight? Failing to consider future maintenance requirements. A petrochemical client recently had to shut down an entire processing line because their custom flanges couldn’t be serviced without specialized tools that had a 6-week lead time.

Before your next custom flange order, make sure you’ve addressed these essential questions:

1. Have You Fully Defined the Operating Environment?

Beyond basic pressure and temperature requirements, consider:

  • Thermal cycling frequency and range

  • Chemical exposure (including cleaning agents)

  • Vibration conditions

  • External environmental factors (marine atmosphere, UV exposure, etc.)

2. What Are the Long-Term Maintenance Implications?

Custom designs often create unique maintenance challenges:

  • Will special tools be required for installation or removal?

  • How will gasket replacement be handled?

  • Are spare parts readily available or will they require custom fabrication?

  • What is the expected service interval, and how accessible is the flange location?

3. Have You Considered All Relevant Standards and Compliance Requirements?

Custom doesn’t mean standards-free:

  • Which aspects of standard flange designs must be maintained?

  • Are there industry-specific compliance requirements?

  • Will third-party certification be required?

  • Have you documented design calculations for future reference?

At Westa, our custom flange design process begins with a comprehensive consultation to address these critical questions. Our engineering team works closely with clients to develop designs that not only solve immediate technical challenges but also consider long-term operational implications.

What sets our approach apart is our practical experience across multiple industries. We’ve designed and manufactured custom flanges for applications ranging from high-pressure subsea systems to specialized chemical processing equipment, giving us insight into the real-world factors that determine success or failure in custom flange applications.

This experience allows us to identify potential issues early in the design process, often suggesting modifications that improve manufacturability, reduce cost, or enhance long-term reliability. Our clients particularly value this consultative approach, which helps them avoid the expensive pitfalls that often accompany custom component development.

Contact Westa’s engineering team today to discuss your custom flange requirements and benefit from our design expertise

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