Filter
Top Products
Page 3-3
GAS VALVE ORIFICES
An orifice is an opening used to control the direction and amount of gas that is discharged to a
burner. Orifices are available in different sizes and shapes and can be removed and replaced
without replacing the valve.
PLUG-TYPE ORIFICES
The cooktop burner orifice uses a
plug-type
orifice, as shown in Figure 3-5. The orifice is generally
constructed of brass, and consists of a threaded seat, a chamber, and a metered hole. The
threaded seat allows the orifice to be securely fastened to the burner valve. The chamber is used
as a passageway to allow gas to flow through the orifice opening. The orifice is used to control, or
limit, the amount of gas going to the burner. This type of orifice is not adjustable.
Orifice
Natural Gas
Orifice Drill Size No.
(Stamped On Top)
L.P. Gas
Orifice Drill Size No.
(Stamped On Top)
L.P. Gas
Identification
Notch In Orifice Cap
Gas Flow
Out
Gas Flow
In
Orifice Opening
Orifice
Threaded Seat
Threaded Seat
Chamber
Gas Valve
Orifice
Threaded Seat
65
55
Figure 3-5