Mechanical Flowmeter, Product Type High Temperature Flow Meter, Flowmeter Type Variable Area, Accuracy +/-7 Percent, Connection Size 1/4 in, Connection Type NPTF, Compatible Flow Material Petroleum Fluids, Media Temperature - Maximum 400 Degrees F, Media Temperature - Minimum -20 Degrees F, Viscosity - Maximum 500 SUS, Voltage - Maximum Not Applicable, Housing Material Aluminum, Rotor Material Not Applicable, O-Ring Material Viton, Seal Material Viton, Shaft Material Not Applicable