New smart solenoid valve for PST

The IMI Maxseal ICO4-PST Smart Solenoid valve integrates the termination housing of the positioner solution with the control mechanism of the electronic system

January, 2016

Aimed at providing a no-compromise solution for partial stroke testing (PST), IMI Precision Engineering has created the first smart solenoid valve which fully integrates the two main types of intelligent PST systems – positioners and electronic systems.

PST has long been used within the oil and gas industry to prove the functionality of final element assemblies for safety systems, allowing operators to demonstrate the performance levels of emergency shutdown valves. However, both of the primary methods of PST have certain drawbacks which led IMI Precision Engineering, a world leader in fluid and motion control, to investigate an alternative solution which would combine the strengths and eliminate the weaknesses of both, while providing high-level diagnostics with position, time and pressure monitoring.

The IMI Maxseal ICO4-PST Smart Solenoid valve is the first of its kind to integrate the termination housing of the positioner solution with the control mechanism of the electronic system, creating a high-integrity solenoid valve with the lowest safe and dangerous failure rates of any intelligent PST on the market. Its dual-override mechanism eliminates the possibility of over-stroke while the high flow rate (Cv up to 6.0) reduces the requirement for quick exhaust valves, pilot valves and boosters. This simplicity of engineering makes it ideal for retrofit applications, while the flexibility of the ICO4-PST Smart Solenoid valve means it can be easily configured for specific environmental and application requirements.

Compatible with valve speeds from 2 to 120 seconds, ICO4-PST is also capable of operating across a wide temperature range of -40°C to +60°C and can be designed to 1oo1, 1oo2, 2oo2 or 2oo3 solenoid configurations.

Richard Harvey, business development manager at IMI Precision Engineering, explained: “With more than 80 years of experience in designing safe, reliable and durable solutions for demanding oil and gas applications worldwide, we are acutely aware of the challenges faced by operators and the ICO4-PST Smart Solenoid valve is the latest example of our ability to engineer great solutions. ICO4-PST is customisable for a variety of applications as it is compatible with ball, butterfly, gate, globe and HIPPS valves, and is also attuned to a wide range of actuator types including pneumatic, spring return and quarter turn.”

Norgren became IMI Precision Engineering in 2015, a brand which consists of a portfolio of flagship product brands including IMI Norgren, IMI Buschjost, IMI FAS, IMI Herion and IMI Maxseal.

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