Integrated Rings in BFM® Fittings
As industries evolve, so do the needs for better solutions in bulk material handling. When choosing the right BFM® fitting, one of the considerations is integrating rings into the fitting sleeves for added support. This can prevent sleeve collapse, which may occur due to factors such as sleeve length, vacuum conditions, or movement. Understanding when and where to incorporate integrated rings into your BFM® fittings is crucial for ensuring reliable performance.
Here’s an updated guide on how to determine if rings are the right solution for your BFM® fitting needs.
Why Integrate Rings in BFM® Fittings?
Sleeve Length: The primary factor that determines the need for rings is sleeve length. If your sleeve is longer than 8”, adding rings at regular intervals (typically every 4”) can prevent collapsing. For shorter sleeves (around 6”), you can still use rings, but they will be spaced 3” apart.
Types of Rings and Their Applications
Plastic Rings: Ideal for Lightweight Sleeves and Metal Detector Compatibility
Plastic rings are often the best option for installations where sleeve length needs to be increased without adding excessive weight. This is particularly useful for applications involving metal detectors, as longer sleeves are required for proper connections before and after the detector. Plastic rings are also the only option for sleeve diameters of 22” and above, ensuring the sleeve remains functional without compromising its lightness.
Stainless Steel Rings: Strong and Durable for Heavy-Duty Applications
Stainless steel rings are commonly used when plastic rings aren’t suitable or necessary. Some scenarios where stainless steel rings shine include:
- Negative Pressure (Vacuum): Stainless steel rings prevent the connector from collapsing under negative pressure situations.
- Long Connectors: In cases where long sleeves are required, stainless steel rings serve as reinforcements to avoid collapse.
- Telescoping Applications: For telescoping systems, such as those used in Bulk Bag Unloaders, stainless steel rings help maintain structural integrity.
When Not to Use Rings
Rings may not be necessary or feasible in some circumstances, including:
- Short Sleeves: Sleeves shorter than 6” won’t provide enough room for ring integration.
- Tapered Sleeves: Tapered sleeves cannot accommodate integrated rings.
- Large Diameter Sleeves: For diameters over 1,050mm (41 1/3”), rings are typically not suitable.
Material Compatibility for Ring Integration
Not all materials are compatible with integrated rings. Here’s a quick overview:
Materials That Support Ring Integration:
- 040E
- 020E
- 040AS
- LM4
- LM3
- Teflex (Brown)
- Caps/Overs Containers
- Tool Release (Up to 650mm in diameter)
Materials Not Suitable for Ring Integration:
- 060ES
- Kevlar/Blackout Cover
Consult with an expert when selecting materials for your BFM® fittings to ensure compatibility.
Flexi Sleeves: An Alternative to Rings
If you’re looking for more advanced options in flexible connectors, you might come across Flexi sleeves. These integrate a continuous stainless steel coil rather than individual rings. There are three varieties of Flexi sleeves: light, earthed, and standard.
Flexi sleeves are ideal for applications where:
- Vacuum Resistance: Similar to rings, they hold up well under vacuum conditions without collapsing.
- Diameter Consistency: Unlike rings, which can compress and change diameter, Flexi sleeves maintain their size under pressure.
- Offset Handling: Flexi sleeves are particularly effective in installations with extreme offset requirements (e.g., systems with misalignment).
However, it’s important to note that Flexi sleeves are only available for diameters up to 12”. If your application requires larger diameters, rings or other reinforcement options may be more appropriate.
Choosing the Right Solution for Your Facility
Selecting the right BFM® fitting solution—whether it’s integrated rings or a Flexi sleeve—depends on the specifics of your application. Integrated rings and Flexi connectors can offer crucial support for preventing sleeve collapse, accommodating vacuum pressure, and managing movement in a variety of industries.
Need help choosing the right material, size, or fitting? Our BFM® fitting experts are here to guide you through the decision-making process to ensure you get the best solution for your facility’s needs.
