4-PASS VERTICAL BOILERCompact Tubeless Design
HIGH PRESSURE BOILERCapacities from 6 to 100 BHP.
201 to 3450 MBTU/HR.
SERIES 4VT
BOILER & WELDING CO., INC.
SKID MOUNTEDMODULAR PACKAGED
STEAMPressures to 15-250 PSI.
HOT WATER
Section IV30-160 PSI.
“Heat transfers evenly ... eliminating the metal stress due to uneven heat transfer common in other designs.”
MORE STEAM STORAGE
n Capacity to handle swing and spike loads – quick recovery quick response.n The larger steam-release surface is calmer, reducing carry over of unevaporated water.n The resulting drier steam also reduces system scaling.n In addition, dry steam helps to eliminate unnecessary extra condensate. Energy and fuel are saved. Longer life results.
DURABILITY
n Fire does not pass under the bottom mud ring, eliminating the blistering that occurs with other designs.n Cooler furnace gases are lo- cated at the bottom of the vessel where scale is most likely to occur. Baking of scale is alleviated.
EASIER SERVICE
n Fireside fin access in top and bottom.n Access opening above feed water inlet for easy cleaning.n Thoughtfully engineered with the owner in mind.n No heavy doors or covers to complicate service procedures.
First-Pass in furnace pipe. Second-Pass follows path through fins along outside of shell.
Third-Pass follows path through fins along outside of shell.
Fourth-Pass follows path through fins along outside of shell, then merges together to exit exhaust stack.
Illustration Shows the Progression of Four Gas Paths Around the Circumference of the Boiler Shell.
INSPECTION ACCESS
n The waterside openings are located in the most effective positions. The lower handholes offer far better access for both cleanout and inspection.n These more functional locations avoid the obstructing handhole “tunnels” used by our competitors.n The top opening offers a strategic view of the furnace crown sheet.
OPTIONS AND ALTERNATIVES
n We specialize in customizing your boiler. The 4VT can be equipped to suit a wide variety of installations and specifications. We will help direct you to the most cost effective models and features.
Hurst Pre Certified 4VT LOW NOx boilerscan achieve less than 30 PPM NOx at 3%
O2 without the need for inducedflue gas recirculation.
4VT LN SeriesShown withPowerFlame Burner
Pre Certified
SIMPLE INSTALLATION
n Unit is skid mounted for easy handling.n Factory wired with wiring schematic included in the manual.n Efficient and space saving layout.
FOUR-PASS DESIGN
n The gases leaving the furnace are split four ways and travel through four individual serpentine fin passages to the stack outlet.n Each quarter of the heat travels its own four-pass path (see illustration ).n Heat transfers evenly to the fins and boiler shell, eliminating the metal stress due to uneven heat transfer common in other designs.
AVAILABLE ACCESSORIES
n The 4VT is available in a complete package with an optional compact skid-mounted feedwater system for a finished wired and piped, ready to-fire.n Blowdown separators are also available.
CUT AWAY VIEW
FOUR
PAS
S EF
FICI
ENCY
ALL
STEE
L CO
NSTR
UCTI
ONTURBULENT FLAME
n Heat is forced down, with the fire whirling and spinning against its natural flow. This pattern enhances recirculation, mixing and heat transfer, driving more energy into the water for greater fuel-to-steam efficiency.
RELIABILITY
n The furnace crown is water cooled, eliminating refractory breakdown inherent in units of inferior design.n No fire tubes, water coils or “in the fire” mud rings to burnout.
SAFETY
n Electrical components are located away from the floor, helping eliminate the possibility of water coming in contact with electricity.n Boiler built to ASME Section 1, High Pressure Boiler Code.n CSD-1 approved.n Burner/Boiler UL Packaged
“EYE HIGH” BURNER
n No step ladder is needed to service.n No bending over or sitting on the floor.n The air intake is located in the center of the unit so dust is not pulled from the floor.
