Parker ball and needle valves with ISO 15848-1 class C • AT-Drive technology

Parker Receives ISO 15848-1 Class C Low Emissions Certification for Industrial Ball and Needle Valves (Photo: Parker)

Parker Hannifin unveils a range of valves tested to ISO 15848-1 Class C, a standard that describes measurement, testing and qualification procedures for fugitive emissions from industrial valves. The Class C valves complement Parker’s existing solutions for the more stringent Class A and B leak rates while minimizing the required customer investment.

For companies operating in the chemical, petrochemical, or natural gas industries, environmental goals, regulatory requirements, and worker or plant safety are among the reasons to minimize emissions from industrial valves to the atmosphere.

ISO 15848-1 Class C certification

To achieve ISO 15848-1 Class C certification, a valve must exhibit less than a specified leakage rate during a predefined number of operations (cycles). In addition, the valve must remain within this limit while tolerating predefined temperature variations. Both Parker Hi-Pro ball valves and H-series needle valves met the criteria and are now ISO 15848-1 Class C certified. The Hi-Pro ball valve has successfully passed a 205 cycle test at a test temperature of -50°C, achieving a stem seal system leakage rate of 1.2 x 10-6 and at a test temperature of +160°C. 205 cycle test achieving a stem seal system leakage rate of 1.0 x10-6. The H series needle valve has successfully completed a 205 cycle test at room temperature, achieving a stem seal system leakage rate of 2.0 x 10-6. Both valves were tested with helium as test medium.

Hi-Pro ball valves

Parker’s high performance Class C Hi-Pro ball valves provide fully rated operating pressures up to 414 bar at low temperatures, for 100% bubble-tight shut-off and consistently repeatable performance. Leakage paths in the housing are kept to a minimum due to the two-part design, where quality is guaranteed.

Needle cartridge hand valves

Parker’s H Series needle cartridge hand valves offer the same quality, reliability and value. This enables precise flow control in low flow applications for many media. The needle valves are equipped with metal-to-metal seats as standard to ensure a 100% bubble-tight seal.

Assembly technology

Both valve series feature fully integrated pipe connections that take advantage of the many advantages of Parker’s proprietary A-LOK mounting technology (with two connectors) or CPI mounting technology (with one connection). This important engineering feature not only allows for quick installation, but also eliminates the need for taper threads and thread sealant, eliminating the risk of an external leak path. This can further reduce the total emissions from factories.

Packaging design

Another technical feature of the valves that supports ISO 15848-1 Class C accreditation is the robust packing design around the stem. The stem in industrial valves is a moving part, so a tight surrounding sealing concept is essential to prevent leaks during movement and to withstand the number of cycles and temperature variations described in the ISO 15848-1 Class C standard.

With this development, process plants, system integrators and natural gas distributors can use the ISO 15848-1 Class C certified ball and needle valves that minimize emissions and improve safety.

Also interesting: New solution from Parker Hannifin for automating hydraulic processes

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