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EX Gas/Oil Series - High Pressure Steam Boiler
Miura’s exclusive “low water content, watertube” design is the most versatile boiler available in the marketplace today. A once-through, forced circulation steam boiler producing steam in just 5 minutes while maintaining an 85% fuel-to-steam efficiency.
A once-through, forced-flow, steam generator design provides full output within 5 minutes.
- Gas-Oil dual fuel burner
- Up to 300BHP per boiler and up to 4,500 HP (150,000lb/hr) with our MI-system
- Up to 250psi pressure boiler is available.
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SpecificationsDimensions and Schematic
Note
Specifications
| EX-300 SGO |
| Boiler Type |
No 2 Oil Fired, Natural Gas or Propane Fired with Economizer |
| Utilization Horsepower |
300 HP |
| Maximum Pressure |
170 psig MAWP, 150 psig Maximum operating |
| Equivalent Output |
10,350 LB/HR |
| Heat Output |
10,050,000 BTU/HR |
| Efficiency |
85% (80% without Economizer) - fuel to steam |
| Heating Surface Area |
468 FT² |
| Operational Weight |
18,000 LBS |
| Shipping Weight |
17,100 LBS |
| Dimensions Given are Approximate |
| Width |
105.5 in. |
| Length |
142 in. |
| Height |
157 in. |
| Combustion System |
Proprietary forced draft, step fired modulation Hi-Low-Off |
| Ignition System |
Electric spark ignited, interrupted gas pilot |
| Power Supply |
230, 460, 575 V, 3 Phase, 60 Hz |
| Max. Electrical Consumption |
35.4 KVA (37.3 for oil) |
| Fuel Type |
Natural gas or propane (3-5 psig), No. 2 oil |
| Gas Consumption |
11,780 SCFH |
| No.2 Oil |
84.5 GAL/Hr |
| Gas Supply Pressure |
3-5 psig natural gas or propane |
| Main Steam Outlet Valve |
4 in. |
| Safety Valve Outlet |
Two 2 1/2 in. |
| Main Water Inlet |
1 1/4in. |
| Fuel Gas Inlet |
2 1/2in. |
| Fuel Oil Inlet |
3/4 in. |
| Automatic Surface Blowdown |
Two 3/8 in. |
| Manual Blowdown |
Two 1 in. |
| Chimney Diameter (ID) |
26 in. |
| Flame Detector |
Ultraviolet flame eye sensor |
| Pressure Control |
Adjustable pressure transducer and switch |
| Liquid Volume Control |
Electric Conductivity Type |
| Overheat Protection |
Low Water Cut Off Thermocouple |
Dimensions
Front View 
| EX-300 SGO |
| A1 |
A2 |
A3 |
A4 |
B1 |
B2 |
B3 |
B4 |
| 114 |
59 ½ |
42 |
7 ½ |
140 ½ |
55 |
29 ½ |
68 |
| H1* |
H2 |
H2** |
h |
| 156 ½ |
87 |
156 ½ |
130 ½ |
Side View
Top View
| No. |
Name of Part |
| 1 |
BOILER VESSEL |
| 2 |
STEAM SEPARATOR |
| 3 |
LIQUID VOLUME CONTROLLER |
| 4 |
ECONOMIZER |
| 5 |
BLOWER |
| 6 |
CONTROL BOX |
| 7 |
WIND BOX |
| 8 |
OIL PUMP |
| 9 |
LADDER |
| 10 |
STEAM OUTLET FLANGE |
| 11 |
MAIN SAFETY VALVE(S) |
| 12 |
MANUAL BLOW DOWN |
| 13 |
MANUAL BLOW DOWN |
| 14 |
TOP INSPECTION HOLE |
| 15 |
SIDE INSPECTION HOLE |
| 16 |
AUTOMATIC BLOWDOWN |
| 17 |
AIR DUCT |
| 18 |
ECONOMIZER SAFETY VALVE |
| 19 |
FEEDWATER PIPING |
| 20 |
MAIN GAS TRAIN |
Schematic View (Standard)
| No. |
Name of Part |
| 1 |
MAIN GAS VALVE |
| 2 |
MAIN GAS REGULATOR |
| 3 |
GAS CONTROL VALVE |
| 4 |
MAIN GAS ORIFICE (LOW) |
| 5 |
TEST FIRING VALVE |
| 6 |
PILOT GAS VALVE |
| 7 |
PILOT GAS REGULATOR |
| 8 |
PILOT GAS CONTROL VALVE |
| 9 |
PILOT GAS ORIFICE |
| 10 |
PILOT AIR ORIFICE (HIGH) |
| 11 |
HIGH-LOW CONTROL VALVE |
| 12 |
SAFETY VALVE(S) |
| 13 |
SAFETY RELIEF VALVE* |
| 14 |
AIR VENT VALVE |
| 15 |
STEAM PRESSURE SWITCH |
| 16 |
STEAM PRESSURE SWITCH |
| 17 |
PRESSURE GAUGE |
| 18 |
PRESSURE SENSOR |
| 19 |
BOILER BLOW-OFF VALVE |
| 20 |
BLOWDOWN CONTROL VALVE |
| 21 |
SAMPLE WATER VALVE |
| 22 |
BLOWDOWN STRAINER |
| 23 |
SAMPLE WATER VALVE |
| 24 |
GAS PRESSURE SWITCH |
| 25 |
GAS PRESSURE SWITCH |
| 26 |
AIR PRESSURE SWITCH |
| 27 |
WATER VALVE* |
| 28 |
CHECK VALVE* |
| 29 |
CHECK VALVE* |
| 30 |
CHECK VALVE* |
| 31 |
FEED WATER VALVE |
| 32 |
OIL PUMP |
| 33 |
OIL FILTER |
| 34 |
OIL CONTROL VALVE |
| 35 |
OIL CONTROL VALVE |
| 36 |
OIL CONTROL VALVE |
| 37 |
OIL PRESSURE GAUGE |
| 38 |
OIL VENT VALVE |
| 39 |
GAS VENT VALVE* |
| 40 |
AIR CONTROL VALVE |
| 41 |
L.V.C. BLOW-OFF VALVE |
| 42 |
PILOT AIR ORIFICE |
| 43 |
OIL PRESSURE SWITCH* |
* MAY NOT BE SUPPLIED OR OPTIONAL ACCORDING TO BOILER TYPE
** NUMEROUS OPTIONS ARE AVAILABLE UPON REQUEST
Note
- Optional EXH-SGO Series at 250 Psig MAWP, 225 Psig maximum operating
- Equivalent output calculated from and at 212¬?F (100¬?C) feed water at 212¬?F (100¬?C) steam.
- Thermal efficiencies are based on high heating values of fuels at 68¬?F (20¬?C) feed water.
- UL and CGA/CSA approved for natural gas, propane, and No. 2 oil.
- Gas consumption based on natural gas with high heating 1004 BTU/SCF.
- All Miura steam boilers are fully packaged and test fired at factory.
- Built to meet or exceed UL and ASME standards in U.S.A.; CGA/CSA and B-51 standards in Canada.
- Flue gas recirculation is optional only with the economizer.
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