Electronic Flowmeter, Product Type BTU System Meter, Flowmeter Type Paddlewheel, Accuracy +/-2 Percent, Connection Size 2 in, Connection Type NPT, Compatible Flow Material Water, Media Temperature - Maximum 126.7 Degrees F, Media Temperature - Minimum - 6.7 Degrees F, Viscosity - Maximum 32.6 SUS, Voltage - Maximum 28V DC; 35V AC, Housing Material Polycarbonate, Rotor Material Stainless Steel, O-Ring Material EPDM, Seal Material EPDM, Shaft Material Tungsten Carbide, Wetted Material Brass, PEEK