MB-1 Cylinder Mounting Bracket - 550053

The MB-1 (P/N 550053) is a standard mounting bracket for smaller ANSUL agent cylinders used in R-102 and Piranha kitchen fire suppression systems. The bracket provides stable, compliant wall or enclosure mounting that keeps the agent cylinder in the correct position per the ANSUL R-102 and Piranha system design documentation — maintaining the actuation tubing routing geometry and ensuring the cylinder is secure and accessible for semi-annual service inspections. The MB-1 is one of the most commonly used cylinder mounting hardware items across ANSUL R-102 and Piranha installations.

In commercial kitchen fire suppression system installations, proper cylinder mounting is both a code requirement and a reliability factor. A cylinder that is improperly secured can shift position over time — altering the actuation tubing routing, stressing fittings, and potentially changing the system's hydraulic performance characteristics. NFPA 96 and NFPA 17A require that cylinders be mounted per the manufacturer's installation documentation, and the MB-1 bracket provides the OEM-specified mounting solution for smaller ANSUL agent cylinders in R-102 and Piranha configurations. The bracket must be anchored to structural substrate capable of supporting the gross weight of the fully charged cylinder.

Available through authorized ansul distributors as part of the ANSUL fire suppression system hardware catalog. Install per the ANSUL R-102 or Piranha system design drawings and the ansul fire suppression system installation documentation. Inspect the MB-1 bracket at every semi-annual NFPA 17A and NFPA 96 service visit — verify the bracket is secure, shows no corrosion compromising structural integrity, and the cylinder retention strap is tight. A loose or corroded bracket is an inspection deficiency. Document in the fire suppression system inspection record.

Install the MB-1 bracket per the ANSUL R-102 or Piranha system design drawings. Anchor to structural wall substrate or enclosure framing — verify the mounting substrate is rated for the gross weight of the fully charged cylinder. Position the cylinder per the system documentation to maintain correct actuation tubing routing geometry. Tighten the cylinder retention strap securely. At every semi-annual NFPA 17A and NFPA 96 service visit, verify the bracket fasteners are tight, the bracket shows no corrosion or deformation, and the cylinder is secured in the correct position per the system as-built drawings. Document in the fire suppression system inspection record.

What cylinder sizes does the MB-1 support?

The MB-1 is rated for smaller ANSUL agent cylinders in R-102 and Piranha configurations. Verify the specific cylinder dimensions and weight that the MB-1 supports using the ANSUL R-102 or Piranha system documentation. Larger cylinder sizes — such as the 3-gallon (429878 bracket) and dual-cylinder configurations (429872 enclosure) — use different mounting hardware. Always match the bracket to the specific cylinder model using the ANSUL parts documentation.

Can the MB-1 be used with non-ANSUL cylinders?

The MB-1 is designed for ANSUL R-102 and Piranha agent cylinder dimensions. While it may physically fit similar-sized cylinders from other manufacturers, the MB-1's UL listing applies to ANSUL system configurations only. For Range Guard, Pyro-Chem, or other brand cylinders, use the bracket hardware specified in those systems' installation documentation.