Process / Problem:
To stop the escape of chlorine gas from isolation and filling valves at the automated filling station plant that provides liquid chlorine for the safe cleaning of city, town and village drinking water across the country. To ensure that new products lasted more than 6 months, before corrosion induced gas leaks which had become the norm.
Solution:
Replaced existing products with Hunt & Mitton 8800/01, 8850/51 bellows sealed valves fitted with high resistance material options and Euro chlor approved valve design. The majority of these valves have now been in operation for more than four years without leakage across the seat or outside of the pressure envelope. This has greatly improved the safety of the plant operators and stopped the leakage of chlorine gas into the environment.
Benefits:
Three benefits have been confirmed by the end user. First, the prevention of gaseous chlorine from escaping from the valve has improved the safety levels for the operators work in the filling station. Secondly, the plant process continues to run 24/7 giving improvements to the operating costs of the cylinders. Thirdly, there has been a significant decrease in replacement costs of the old, unsuitable designs of valves which often required replacements within 6 months.
