Metal Manhole valves have limited usage.
These limitations are the result of their structural differences and their nature witch make them not be used in any circumstance.
For example, the locations with infectious and acidic materials cannot use the metal manhole door because it causes manhole door decay and corrosion.
Also, the industrial locations with high weight and pressure, due to the fragile structure of the manhole door, cannot be used.
However, the composite valves, having the mentioned features, can be used in a variety of situations specially where the metal manhole door cannot be installed.
Like: power plants, industrial estates, laboratories, gas and petrochemical Companies and....
Fibergs as a vanguard of producing composite manhole covers can offer you a free consultation and assurance of high quality with reasonable price. Just contact us via contact page.