We have been facing serious problems in two areas of our plant. One is in liquid HCL isolating valves, we have more than 50 valves on dry HCL service at very low temperature but every now and then, we face gland leakage issue. Second, in valves afetr furnace where at pressure around 25 bar and temp of 100 deg C, HCL, VCL, EDC is there where we would need class 6 isolating valve. Currently we have butterfly valves but afetr some time, valve doesnot islate the system mainly due to carbon deposition on seats. Need urgent help.

For gland leakage, you could try "live loaded packing configuration" that can compansate (within reason) on wear & thermal expansion/contraction issues). Important that you are using the correct packing materials...
What type of valves are you using ?

Forgot to mention butterfly valve manufacturers...Try: Tyco flow control(Vanessa valves), Cameron group (formerly CCV) (Orton), Tomoe valves. These are but three of them, the first two practically every working condition experience, as they have been around the longest.

MORE NEWS