Sor News

Roy Dunlap invented a mechanical  pressure switch that prevented oil tanks from overflowing and founded SOR Inc. SOR® founder Roy Dunlap leveraged the static-o-ring (SOR) technology to invent a highly accurate mechanical pressure switch that helped prevent the overfilling of oil tanks. This simple but innovative design resulted in a switch of flawless accuracy that would change the oil & gas and power generation industries forever. The static-o-ring pressure switch was developed…

SOR® pressure and level switches are certified for use in IEC 61508 SIL applications. SOR announced today that the company’s line of pressure, differential pressure, temperature, vacuum and level switches have been certified fit for use in SIL (Safety Integrity Level) environments. SOR is one of only a few manufacturers in the industry to offer its entire range of switches certified to IEC 61508 safety standard. To obtain SIL certification, the products were assessed by FM Approvals per the requirements of IEC 61508 Parts 1, 2, and 3. When implementing Safety Instrumented Systems (SIS) in process plant environments such as power plants, offshore oil platforms, refineries and chemical plants, the SIL certification helps mitigate risk at the process instrument level.