CFR & CFS Formed Vent Panels0 pages

CFR
& CFS

FORMED
V EN T PANELS

PROVIDES
INSTANTANEOUS
OVERPRESSURE
PROTECTION

The Composite Formed RECTANGULAR (CFR) and Composite
Formed SQUARE (CFS) Vent Panels are designed to provide
instantaneous overpressure protection for dry, bulk handling
and storage equipment, such as dust collectors, air scrubbers, sieves,
elevators, driers, silos, spreaders and screens.

The CFR and CFS Vent Panels are designed to allow a full and immediate
opening to minimize structural or mechanical damage that may be caused
by expanding gases. These gas expansions can result from the deflagration*of
dust, gases or mists in equipment, rooms, buildings or other enclosures.

FEATURES
Operating ratio up to 80% of minimum tagged rating
Withstands 1-½ psig (0,104 barg) vacuum
(consult factory for vacuum requirements exceeding 1-½ psig)
Non-fragmenting design
Burst tolerance ±25% for ratings up to 2 psig (0,14 barg) and ±0.5 psig (0,035 barg)
for ratings above 2 psig (0,14 barg)
Excellent cyclic service capabilities
(pressures going from positive to negative or negative to positive)
Full instantaneous opening
Fully opens under dynamic or static pressure conditions
INTERCHANGEABLE with existing vent panel applications
Available with Continental’s B.D.I.® (Burst Disc Indicator) Alarm System

SPECIFICATIONS
Both the CFR and CFS Vent Panels have a standard material construction of 316 SS top section, TFE
fluoropolymer seal and 316 SS vacuum support. Each configuration is available in burst pressures from
1.0 psig (0,07 barg) through 10 psig (0.69 barg). Refer to Table 1 for size and pressure specifications.

MAXIMUM OPERATING PRESSURE & BURST TOLERANCE
t The recommended operating pressure for the CFR and CFS Vent Panels is 80%. In addition, CFR
and CFS Vent Panels have a burst tolerance of ±25% for burst ratings up to 2 psig (0,14 barg) and
±0.5 psig (0,035 barg) for burst ratings above 2 psig (0,14 barg). To determine the recommended
operating pressure, subtract the burst tolerance from the vent panel’s burst rating which
establishes the minimum burst pressure, then multiply by 80%.

t For example, a CFR or CFS Vent Panel rated 3.0 psig (0,21 barg) will have a minimum burst pressure
of 2.5 psig (0,17 barg) and a recommended operating limit of 1.75 psig (0,12 barg). (Burst rating
minus burst tolerance x .80).
* Deflagration as defined under NFPA-68 is: “Burning which takes place at a flame speed below the velocity of sound in the unburned media.” Vent panels are not
generally suitable for protection against pressure or shock waves produced from detonation of dust, gases, mists or explosives. Detonation as defined by NFPA-68
is: “Burning which takes place at a flame speed above the velocity of sound in the unburned media.”
PERFO RMANC E

U ND ER

PRESS U RE

®