Valve interlocking equipment provider Smith Flow Control has developed a new interlock for use with diaphragm valves.
The company has claimed that the new technology resolves problems associated with locking off diaphragm sampling valves in the food and drinks industries: the small valves, used to control the flow of high-purity water in closed loop systems, are usually located in wash-down areas and due to their size are unsuitable for use with conventional stainless steel interlocks.
Smith Flow Control added: “The new interlock uses a simple, rotational Ellis lock mechanism that is ideal for this application due to its compact design. It has an acetal plastic body, which is lightweight and well suited for use with small diaphragm valves. It is also highly resistant to moisture, solvents and many other neutral chemicals. Despite this, it is tough, hardwearing and has a high resistance to repeated impacts. The Ellis key has a spring-loaded rubber seal, preventing water ingress during wash-down or sterilisation procedures.”
Dan Kelly, the company’s North American general manager, said: “Smith Flow Control is renowned for its heavy duty mechanical interlocks for the oil and gas industries, but this new lock design demonstrates our ability to provide interlocks for specialist applications, such as small diaphragm locks.”
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