New: acuatorAll contenthive-129948hive-196917krzzanhive-183959hive-180932steemphotographyhive-185836uncommonlabhive-144064hive-166405bitcoinhive-145157hive-150122krsuccesshive-188619hive-109690hive-139150hive-101145hive-183397lifehive-184714hive-124908cryptoTrendingNewHotLikerspbarati (25)in butterfly • 7 years agoButterfly valve operation with with pneumatic actuatorThe "purple gas" pumped in is just compressed air (only purple for visual purposes) that will make the pistons move and the valve to open and close.