Description Warranty Information TW Straight Stem General Use Thermowells: U.S. Gauge recommends the use of a thermowell in conjunction with a bimetallic thermometer when the application involves a corrosive medium, high pressure, or high flow velocity. Some specific uses include protection for unarmoured liquid-in-glass test thermometers or other temperature sensing elements with a maximum diameter of .25". These #20 gauge bimetallic thermowells meet or exceed SAMA specifications and are also available in heavy duty, flange, socket weld, and Van Stone models. Standard thermowells are stepped to 1/2" OD, except for 2-1/2" insertion. Straight shank models are also available. The standard process connection sizes are 1/2"-14 NPT, 3/4"-14 NPT and 1"-11-1/2 NPT, with other sizes available. Materials of construction include 316L stainless steel (standard), 304 stainless steel, and brass (ASTM B-16). A cap and chain for keeping the thermowell bore clean when not in use are available upon request. Specification Sheet This product comes with a 1 year Warranty