SystemStak Flow Control Valves, NFPA-D03 Size

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Specifications
Stacking Height1.57 inches.
Group DescriptionThese valves regulate flow by means of an adjustable orifice which is not pressure compensated, and flow through the valve is entirely dependent upon pressure drop at any particular setting of the orifice. Single and Dual work port models with integral reverse flow checks are available in both meter-our and meter-in styles. Single P port models are available without the reverse flow check.