Parker Hannifin is unveiling a series of valves tested to ISO 15848-1 Class C, a standard that sets out the measurement, test, 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 rate designations, whilst minimising the investment required by the customer. For companies operating in the chemical, petrochemical, or natural gas industries, the reasons for minimising emissions to the atmosphere from industrial valves include environmental targets, government regulations, and plant/worker safety. An independent test house witnessed and certified the full factory tests accordingly.
To achieve ISO 15848-1 Class C certification, a valve must demonstrate less than a certain leak rate over a predefined number of operations (cycles). Furthermore, the valve must remain within this limit while enduring predefined temperature fluctuations. Both Parker Hi-Pro ball valves and H series needle valves met the criteria and now carry certification to ISO 15848-1 Class C. The Hi-Pro ball valve successfully completed a test of 205 cycles at a test temperature of -50°C, achieving a stem sealing system leak rate of 1.2 x 10-6, and a test of 205 cycles at a test temperature of +160°C, achieving a stem sealing system leak rate of 1.0 x10-6. The H series needle valve successfully completed a test of 205 cycles at room temperature, achieving a stem sealing system leak rate of 2.0 x10-6. Both valves were tested using Helium as the test media.
Parker’s Hi-Pro high-performance Class C ball valves offer full cold working pressure ratings up to 414 bar, giving 100% bubble-tight shut-off and continuous repeatable performance. Featuring a true two-piece, quality-assured design, body leakage paths are reduced to a minimum. The same quality, reliability, and value is available from Parker’s H series Class C needle pattern hand valves, which allow precise flow regulation for a wide variety of media in low-flow applications. As standard, the needle valves have metal-to-metal seats to ensure 100% bubble-tight shut-off.
