FLH-25 Buckeye Fusible Link Hanger (25 Pack)

The Buckeye FLH-25 Fusible Link Hanger is the detection hardware for the Buckeye Kitchen Mister (BFR series) wet chemical suppression system. Sold in a 25-pack, the FLH-25 supports a continuous 1/16" stainless steel cable run through each fusible link position, rather than requiring individual crimped terminations at each detector point. By reducing the total number of mechanical connections in the detection line, the continuous method minimizes friction losses and potential slip points -- ensuring the full spring tension from the Universal Control Head is available to actuate the system the moment a fusible link separates.

Continuous Line vs. Crimped Loop Method

Every crimped loop in a detection line is a potential friction and slippage point. The FLH-25's continuous cable design cuts the number of mechanical connections roughly in half compared to a fully crimped link-to-link run, creating a simpler and more reliable chain of force transfer from the fusible link to the Universal Control Head.

The 4-Inch Slack Mandate

The Buckeye Kitchen Mister specification requires approximately 4 inches of cable slack at each FLH-25 junction. When a link separates, this slack allows the cable to move freely toward the control head. Without adequate play, the cable could remain under partial residual tension and delay or prevent full system actuation.

Thermal Alignment

The hanger is engineered to center the fusible link within the highest-velocity heat zone of the exhaust hood, ensuring the link reaches its yield temperature at the precise moment a fire plume develops over the protected appliance.

Grease-Clog Audit (Semi-Annual)

Aerosolized grease can bake onto the hanger body and effectively weld the cable in place. During every semi-annual inspection, verify that the cable slides freely through the FLH-25. Any hanger showing internal carbonized grease buildup must be replaced to prevent binding during actuation.

Slack Verification

Manually verify approximately 4 inches of cable slack at every link hanger point. Cable that is too tight may prevent the control head from tripping; cable that is too loose may not provide enough travel for the Universal Control Head to fully actuate the discharge mechanism.

Corrosion Inspection

Caustic cleaning chemicals can pit the plated steel body over time. Any hanger showing structural corrosion or pitting must be discarded. Corroded hangers can abrade the wire rope, weakening strands and increasing the risk of premature or failed actuation.

Alignment Verification

Verify at each inspection that the FLH-25 remains centered directly over the protected appliance as specified in the Buckeye technical manual. A hanger knocked out of alignment leaves a shadow zone and delays the thermal response.

Can these hangers be used without a standard mounting bracket?

Yes. The FLH-25 can be used with the standard FLB-1 bracket or attached directly to the hood surface as a standalone holder. The primary requirement is that the fusible link remains centered over the protected hazard at the correct mounting height.

Why is the continuous line method preferred over individual crimped loops?

Every crimped loop is a potential slippage and friction point. The continuous cable method supported by the FLH-25 reduces the total number of mechanical connections by roughly half, producing a simpler and more reliable chain of force transfer from the fusible link to the Universal Control Head.

Is this hanger compatible with other fusible link styles?

While listed specifically for Buckeye Kitchen Mister systems, the FLH-25 dimensions accommodate standard Globe-style links. For UL 300 compliance, always use the hardware specified in the system's as-built drawings -- substituting unlisted components voids the system's safety listing.