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M411988
38
Orifice Sizing for Stacked Tumbler Gas Valves
† Check Gas Valve Cavity Number for proper outer orifice part number. (Refer to illustration on next page.)
FIRING RATE
VALVE TYPE
75,000 BTU
DUAL INPUT VALVES
63,000 BTU
DUAL INPUT VALVES
63,000 BTU
SINGLE INPUT
VALVES
Natural Gas
Valves
60 Hertz/Natural Gas Valve Part No. 430650
50 Hertz/Natural Gas Valve Part No. 430657
60 Hertz/Natural Gas Valve Part No. 430894
50 Hertz/Natural Gas Valve Part No. 430896
60 Hertz/Nat. Gas Valve
Part No. 431072
50 Hertz/Nat. Gas Valve
Part No. 431074
L.P. (Liquefied
Petroleum)
Valves
60 Hertz/L.P. Gas Valve Part No. 430656
50 Hertz/L.P. Gas Valve Part No. 430658
60 Hertz/Natural Gas Valve Part No. 430895
50 Hertz/Natural Gas Valve Part No. 430897
60 Hertz/L.P. Gas Valve
Part No. 431073
50 Hertz/Nat. Gas Valve
Part No. 431075
Prior to Serial No. DTCK0714594ZA
Serial No. DTCK0714594ZA
through DTCK9211033713
Starting with Serial No.
DTCK9211033714
Gas
Type
Alti-
tude
Outer
Orif.
Dec.
Size
Part
No.
Inner
Orif.
Dec.
Size
Part
No.
Outer
Orif.
Dec.
Size
Part
No.
Inner
Orif.
Dec.
Size
Part
No.
Outer
Orif.
Dec.
Size
Part
No.
Nat.
Gas
0 –
2000
#13 (.1850) 430773 1/8" (.1250) 430654 † #30 (.1285) 430898 #24 (.1520) 431191
2001 –
4000
#16 (.1770) 430960 #31 (.1200) 430760 #21 (.1590) 430935 1/8" (.1250) 430654 #26 (.1470) 431192
4001 –
6000
#17 (.1730) 430961 #32 (.1160) 430763 #22 (.1570) 430936 #31 (.1200) 430760 #27 (.1440) 430938
6001 –
8000
#18 (.1695) 430933 #33 (.1130) 430963 #25 (.1495) 430937 #32 (.1160) 430763 #28 (.1405) 431207
8001 –
10000
#20 (.1610) 430962 #34 (.1110) 430765 #27 (.1440) 430938 #34 (.1110) 430765 #29 (.1360) 431193
L.N.G.
L.N.G.
0 –
2000
– #22 (.1570) 430936 #31 (.1200) 430760 #27 (.1440) 430938
Town
Gas
Town
Gas
(L.P.) 0
– 2000
– #V (.3770) 431174 – – – #V (.3770) 431174
L.P.
0 –
2000
#37 (.1040) 430736 #47 (.0785) 430655 3/32" (.0938) 431010 #45 (.0820) 430893 3/32" (.0938) 431010
2001 –
4000
#39 (.0995) 430768 #48 (.0760) 430761 #43 (.0890) 430892 #47 (.0785) 430655 #43 (.0890) 430892
4001 –
6000
#41 (.0960) 430770 #49 (.0730) 430762 #43 (.0890) 430892 #48 (.0760) 430761 #43 (.0890) 430892
6001 –
8000
#42 (.0935) 430772 #50 (.0700) 430764 #44 (.0860) 430939 #48 (.0760) 430761 #44 (.0860) 430939
8001 –
10000
#43 (.0890) 430774 #51 (.0670) 430766 #46 (.0810) 430941 #49 (.0730) 430762 #46 (.0810) 430941
Town
Gas
Town
Gas 0
– 2000
– #A (.2340) 431130 – – – – – –
Gas
Conversion
Kits
Dual Input Valves Dual Input Valves Single Input Valves
Nat. Gas to
L.P.
474P3 514P3 563P3
L.P. to Nat.
Gas
475P3 513P3 550P3
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