Centrifugal Pump Triple Duty Valve; Item Valve; Type Straight, Triple Duty; Applicable Standard ASHRAE 90.1; Size 2-1/2" Flanged; Material Cast Iron Body, Bronze Seat; Used On Item Centrifugal Pump; Used On Model/Brand 3DS-2-1/2S; Flow Rate 390 GPM; Maximum Working Pressure 175 PSIG; Maximum Operating Temperature 250 Deg F; Overall Dimension 8-7/8" Length x 11" Height (Open), 10-1/4" Height (Closed); Disc Material Brass; Stem/Spring Material Stainless Steel; Seal Material Asbestos-Free Gasket, Non-Stick-Graphite Packing