Ansul / Pyro-Chem Scissor Style Detector Hook Assembly (SS) (Single Item) - 435545
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Wholesale PricingThe Ansul / Pyro-Chem Scissor Style Detector Hook Assembly (P/N 435545) is the detector linkage that holds a fusible link in place at each detection point in a kitchen fire suppression system, mounted within a duct or header opening above protected cooking appliances. The detection cable runs through a series of these hook assemblies on its way back to the release mechanism, and the fusible link bridges each hook, holding the cable under tension at that point. When heat at that location reaches the fusible link's rated temperature, the link separates, the hook assembly releases, and tension relaxes throughout the cable run, tripping the release mechanism's trip lever.
This single-item listing is for one scissor-style hook assembly, sold individually to replace a hook at a specific detector bracket location rather than to outfit an entire system. The fusible link itself must be installed with the hook assembly positioned correctly toward the terminal detector side of the bracket, a detail Ansul's own installation documentation calls out specifically since incorrect positioning can affect how reliably the link separates and releases tension.
| Feature | Details |
|---|---|
| Manufacturer | Ansul / Pyro-Chem |
| Part Number | 435545 |
| Component Type | Scissor Style Detector Hook Assembly (Single Item) |
| System Compatibility | Ansul R-102 and Pyro-Chem Kitchen Fire Suppression Detection Systems |
| Function | Supports Fusible Link at Detector Bracket and Releases Cable Tension on Separation |
| Mounting Location | Detector Bracket within Duct or Header Opening |
Kitchen suppression systems are pre-engineered systems under NFPA 17A, and replacing a detector hook assembly must be performed by a certified system distributor along with reinstallation of a properly rated fusible link.
- Semiannual Professional Service: A qualified technician inspects every detector hook assembly and fusible link in the system at each required service interval, checking for correct positioning, secure mounting, and proper fusible link rating for the protected appliance's temperature exposure.
- Mandatory Fusible Link Replacement: The fusible link supported by this hook assembly must be replaced, not just inspected, at every semiannual service interval, since links that appear undamaged may have accumulated thermal stress that alters their rated separation temperature.
- Correct Positioning Required: The hook assembly with the fusible link in place must be located toward the terminal detector side of its bracket, per Ansul installation specifications, to ensure reliable release tension behavior.
Does this come with a fusible link included?
This listing is for the hook assembly itself, sold as a single item. The properly rated fusible link for the protected appliance's temperature exposure is a separate component and must be selected and installed by your certified distributor based on the specific location's heat profile.
How many of these does a typical kitchen system use?
The number varies by system design, since a detector hook assembly is needed at each protected appliance location along the hood and duct. Your system's design documentation from your certified distributor specifies the exact quantity and locations required for your kitchen layout.
Can I replace just one hook assembly myself if I know which one failed?
No. Even a single detector hook assembly is part of a certified, pre-engineered fire suppression system, and incorrect installation or fusible link selection can compromise the entire detection network's reliability. Replacement must be performed by a certified distributor.
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