Pressure regulators are used for accurate control of pressure at all important points in a sample system. Three regulators are available for maximum inlet pressures of 28 barg (410psig), 238 barg (3500psig) and 415 barg (6000psig). Where a large pressure drop is required it is recommended that this be achieved using a primary high pressure regulator in series with a secondary low pressure regulator, to obtain two stage reduction. Options include various sized inlet and outlet fittings. Other regulators, with intermediate pressure ratings or with electrical heating, are also available.