Find Your Grill Parts:
Spider Guards - Screening is often
built into the venturi openings to act as a spider guard. Spider guards
can be fabricated by wrapping small sections of aluminum screen around
the venturi openings and securing with small gauge wire to keep the
screens in place. The guards should be cleaned periodically to keep
dust from blocking air openings.
The venturi tubes are the tubes that extend from the burner to the control
valves. These have openings at the ends to allow air to mix with the gas
as it leaves the control valve. Generally they are fitted with moveable
shutters that allow for air mixture adjustment and with spider guards or
small screening to discourage spiders and insects from entering.
- Bugs - Commonly, spiders and small
insects will spin webs or build nests inside the venturi tubes. This
especially occurs in late summer and fall before frost, when spiders
are most active. These nests can obstruct gas flow and cause a fire
in and around the valve at the control panel. Such a fire can cause
operator injury and serious damage to your grill. To help prevent a
blockage and ensure full heat output, clean and inspect venturi tubes
Adjustment - Moveable shutters
are a part of most venturi tubes and have a locking screw which when
loosened allows the shutter to be rotated, controlling the air and gas
mixture and subsequently the burner flame.
Some venturi tubes are factory set and have no means of adjustment.
- Remove burner assembly from grill.
- Look inside lower end of venturi tubes
for insect nests, cobwebs, or wasp mud.
- To remove insect nests, cobwebs or
wasp mud, use an accessory flexible venturi brush or bend a small
hook on one end of a 20 inch long flexible length of wire.
- Use the brush or wire to remove the
obstructions from the venture tubes.
- Inspect and clean burner if needed.
- Replace the burner assembly into the
- Make sure valve
orifices are inside venturi tubes.
NOTE: These tubes do not mechanically attach
to the valve. Be sure that the valve orifice extends at least
1/4 of an inch into the venture tube.
- Secure burner to grill.
Replacement and inspecting for rust. What
to look for....
Corrosion starts at the top of the burner,
and usually at the seams where food acids accumulate. If the burner is
left unattended and not replaced at an appropriate time the rust will
eventually work its way down under the burner to where the venturis attach
requiring venturi replacement.
The information provided is not intended to take the place of the owners
manual that was supplied with your grill. Specific safety, repair
and maintenance information varies between grill models and brands.
Always refer to your owners manual first.
- Twist-Lock venturis.
Featured on Sunbeam and new model Charmglow
grills, the twist-lock venturi is designed for ease of installation
and assembly. The venturis are mounted by placing the venturi into
the inlet on the burner and twisting the venturi to a perpendicular
position. At that point there are two small metal lips on the venturi
that lock the venturi into place causing a secure seal. It is common
that these lips will corrode which inhibits the venturi from locking
securely into place. Although burners of this type are shipped with
the collector plate which gives additional support to the venturis,
we recommend replacement if the locking lips on the venturis show
signs of rust .
- Flange mount venturis.
The flange mount is the most common
type of venturi and has a mounting flange that attaches with two
screws or nuts. There is a gasket that goes between the flange and
the burner which gives a secure seal. Pitting and rusting of the
flange surface may allow gas to escape between the gasket and the
flange. If this surface is corroded we recommend replacement of
the venturi. As an added note, universal venturis may not fit on
original equipment burners because of a difference in the hole pattern
on the flange.