Self-made solutions for valve position indicators are often used to determine the open /closed position of a manual multi rotation valve. What are the main problems that customers experience with these types of valve position indicators and what product characteristics would end users in the industry actually prefer?
Netherlocks is a premium supplier of industrial valve safety solutions such as valve interlocks, valve position indicators, partial stroke testing devices and portable valve actuators. Our greatest strength is in providing simple and reliable custom-made solutions.
As part of an overhaul operation of one of its plants, Dutch based Shin-Etsu PVC, part of Shin-Etsu Chemical Ltd., recently replaced all refrigeration compressors using Freon with compressors using propylene in their Botlek plant. The Pressure Safety Valves (PSV’s) on these compressors were safeguarded by lockout-tagout systems. Michel Immerzeel, Team Leader Mechanical at Shin-Etsu PVC, explains why the new compressors are to be equipped with valve interlocks instead.
Mechanical interlocking products guarantee strict adherence to procedure and thus avoid human error. They are particularly useful for operations that are generally recognized as highly dangerous, such as pigging. Interlocks are a cost-effective measure that results in extremely high safety levels.
Valve safety products such as valve interlocking devices have to withstand harsh conditions for long periods of time. Therefore, stringent requirements are imposed on this kind of equipment. Which materials can be best used and which design principles have to be taken into account?
Netherlocks has received new EX certification for the Netherlocks FAITH partial stroke testing system, recognising the addition of a dedicated grounding means for the system.