Profile: Ernst Flow Industries deals with processing and industrial plant equipment. Our products include liquid level gauges, pressure gauges, ball valves, industrial thermometers, boiler parts and washers. Our 1900 1/2" NPT carbon steel needle shut-off valve has features such as reinforced Teflon® packing and 250 PSI saturated steam. It is available in 1/4, 3/8, 1/2, 3/4 or 1 inch. Our 80-G-607 aluminum flush mounting shielded gauge is suitable for operating pressures up to 270 PSI, and a maximum temperature of 150°F. It is furnished with redline gauge glass for easy indication of liquid level.