Seafood is a staple in nearly every Chilean's diet. Shellfish such as loco (abalone), erizo (sea urchin) and piure (an unusual red invertebrate) join more widely known fish, including sardines, salmon, congrio (conger eel) and atÃºn (yellowfin tuna).
To work efficiently, pipes need a way of regulating how much fluid can pass through them; they also need a way of switching the flow off completely. That's the job that valves do: valves are like mechanical switches that can turn pipes on and off or raise or lower the amount of fluid flowing through them.
Valves are used to develop a pressure differential (throttle valves), to prevent the reverse flow of a fluid (check valves), to release a certain amount of gas, vapor, or liquid when the pressure exceeds a set value (safety valves), to control pressure or flow rate (regulating valves), and to reduce pressure and keep it at a constant level (reducing valves).