BOILER SPECIFICATIONS BOILER HORSEPOWER 6 10 15 20 25 30 40 50 60 70 80 100STEAMOUTPUT
FROM & @212° F
LBS/HRKG/HR
20794
345156
518235
690313
863391
1035469
1380626
1725782
2070939
24151095
27601252
34501565
GROSSOUTPUT MBH BTU X 1000
KCAL X 100020151
33584
502127
670169
837211
1004253
1339337
1674422
2009506
2343590
2678675
3348844
INPUTREQUIRED
BTU X 1000KCAL X 1000
25163.3
418105
628158
837211
1046264
1255316
1674422
2092527
2511633
2929738
3348844
41841054
FIRING RATENAT. GAS
1000 BTU/FT
FT3/HRM3/HR
2517.1
41811.8
62817.8
83723.7
104629.6
125535.5
167447.4
209259.2
251171.1
292982.9
334894.8
4184118.5
FIRING RATELP GAS
91,500BTU/GAL
GPHLPH
2.710.4
4.617.3
6.926
9.134.6
11.443.3
13.751.9
18.369.2
22.986.6
27.4103.9
32121.2
36.6138.5
45.7173.1
FIRING RATEOIL #2
140,000BTU/GAL
GPHLPH
1.86.8
311.3
4.517
622.6
7.528.3
933.9
1245.3
14.956.6
17.967.9
20.979.2
23.990.5
29.9113.1
A STEAM OUTLET HIGH PRESS.
INMM
125
125
125
125
1.2532
1.538
251
2.564
2.564
2.564
2.564
376 A
A STEAM OUTLET LOW PRESS.
INMM
251
251
251
376
376
4102
4102
6152
6152
6152
6152
6152 A
B BLOWDOWN 150 PSI. INMM
125
125
125
125
125
1.2532
1.2532
1.2532
1.2532
1.2532
1.2532
1.2532 B
B BLOWDOWN LOW PRESS.
INMM
125
125
125
125
125
1.2532
1.2532
1.2532
1.2532
1.538
1.538
1.538 B
C FEEDWATER INMM
.7519
.7519
.7519
.7519
.7519
125
125
125
125
125
125
1.2532 C
D STACK DIA. INMM
8203
8203
8203
8203
8203
10254
12305
12305
12305
14356
14356
14356 D
E STACK HEIGHT INMM
521321
521321
581473
641626
641626
631600
731854
832108
832108
822083
822083
822083 E
F WIDTH WITHOUT TRIM INMM
35.2894
35.2894
35.2894
35.2894
35.2894
43.71111
53.51359
591499
591499
681727
681727
78.21986 F
G WIDTH WITH TRIM INMM
421067
421067
421067
421067
421067
49.51257
58.51486
631600
631600
721829
721829
822083 G
H OVER ALL HEIGHT INMM
792007
792007
852159
852159
852159
852159
932362
1052667
1052667
1062692
1062692
1062692 H
I HEIGHT WITHOUT TRIM INMM
651651
651651
711803
771956
771956
771956
882235
982489
982489
982489
982489
982489 I
J LENGTH INMM
601524
601524
601524
601524
601524
781981
872210
1152921
1203048
1203048
1203048
1273226 J
SHIPPING WEIGHT DRY LBSKG
1931876
1931876
2101953
2181989
2181989
26211189
48522201
66803030
66803030
92254184
92254184
112055082
WATER CONTENT - WATER SERIES FLOODED GALSLITERS
62235
62235
68257
79299
79299
113428
208787
3131185
3131185
4401665
4401665
5912237
WATER CONTENT - STEAM SERIES NWL GALSLITERS
48182
48182
54204
54204
54204
73267
122462
158598
158598
196742
196742
2901098
BOILER HORSEPOWER 6 10 15 20 25 30 40 50 60 70 80 100
HBC-0950507/2014
TOP VIEW
FRONT VIEWSIDE VIEW
CONNECTIONS OVER FOUR INCHES ON LOW PRESSURE MODELS ARE #150 FLANGES. ALL OTHER CONNECTIONS ARE NPT.DIMENSIONS SUBJECT TO CHANGE WITHOUT NOTICE. CERTIFIED DRAWING AVAILABLE UPON REQUEST.
Skid Packaged Options
Feedwater System Blow Down Flash SeparatorWater Softener Chemical Mix Systems
Designed, constructed and
stamped inaccordance with the requirements
of the ASME Boiler Codes.
Inspected and registered with the National Board of Boiler & Pressure Vessel Inspectors.
& Welding Co., Inc.HURST BOILER