I am afraid something is either being degraded to cause the gummy precipitate to form around the valves or there exists impurities in your acid. I would maybe introduce a recirculating line on a closed loop just to keep the fluid from precipitating and or reacting with fitting parts because of being left idle for long periods of time.
Published by Robert Maina, Facility Engineer at Human Needs Project
I am afraid something is either being degraded to cause the gummy precipitate to form around the valves or there exists impurities in your acid. I would maybe introduce a recirculating line on a closed loop just to keep the fluid from precipitating and or reacting with fitting parts because of being left idle for long periods of time.