Lockable 4” Inspection Point Retro Fit

This inspection cap is a locking retrofit cap which can be fitted to the 4" inspection point on all bunded oil tanks. Generally, this cap is used to replace either the black 1/4 turn locking cap or the 4" black screw cap with a female thread. This cap is supplied with fitting instructions and is now supplied as standard on all Harlequin oil tanks.

Download Assembly Instructions