Industrial refrigeration technicians face a four-horned challenge when it comes to control valves. First, traditional beefed-up industrial valves are big. And the darn things can be downright heavy since they are typically made of cast iron.
Then, the way they are put together - with flanged connections and a service port on the bottom - results in a leak potential that anybody would avoid if they could. And just like every other sector of HVACR, industrial refrigeration has a refrigerant situation that is constantly in a state of flux.