Blog New pig loading and unloading station Article New pig loading and unloading station By I.S.T. Molchtechnik GmbH on 24.02.2016 Share on Facebook Share on Twitter Share on LinkedIn Share on WhatsApp Share on Telegram Share via Email Share link Check icon Close With the pig loading and unloading station and easy change of the pig is possible. In combination with the piggable ball valve the pig change can be done without any pressure.The change chamber is opened by a lock with safety device, the pig is located through its integrated magnet and the pig sensor at the station. With pig sensors, proximity switches and pressure sensors these single process steps can be controlled by a process control system.