Certas Domestic Image

Tank Locks & adapter

Keeping your heating oil safe is a high priority. Our tank lock is a unique locking device that provides enhanced security and is almost impossible to remove when the cap is locked.


  • Safer than a standard padlock – no torque points for forced entry using crow bars
  • Simple installation – no expertise, tools or sealants/adhesive required
The Tank Lock is also available with an adaptor that allows it to also be used on Female threaded pipes. Simply insert the adaptor into the cap and tighten by hand. Using a screwdriver tighten the machined retaining screw into the cap, and now the cap features a Male thread.