An important function of an inlet grate is capacity - the
ability to intercept the storm water from the gutter. Hydraulic tests prove
the Type “L” Vane Style Grates will accept more water than any of the
conventional grate styles under virtually all flow conditions. Even with
extremely high volume and velocity conditions in the gutter, there will be
very little if any water that the grate will not capture, providing the
water passes over it. The efficiency of these grates can be as much as 20%
greater than conventional designs. For this reason, an ever increasing
number of States, Counties, and Municipalities have adopted the Type “L”
Vane Style Grate as a standard.
GRATE REPLACEMENT
Type “L” Vane Style Grates are being used in grate
replacement programs in many cities throughout the country, not only because
of their storm water capacity features but also because they are more likely
to be safe for bicycles than many other styles of grates. A replacement high
capacity, Type “L” grate can be dimensioned to fit most catch basin inlets.
Our Product Engineering and Sales Departments are available to assist you in
developing your grate replacement program.
BICYCLE GRATES
In addition to its increased capacity, the Type “L” Vane
Grate is also being specified when bicycle traffic is a consideration.
These grates, when installed either in a gutter line or in an open area can
provide desirable features for use when bicycles are likely to be present.
DEBRIS
A properly functioning inlet grate such as the Type “L”
Vane Style Grate must screen out the larger, harmful debris and prevent it
from entering and clogging the sewer pipe. Small debris, however, which can
be easily handled by the underground portions of the storm sewer, are
allowed to pass through the grate openings to prevent blockage on the
surface of the grate.
