KBB0 pages

TEDDINGTON APPLIANCE CONTROLS LTD

KBB
FIRE VALVE

l
Non-Electric Safety Valve
l
Manual Reset
l
Manual On/Off for Appliance Servicing
l
Sensor System Fails Safe if Broken
l
Two Alternative Temperature Settings
l
Remote Sensing Up To 20m (66ft)
l
Conforms To BS 5410 Part 1
l
Approved To OFS E101

Application
The KBB is designed as a fire safety shut-off valve for
use on oil burning equipment. The valve is to be installed
in the oil supply pipeline outside the building with the
sensor mounted firmly inside the appliance above the
burner. The capillary should then be run in a protected
position without over-sharp bends particularly near the
sensor and valve. The outline detail overleaf illustrates
the relative positions of the valve and the sensor in a
boiler compartment.

Operation
The KBB is a quick acting thermally operated valve with a
spring loaded trip mechanism and sealed temperaturesensing system consisting of a bellows, capillary tube
and sensor phial. The valve will snap closed when the
temperature at the sensor phial exceeds the set value.
The valve will remain in the shut-off condition until the
appropriate action has been taken to restore normal
operating conditions and the reset button has been
pressed.

Physical Description
The KBB is a compact valve of corrosion resistant, noncombustible construction and entirely mechanical in
operation, requiring no power supply. The sensor is
connected to the valve by a capillary, which cannot be
detached. The reset button can be found at the base of
the valve head and is pressed to reset the valve or if
pulled will toggle the valve into the shut-off condition.

The operation of the fire valve can be verified by using
the KBT1000 test unit set to the appropriate temperature.
This checks that the operation to shut-off the oil supply
pipe takes place and enables a check to be made that
the valve can be manually reset once the sensor phial
temperature has reduced to normal operating level. The
reset button must be pressed firmly to ensure the valve is
positively latched in the open position.
The valve can also be shut-off manually by pulling the
reset button.