Abstract: A cutting nozzle assembly and associated method of making same includes a nozzle having a central bore extending therethrough along a longitudinal axis through which an associated cutting gas is discharged. A plurality of spaced fuel gas bores are arranged around the central bore, and preheat passages are arranged around both the central bore and the fuel gas bores. A retaining nut receives at least a portion of the nozzle therein, and the retaining nut includes a shroud extending axially outward from a discharge end of the nozzle. At least one of an inner surface of the shroud and the additional preheat passages are angled inwardly toward the longitudinal axis. The fuel gas bores and the preheat passages each have the same cross-sectional dimension, and twice the number of preheat passages as fuel gas bores are provided.

Abstract: A gas flowmeter and associated method of forming a glass flowmeter includes a body having a passage that communicates with an inlet and an outlet for receiving gas flow therethrough. A selectively variable valve controls a flow of gas to the outlet, and plural calibrated scales are operatively associated with the passage to represent a flow rate of gas through the passage. First and second floats having different material properties are received in the passage and are viewable in operative association with the calibrated scales.

Abstract: A cutting nozzle assembly and associated method of making same includes a nozzle having a central bore extending therethrough along a longitudinal axis through which an associated cutting gas is discharged. A plurality of spaced fuel gas bores are arranged around the central bore, and preheat passages are arranged around both the central bore and the fuel gas bores. A retaining nut receives at least a portion of the nozzle therein, and the retaining nut includes a shroud extending axially outward from a discharge end of the nozzle. At least one of an inner surface of the shroud and the additional preheat passages are angled inwardly toward the longitudinal axis. The fuel gas bores and the preheat passages each have the same cross-sectional dimension, and twice the number of preheat passages as fuel gas bores are provided.

Abstract: A gas flowmeter and associated method of forming a glass flowmeter includes a body having a passage that communicates with an inlet and an outlet for receiving gas flow therethrough. A selectively variable valve controls a flow of gas to the outlet, and plural calibrated scales are operatively associated with the passage to represent a flow rate of gas through the passage. First and second floats having different material properties are received in the passage and are viewable in operative association with the calibrated scales.