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Contractor-focused guide to fire protection butterfly valves, including wafer, grooved, and lug styles, UL/FM approval, tamper switches, pressure ratings, and selection tips.
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UL Listed and FM Approved are two separate third-party product approval systems commonly referenced in fire protection specifications. UL focuses on safety testing and listing, while FM Approvals focuses on property-loss prevention and performance requirements used by many insurers, engineers, and fire protection specifications.
For contractors, the important point is simple: do not assume one mark replaces the other. Check the project specification, submittal requirements, model number, size, and current certification documents before ordering fire protection valves.
Need UL/FM fire protection valves in stock? Unimech Flow stocks Arita Fire Solutions valves in Houston and can help with submittals, contractor pricing, and nationwide shipping.