Blow-down Valve Flow Coefficient Testing

Mechanical Engineering

Blow-down valves are playing a vital role in modern manufacturing process industries around the world. Properly selected Blow-down valves increases the efficiency, safety, profitability and ecology. The most common final Blow down element in the process Blow down industries is the Blow-down valves. Blow-down valves coefficient describes the relation between flow passage and pressure drop across valve (Flow Capacity). Blow-down valves flow test rig was designed in order to calculate practically the flow coefficient (Kv) by standards ANSI/ISA-75.02-1996 and ANSI/ISA-75.01-2002. This flow test rig used to verify the designed Kv. It was necessary to the Kv equation for incomprehensible fluids to proceed with flow sensor selection. It is also described the electronic instrumentation for measuring flow, temperature and pressure difference. This work describes the operation of flow test rig, to determine Kv of Blow-down valves with incomprehensible fluid under the regulations was established by standards. The results obtained are much encouraging and the accuracy of Blow-down valves coefficient is ±1%.

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