17-09-2014, 07:45 PM
Hello,we are currently using grove B-5 and B-4C valves in our plant. These valves are only turned once every two or three years for turn arounds unless in emergency.We recently had a primary seal leak shortly after using one valve,i would like to know the manufacturers recomendation for maintenance and the frequency.The product in use is ethelene.Thank you Murray Neufeld