Firetube Boilers and Accessories
Firetube Boilers and Accessories
Firetube Boilers and Accessories
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Series 4NP Natural Draft Firebox Boiler<br />
4NP Boiler Models 625 925 1250 1538 1850 2153 2500 3075 3690 4305<br />
A - Boiler Length 1 1 1 16 16 169 177 19 191 1<br />
B - Boiler Supply Height 9 10 11 1 7 1 1 1 1 1 1 1 1 1 1 1<br />
C - Base Length at Mudleg 1 1 6 1 1 1 1 1 166 161 18 1<br />
D - Boiler Width at Mudleg 6 68 7 80 86 9 9 10 10 110<br />
E - Firebox Width 8 60 66 7 78 78 90 90 96<br />
F - Firebox Length 11 1 1 9 1 0 1 0 1 8 1 1 8 171 00<br />
G - Firebox Height 0 6 66 66 66<br />
H - Supply Location 6 71 7 7 77 79 87 86 98 11<br />
J - Supply Nozzle Size (300lb. Flg.) 6 6 6 8 8 8 8 10 10<br />
K - Return Connection Location 1-1/ 1-1/ 1-1/ 1-1/ 1-1/ 1-1/ 1-1/ 1-1/ 1-1/ 1-1/<br />
M - Return Connection Size 1-1/ 1-1/ 1-1/ -1/<br />
N - Front Smokebox Depth 10 10 1 1 1 1 1 16 16 16<br />
P - Tube Removal Space 117 1 8 1 1 1 1 1 9 1 1 7 170 199<br />
Q - Rear Flue Outlet Diameter 7 9 8 8 8 1<br />
R - Base to Flue Centerline 67- / 7 -1/ 81-1 /16 91- /8 109-9/16 11 -9/16 11 -9/16 107-7/16 107-7/16 107-7/16<br />
S - Normal Water Line 76-1/ 8 -7/8 9 - /16 10 -1/ 1 1-1/ 1 -1 /16 1 -1 /16 1 - /8 1 - /8 1 - /8<br />
AA - Width Over Columns 81 87 9 99 10 111 111 1 1 1<br />
BB - Front <strong>and</strong> Rear Column Location 17 17 17 17 17 17 17 17 17 17<br />
CC - Middle Column Location 6 61 69 6 78 8<br />
Approximate Dry Weight (Lbs.) 16, 11 19,67 , 6 7, 90 , 9 9,0 0 0,190 6, 70 ,000 61,996<br />
Approximate Weight, Full (Lbs.) , 7 8,0 , 8 9, 69 6, 98 6,1 6 8, 91 67,911 79,16 90,160<br />
All specifications, dimensions <strong>and</strong> data subject to change without notice. Dimensions shown are measured in inches.
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