High Performance Protectus III (S) Meter The HP PROTECTUS III S (Stainless Steel) Fire Service Meter measures extremely wide flow ranges at 100% 1.5% accuracy. All HP Fire Service Meters meet or exceed AWWA C703 Standard, are NSF/ANSI 61 Certified, and Underwriters Laboratory (UL) Listed and Factory Manual (FM) Approved for fire service use.
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