High quality liquid filled gauges designed for durability, accuracy and long life. Pressure ranges from vacuum through 15000 psi. 4" Dial sizes bottom connected; single scale. Heavy one-piece die casting integrates the case, connection, movement. and bourdon tube support into a solid unit to eliminate leakage. Glycerine fill greatly reduces effects of vibration, pulsation and shock. Dials are printed with bold UV resistant ink for ease of readability even after years. of exposure to direct sunlight. Used in demanding applications that are not corrosive to brass, where vibration and pulsation are present. Die cast brass natural brass finish. Coiled safety tube. Brass and Nickel-Silver with highly polished bearing surfaces. Safety relief disc on the top of the case. +/-1 percent Full scale ASME grade A Accuracy. Aluminum, white background with black markings. Glycerine and water fill liquid. Dynamic Pressure: The working pressure should be limited to 60 percent of the dial range for long service life. Static Pressure: The working pressure, where no sharp fluctuations occur, should be limited to 90 percent of the dial range. 0 to 160 degree F Ambient temperature. -4 to 140 degree F Media temperature.