Orion Instruments is one of the leading manufacturers of pressure switches for over 40 years. We are an ISO 9001:2015 certified company manufacturing “Orion Instruments” Brand pressure, pressure difference, vacuum and flameproof pressure switches from Vacuum to 600 bar since 1977. Our products are available with 'CE' certification & our Flameproof Pressure switches have been approved by a leading European Lab – “BASEEFA” for ATEX & IECEx certificates, and PESO by CCOE