MB-15 Cylinder Mounting Bracket - 550054

The Ansul MB-15 Cylinder Mounting Bracket (Part No. 55054) is a heavy-duty structural anchoring component engineered for the secure vertical mounting of agent cylinders in R-102, PIRANHA, and industrial systems. While often overlooked, the bracket serves as the literal foundation of a system's mechanical integrity. It is designed to withstand both the consistent static load of a fully charged 4.6-gallon cylinder and the violent recoil force dissipation generated during an emergency discharge.

The MB-15 is a non-negotiable requirement for code-compliant installations. If a cylinder shifts during actuation, the kinetic energy can shear discharge piping or kink actuation hoses. By utilizing this high-tension clamping mechanism, technicians ensure that the cylinder remains immobilized and in perfect axial alignment. The heavy-gauge steel construction prevents structural creep over a 12-year service life, while the industrial-grade powder coat protects against fretting corrosion in humid, grease-laden environments.

The MB-15 must be installed by a certified fire suppression technician in accordance with the Ansul R-102 or PIRANHA system design manual and NFPA 17A. The bracket must be mounted to a structurally sound surface capable of supporting the combined weight of the bracket, cylinder, and agent under dynamic discharge conditions. Lag screws into wall studs or through-bolts into concrete are the required fastening methods; standard drywall anchors are not rated for the recoil forces generated during discharge.

The integrated high-tension clamping system must be tightened firmly around the cylinder shell to prevent vibration-induced shifting in high-traffic kitchen or industrial environments. The bracket must be verified as perfectly plumb during installation; any tilt places side-load stress on the discharge valve and actuation hose connections. During each semi-annual inspection, technicians should check the bracket for signs of fretting corrosion or mounting hardware loosening, and verify the cylinder remains securely clamped.

Can I use the MB-15 for a 6.0-gallon cylinder?

No. The MB-15 is sized specifically for mid-range PCL cylinders up to 4.6 gallons. For the larger 6.0-gallon (PCL-600) tanks, you must use the MB-G bracket to accommodate the increased diameter and weight while maintaining the necessary static load endurance.

Is this bracket compatible with Pyro-Chem cylinders?

Yes. As both brands are part of the Johnson Controls portfolio, the MB-15 is a cross-compatible OEM part for Pyro-Chem agent tanks, provided the cylinder sizes match the listed 15 lb, 17 lb, or 25 lb industrial capacities.

Does the bracket include the cylinder clamping straps?

Yes. The MB-15 features an integrated high-tension clamping system designed to wrap around the cylinder shell. This ensures a vibration-resistant fit that prevents the jumping often seen during high-pressure discharges.