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