Single Wall Sight Flow Indicator Body Material Polypropylene Number of Walls Single Connection Type Pipe Threads Connection Thread Size 3 in Thread Gender Female Thread Type NPT Pipe Size 3 in Maximum Operating Pressure 115 psi Maximum Operating Temperature 180 Degrees F Minimum Operating Temperature 40 Degrees F Mounting Orientation Horizontal Vertical Overall Length 8.4 in Window Material Acrylic Seal Material Viton Flow Direction Any Direction Standards Not Applicable