Manhole Covers & Accessories

Emergency venting (fire engulfment), tank breathing and flanges for ancilliary equipment are included with all our Manhole Covers. These features protect the tanker against rupture, division reversal and explosion when either natural or catastrophic internal pressures build up. Vacuum relief protects against tank implosion and compartment division reversal. The 10" hinged, lockable hatch facilitates easy insertion of top loading pipes while the ancilliary flanges save cost, time and aid tank integrity.