Water Gauge, Body Material Stainless Steel, Gauge Glass Diameter 5/8 in, Gauge Glass Length 12 in, Center to Center Length 14 in, Media Temperature - Maximum 450 Degrees F, Gasket Material PTFE with Hypalon, Connection Type NPT, Compatible Pipe Size 1/2 in, Number of Guard Rods 4, Valve Type Ball Drain, Operating Pressure - Maximum 500 psig, Stem Packing Material PTFE with ARAMID, Standards CRN Registered