Manhole cover are arguably the most important safety component fitted to a vehicle’s tanker. Dowell-Energy models including pressure venting to prevent tanker explosion if a fire occurs (7000m³/hr at 350 mb), as well as a pressure vacuum breather to complete with rollover seal to stop leakages if a tank is overturned. Operators are also kept safe by a two-stage opening mechanism that releases residual pressure before fully opening. This stops dangerous kick-backs. Our cast option includes blind bolt holes to ensure no liquid cargo can leak through and webs on the underside of the base plate to increase structural integrity. The springs used for the emergency venting are corrosion-proof, assuring correct operation regardless of environment.
- Pressure and vacuum vent fitted as standard for tank breathing.
- 20″ baseplate for ease of access.
- Self-aligning seal ensures pressure tight operation at all times.
- Internal locking structure effectively prevents unauthorized operation.
