The 2440 Series Back-Pressure Regulator is designed for applications requiring high-accuracy, precision pressure control. Regulator offers backpressure control in pressures up to 250 PSI. All stainless steel construction, including the diaphragm, along with a broad selection of seal materials, make this design suitable for a wide range of gas and liquid applications. Standard connections are 1/4" and 3/8" NPT or tube per MS 33649. Temperature range is -40 to +180°F. U.S. ParaPlate Corp. 2301 Wardlow Rd. Corona, CA, 92880-2894