Instrumentation Valves - ICON

Instrumentation valves provide precise fluid control for measurement, sampling, and process control systems. Shop instrumentation solenoid valves for automated on/off switching in control loops, needle valves for fine flow adjustment in analyzer and transmitter installations, proportioning valves for electronically modulated flow control, and air-actuated valves for remote operation in process environments. Built-in materials like 316 stainless steel, brass, and PTFE, these small-bore instrumentation valves are designed for tight spaces, high pressures, and compatibility with gases, liquids, steam, and corrosive media. Browse our full selection of instrumentation valves below to find the right fit for your application, or contact Centro for sizing and selection assistance.


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The Truflo BRP Series Back Pressure Relief Valve has two functions. As a back pressure valve installed in-line downstream of a pump. In this position the back pressure below the metering pump is maintained. When the BRP Valve is installed in the branch of a tee fitting it functions as a pressure relief valve. The valve remains closed until inlet pressure reaches the preset pressure which is adjusted by turning the spring tension bolt. The pressure as the inlet of the valve acts upward against the piston allowing the liquid under higher pressure to flow upwards through the orifice.
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The Truflo BRP Series Back Pressure Relief Valve has two functions. As a back pressure valve installed in-line downstream of a pump. In this position the back pressure below the metering pump is maintained. When the BRP Valve is installed in the branch of a tee fitting it functions as a pressure relief valve. The valve remains closed until inlet pressure reaches the preset pressure which is adjusted by turning the spring tension bolt. The pressure as the inlet of the valve acts upward against the piston allowing the liquid under higher pressure to flow upwards through the orifice.
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