Davies Supply Group Ltd.

Calgary (800) 661-1346 Lethbridge (877) 595-7707 Saskatoon (877) 355-3377

(403) 244-2161 (403) 381-7707 (306) 933-2433

Orifices

For Complete BTU Ranges & Orifice Sizes See Orifice Capacities Chart

Starting Hole Size:

LP Gas Drill Size: #72 (.0250")

Natural Gas Drill Size: #56 (.0465")

Main Burner Gas Appliance Orifices - Brass (Fairview)

Thread Size Part Number Drill Size

1/8 MPT 661043 #43 (.089")

1/8 MPT 661044 #44 (.086")

1/8 MPT 661045 #45 (.082")

1/8 MPT 661054 #54 (.055")

1/8 MPT 661055 #55 (.052")

Main Burner Gas Appliance Orifices - Brass (Frigidaire)

Thread Size Part Number Drill Size

1/4-32" GO5-72 #72 / #56

1/4-28" GO6-72 #72 / #56

16-36" GO7-72 #72 / #56

11/32-32" GO8-72 #72 / #56

7/16-27" GO9-72 #72 / #56

#72 / #56 1/2-24" GO10-72

#72 / #56 9/16-27" GO11-72

#72 / #56 9/16-18" GO12-72

#72 / #56 3/8-27" GO14-72

#72 / #56 1/2-27" GO25-72

#72 / #56 1/8" MPT GO30-72

#72 / #56 1/4" MPT GO31-72

GO5 &GO7 GO6 &GO30

GO8

GO14

Starting Hole Size:

LP Gas Drill Size: #72 (.0250")

Natural Gas Drill Size: #56 (.0465")

Cap Gas Appliance Orifices - Brass

Drill Size Thread Size Part Number

#72 / #56 3/8-27" GO15-72

#72 / #56 1/8" FPT GO17-72

G015-72

GO9, GO10, GO11,

GO12, GO25 & GO31

A75

Davies Supply Group Ltd.

Calgary (800) 661-1346 Lethbridge (877) 595-7707 Saskatoon (877) 355-3377

(403) 244-2161 (403) 381-7707 (306) 933-2433

Orifices

Description Part Number

Repairs obsolete & modern cap orifices GO100-72

Orifice Repair Adapter

A76

Controls the flow of gas to a pilot burner and are designed to be used

with BASO® pilot burners

Has two holes which control and direct the flow of gas. This feature

cases turbulence and a better gas/air mixture for proper combustion

1/4" compression coupling

Pilot Burner Orifices - Natural & LP (BASO®)

Drill Size Type of Gas Part Number

.018" Natural Y90AA-3218C

.023" Natural Y90AA-3223C

.011" Natural & LP Y90AA-4211C

.012" Natural & LP Y90AA-4212C

.023" Natural Y90AA-7223C

19/01/18

Davies Supply Group Ltd.

Calgary (800) 661-1346 Lethbridge (877) 595-7707 Saskatoon (877) 355-3377

(403) 244-2161 (403) 381-7707 (306) 933-2433

Orifices

A77

Pilot Burner Orifices - Natural & LP (Honeywell)

Starting Hole Size:

LP Gas Drill Size: #72 (.0250")

Natural Gas Drill Size: #56 (.0465")

Pilot Gas Appliance Orifices - Brass

Drill Size Thread Size Compression Part Number

#72 / #56 7/16-27" 1/4 GO33-012

05/10/07

388468D 390686 Series

Drill Size Type of Gas Part Number Use With Pilot Burner Series

BCR 18 (.018") Natural 390686-4 Q314, Q345, Q379, Q3450,

Q3451, Q3452

L 10 (.010") LP 388468D CS893, CS894, Q303, Q305

BBR 10 (.010") LP 390686-1 Q314, Q345, Q3450, Q3451,

Q3452

BBR 12 (.012") LP 390686-25 Q345

BBR 14 (.014") LP 390686-24 Q346

Davies Supply Group Ltd.

Calgary (800) 661-1346 Lethbridge (877) 595-7707 Saskatoon (877) 355-3377

(403) 244-2161 (403) 381-7707 (306) 933-2433

Orifices

Pilot Burner Orifices - Natural & LP (Robertshaw)

Drill Size Tube Size Use With Pilot Part Number

Natural Gas

.016" 3/16" #50 & #51 10-042

.018" 1/4" 2C & 2CH 10-021

.022" 3/16" 2C & 2CH 10-208

.026" 3/16" 2C & 2CH 10-209

.014" 3/16" 2C & 2CH 10-212

.018" 3/16" #70, #71 & #11E 10-066

.016" 3/16" #70 & #71 10-126

.020" 3/16" #40 10-044

LP

.013" 1/4" or 3/16" #11 & #11D 10-032

.008" 1/4" or 3/16" #10 & #11 10-028

.010" 1/4" or 3/16" #11 10-030

.010" 1/4" #54 & Mini Pilot 100 10-035

.010" 1/4" 2C & 2CH 10-114

.016" 1/4" 2C & 2CH 10-210

.011" 1/4" 2C & 2CH 10-211

.010" 3/16" #70 & #71 10-067

.013" 3/16" #40A 10-045

.010" 3/16" #11EA 10-067

Universal / Natural Gas or LP

.014" 3/16" #63, #64 & #65 10-069

.018" 3/16" Mini Pilot 100 10-071

.014" 3/16" #70, #71 & #11EB 10-043

Use With Pilots:

2C & 2CH

Use With Pilots:

#10, #11 & #11D

Use With Pilots:

#40, #70, #71, #11E, #11EA & #11EB

A78

Use With Pilots:

Mini Pilot 100, 400, #54,

#55, #63, #64 & #65

Use With Pilots:

#50 & #51

Davies Supply Group Ltd.

Calgary (800) 661-1346 Lethbridge (877) 595-7707 Saskatoon (877) 355-3377

(403) 244-2161 (403) 381-7707 (306) 933-2433

Orifice Capacity Chart

Orifice Capacities

Natural Gas - 1050 BTU - 0.65 SP - GR

LP - 2500 BTU - 1.53 SP - GR

A79

Davies Supply Group Ltd.

Calgary (800) 661-1346 Lethbridge (877) 595-7707 Saskatoon (877) 355-3377

(403) 244-2161 (403) 381-7707 (306) 933-2433

Orifice Capacity Chart

Orifice Capacities - Continued

Natural Gas - 1050 BTU - 0.65 SP - GR

LP - 2500 BTU - 1.53 SP - GR

A80