Tip of the day – Young player’s trap fitting actuators to trunnion mounted ball valve from stock

March 24th, 2017 by Amanda Schumann


Trunnion mounted ball valves often have corrosion inhibitor in the sealant injection lines to prevent corrosion during ocean transport or due to humidity etc. The trouble with this is, nowadays they use synthetic oils. Synthetic oils become dry and tacky, and the seat and ball area become dry and tacky/sticky. After the actuator is fitted and function tested, unless you wipe off and remove the residue, this will dramatically increase the torque and increase drag on the valve. Actuated valves often do not have a large safety factor to allow for this.