Safety valves for steam and air
October 2010
Valves, Actuators & Pump Control
The SV7 safety valve range from Spirax Sarco protects against overpressure in a broad spectrum of industrial processes.
The valves are available in a wide range of inlet sizes and body materials and are suitable for use on both steam and air applications.
The SV73 and SV74 safety valves are built in conformance to Section I and VIII of the ASME boiler and pressure vessel code. The SV73 is made of cast iron and the SV74 from carbon steel. Both have stainless steel trim and are primarily intended for use on power boilers and unfired pressure vessels where ASME Section I and VIII stamped valves are required.
The SV7 range has a large capacity achieved at a small overpressure tolerance and as such the valve can allow higher working pressures and therefore higher capacities. The small blowdown characteristic allows higher working pressures and also helps to minimise steam losses. Each Spirax Sarco safety valve is tested to ensure that the integrity of shut-off complies to the oil and petrochemical industry standard, as set out by the American Petrochemical Institute, API 527. The SV74 valves have full compliance with API 526.
For more information contact Emily Heath, Spirax Sarco, +27 (0)11 230 1300, , [email protected], www.spiraxsarco.com/za
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