C801C/460 Aluminum Manhole Cover
Installed on the top of the tank, it has builtin respiration system and emergency vent.
1. Light and strong
2. Emergency vent relieving pressure is from 21 to 32 KPa. The Max.free air is 7000m3/h.
3. It have one or two breathing valve inside, the pressure in the tank can be adjusted
automatically.
