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Weighing Bellows
Weighing Bellows
The BFM® Weighing Bellows is a patented product made from a clear ether-based thermoplastic polyurethane alloy. It is designed to prevent vibration transmission between equipment, which can affect downstream weighing or scales. The material is highly durable and resistant to tearing during installation or operation, unlike silicone alternatives. Installation and operation require no tools, avoiding common issues with other bellows where tools can damage the connector or fall into equipment.
- Spigot and blue-band connector fitting system ensures consistent height, eliminating manual adjustments for weighing accuracy.
- Surface Finish: Gloss/Gloss
- Hardness: Shore A 90
- Wall Thickness: 0.9 mm (1/32 inch) for base sections, 0.35 mm (1/64 inch) for formed profile
- Operating Temperature Range: -25 to 80˚C (-13 to 176˚F)
- Max. Surge Temperature: 100˚C (212˚F)
- Low Temperature Flexibility: Good
- Surface Resistivity: 1010 ohms
- Air Permeability: 0
- Diameter: Ø100mm (4”), Ø150mm (6”), Ø200mm (8”)
- Length: 80mm (3 5/32”)
The product is Atex Compliant, tested by IBExU, and suitable for use in dust explosion hazardous areas with restrictions. It complies with FDA 21 CFR 177.1680 & 177.2600, USDA, (EC) 1935/2004, 2023–2006 & 10/2011 regulations. It is manufactured from 3A 20-27 certified Seeflex Material, and the BFM® cuff and spigot system is a 3A certified 63-04 sanitary fitting.
Spigots for the Weighing Bellows must be welded exactly 80mm (3 5/32”) apart to ensure optimum performance and accuracy.
Catalog excerpts
| PRODUCT SPEC SHEET Weighing Bellows PHYSICAL PROPERTIES: • The patented BFM® Weighing Bellows is made from our clear ether-based thermoplastic polyurethane alloy. • The shape of the Weighing Bellows is ideal for preventing vibration transmission between equipment, minimising any transfer that can affect weighing or scales downstream. Base Sections Formed Profile Surface Resistivity (0hms) (Tested to ASTM D-257) • Spigot and blue-band connector fitting system ensure exact height every time, eliminating manual adjustments to maintain weighing accuracy. Operating Temp Range • No tools are required for installation or operating - this prevents common issues experienced with other weighing bellows where operators use screwdrivers or clamps which can cut the connector or fall into the downstream equipment. • Highly durable material that will not tear during installation or operation unlike the silicone counterpart. Surface Finish AVAILABLE SIZES: COMPLIANCE: Atex Compliant: IBExU tested. Can be used in all dust explosion hazardous areas (restrictions apply). Complies with the following regulations: FDA 21 CFR 177.1680 & 177.2600, USDA, (EC) 1935/2004, 2023–2006 & 10/2011. Manufactured from 3A 20-27 certified Seeflex Material and the BFM® cuff and spigot system is a 3A certified 63-04 sanitary fitting. NOTE: Spigots for the Weighing Bellows must be welded exactly 80mm (3 5/32”) apart to ensure optimum performance and accuracy. BFM® GLOBAL LTD. | E: [email protected] | WEB: BFMfitting.com V3 FEB 2024
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