English to Greek Tech/Engineering Engineering: Industrial power plant description

quote
One auxiliary boiler pressure reducing skid which includes
• electrical heater
• manual isolating ball valve upstream reduction line
• manual isolating ball valve downstream reduction line
• monitor self-actuated regulating valves with position transmitter (with integrated shut-off valve complete of open/close end switches)
• main self-actuated regulating valve with position transmitter
• safety valve
• all necessary instrumentation
• all necessary interconnecting piping
etc..
unquote