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High Pressure Steam Boilers - 150 PSI Atmospheric / Natural Gas Fired


Rite Atmospheric Natural Gas Fired Rite Atmospheric Natural Gas Fired High Pressure Steam Boilers have been providing our valued customers with high quality steam safely and reliably for over forty years. From autoclaves to medical centers food processing to textiles, hospitals to industrial process manufacturing - these heavy duty watertube steamers are available in 16 different models, ranging from 398 – 10,456 MBH input (9.5 - 250 Boiler Horsepower) for the widest selection possible.

So simple to maintain and operate, Rite Steam Boilers feature complete waterside access so that virtually all scale and mud deposits can be seen and mechanically cleaned during a single scheduled maintenance shutdown. The result - Better fuel-to-steam efficiency and lower operating cost over the life of your boiler investment. Consider a few of our other standard features: Rite’s floating heads that eliminate pressure vessel cracks and broken welds caused by thermal stress cycling (backed by our 25 Year Thermal Shock Warranty), Rite’s “superheated” drying tubes that regularly boost steam quality at the nozzle into the 99%+ range, Rite’s bolted/gasketed headplates that eliminate any possibility of hydraulic explosion in the event that safety devices fail - and you have a better boiler by design.

RITE ATMOSPHERIC BURNER FEATURES

Rite Atmospheric Boiler are an excellent choice when: Low NOx emissions are not required, natural gas will be the only fuel used, the installation is indoors (See our line of weatherproof models for outdoor applications), and when lower combustion efficiencies at less the full firing rate are acceptable.

Atmospheric burners are far less expensive than power burners, so when the above criteria is met, then Atmospherics are strong economical alternative to Rite's outstanding line of power burner fired steam boilers. Other factors favoring Atmospherics are: Extremely low electrical power consumptions (no energy hogging fan motors), Rapid start-up on demand (No pre-purge blower fan), Lower Height, Whisper-quiet burner operation.

Atmospheric High Pressure Steam Boilers

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Models and Ratings


Stack / Draft Requirements

  • UL listed for use with Type B Vent.
  • Minimum stack height including Draft Control is 10 feet.
  • The stack should be supported independently of the boiler and an adjustable length section of stack should be installed after the barometric damper to allow for future separation. All Rite Boilers have internal stack supports to handle the weight of the stack during installation.
  • Boilers with barometric damper draft control should draft between -.05" to -.09" W.C. when firing. Boilers with draft diverters will draft between -.02" to -.04" W.C.
  • A draft gauge is installed on all boilers equipped with barometric dampers to help set and maintain the draft.

Air Requirements

Adequate Combustion/Ventilation Air is vital for safe, efficient operation. Refer to the latest edition of the Uniform Mechanical Code or consult your local Building and Safety Department for specific requirements. Warning: Do not install in a room that will develop negative pressure without utilizing a properly sized induced draft fan.

Electrical Requirements

  • A 120/60/1 15 amp supply is required to boiler-burner circuit.
  • Separate electrical supply may be required to operate boiler feed pump.

Natural Gas Supply Requirements (Static and at Flow)

  • Models P9.5 - P15: 6" w.c. min. to 14” w.c. max.
  • Models P20 - P100: 7” w.c. min. to 28” w.c. max.
  • Models P125 - P175: 15” w.c. min. to 28” w.c. max.
  • Models P200 - P250: 20” w.c. min. to 28” w.c. max.
  • For other gas pressures, consult factory or your Rite Representative.

Propane Supply Requirements: 11" w.c. min. to 14" w.c. max.

Elevation Deration

Ratings given below are for elevations up to 2000 feet. Above 2000' Ratings should be reduced at the rate of 4% for every 1000 feet above seal level.

Feedwater Systems & Blowdown Tanks

Rite manufactures a complete line of Condensate Return Feedwater Tanks and Blowdown Tanks for our Steam Boilers shown below. (link)

Information in the table below is subject to change during website development. Please contact Rite with issues or questions.

BOILER MODEL
Input MBH
MBH (Output)
Boiler Horsepower
Heating Surface Sq. Ft.
Flooded Water Content Gallons
Normal Water Level Content Gallons
Pounds of Steam per Hour @ 212°
Nominal Shipping Weight (lbs)
P9.5
398
318
9.5
65
35
27
328
2230
P10
419
335
10.0
65
35
27
345
2230
P15
628
502
15.0
85
40
31
518
2460
P20
838
670
20.0
105
45
35
690
2690
P25
1046
837
25.0
115
65
53
863
3540
P35
1465
1172
35.0
156
85
62
1208
4020
P48
1950
1560
48.0
214
100
73
1656
4630
P50
2093
1674
50.0
214
100
73
1725
4630
P75
3139
2511
75.0
349
150
120
2588
8500
P100
4185
3348
100.0
460
175
140
3450
9700
P125
5230
4184
125.0
571
195
160
4313
11300
P150
6276
5021
150.0
733
280
220
5175
16200
P175
7323
5858
175.0
851
320
250
6038
17800
P200
8369
6695
200.0
969
360
280
6900
19200
P225
9425
7540
225.0
1020
390
300
7763
20300
P250
10456
8365
250.0
1125
420
320
8625
21500

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Models and Dimensions


Atmospheric High Pressure Steam Boiler Diagram

  • DIMENSIONS ARE IN INCHES - SUBJECT TO PRODUCTION TOLERANCES AND CHANGE WITHOUT NOTICE. CERTIFIED DIMENSIONS AVAILABLE UPON REQUEST.
  • BOILERS APPROVED FOR INSTALLATION ON NON - COMBUSTIBLE FLOORS ONLY.

1Draft Diverters aer supplied standard on Models P9.5 - P25 onlyu Barometric Dampers will be shipped one size smaller then D dimensions for strcks up to 25 feet for vertical height (as shown in column E), full size (sames as D dimensions) for stacks 25 to 50 feet tall and one size larger for stacks over 50 feet tall. Barometric Damper Tee by others

2May vary - sizes shown are for UL gas trains at standard supply pressures. Gas connections can be male NPTpipe thread. All other threaded connections are female NPT.

311/2” and 21/2” connections are Female NPT. 4” and 6” flanges are ANSI 150 lb. SA-105 raised face. Flanged outlets may be reduced.

4Standard right hand construction shown illustrated above. Left hand construction available at no extra charge.

Information in the table below is subject to change during website development. Please contact Rite with issues or questions.

BOILER MODEL
A
B
C
COA
D
E
F
H
J
K
L
N
S
T
Length Jacket
Width Jacket
Height Flush
Height Overall
Stack Dia.
Draft Control
Twin
Stack
Tube Maint.
Gas Conn.
Steam Supply
Feed Water
Side Space
Blow Down
Head Swing
P9.5
44
31
65
74
9
9 D.D. (33)
-
37
0.75
1.5
1.0
10
1.0
24
P10
44
31
65
74
9
9 D.D. (33)
-
37
0.75
1.5
1.0
10
1.0
24
P15
54
31
65
74
10
10 D.D. (34)
-
47
1.00
1.5
1.0
12
1.0
24
P20
64
31
65
74
12
12 D.D. (36)
-
57
1.00
1.5
1.0
12
1.0
24
P25
56
39
66
75
14
14 D.D. (36)
-
46
1.00
2.5
1.0
12
1.5
32
P35
70
39
66
75
16
14 BARO
-
60
1.25
2.5
1.0
12
1.5
32
P48
90
39
66
75
18
16 BARO
-
80
1.50
2.5
1.0
14
1.5
32
P50
90
39
66
75
18
16 BARO
-
80
1.50
2.5
1.0
14
1.5
32
P75
89
53
71
80
20
18 BARO
-
75
2.00
4 FL
1.5
14
1.5
*
P100
111
53
71
80
22
20 BARO
-
97
2.00
4 FL
1.5
14
1.5
*
P125
133
53
71
80
24
20 BARO
-
119
2.50
4 FL
1.5
16
1.5
*
P150
124
75
75
84
28
24 BARO
-
109
2.50
6 FL
1.5
16
2.0
*
P175
139
75
75
84
30
28 BARO
-
124
2.50
6 FL
1.5
16
2.0
*
P200
154
75
75
84
2-24
(2) 20 BARO
30
139
2.50
6 FL
1.5
18
2.0
*
P225
165
75
75
84
2-24
(2) 20 BARO
32
150
2.50
6 FL
1.5
18
2.0
*
P250
176
75
75
84
2-24
(2)24 BARO
35
161
2.50
6 FL
1.5
18
2.0
*

*Consult factory

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