LX-300 Zero-Side-Clearance Steam Boiler Packs All the Horsepower You Need in 1/4 the Space

Small footprint design offers high-efficiency, On-Demand Steam Saving money, space, and start-up time.

  • Modular design allows flexibility to customize your steam plant to meet any demand
    and load profile optimized for superior energy management
  • Zero-side-clearance design reduces boiler room size and cuts construction costs
  • Achieves 87% efficiency using Miura’s built-in energy recovery & water treatment systems
  • Steam production from cold start in 5 minutes
  • Saves up to 20% on fuel costs & CO2 emissions on average
  • New design innovations optimize combustion for consistent low NOx emissions
  • Ultra Low NOx Model Now Available (9 ppm)

MIURA’s exclusive “low water content, water tube” 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 maintains an 85% fuel-to-steam efficiency.

Specifications
LX-300 SG
Utilization Horsepower 300HP
Maximum Pressure 170 psig MAWP
Equivalent Output 10,350 LB/HR
Heat Output 10,050,000 BTU/HR
Efficiency
(fuel to steam)
87%
Heating Surface Area 574 FT²
Operational Weight 10,940 LBS
Shipping Weight 9,800 LBS
Dimensions Given are Approximate
Width 63 in.
Length 153 1/2 in.
Height 127 in.
Combustion System Proprietary Forced Draft, Step Fired Modulation Hi-Low-Off
Ignition System 4 Position Step Burner (Hi-Low-Ignition-Off)
Power Supply 208, 230, 460, 575V, 3 phase, 60Hz
Max. Electrical Consumption 35.2 KVA
Fuel Type Natural Gas or Propane (3-5 PSIG)
Gas Consumption 11,500 SCFH
Gas Supply Pressure

3-5 PSIG Natural Gas or Propane

Main Steam Outlet Valve 4 in.
Safety Valve Outlet One 1⁄2 in.
Main Water Inlet 1 1⁄4 in.
Fuel Gas Inlet 2 1⁄2 in.
Automatic Surface Blowdown 3⁄8 in.
Manual Blowdown One 1 in. & One 1 1⁄4 in.
Chimney Diameter (ID) 20 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
The drawing illustrated is LX-300 SG


LX-300 SG
A1 A2 A3 B1 B2 B3 H1 H2 h*
39 ½ 16 ½ 21 ½ 95 ½ 57 78 ½ 96 62 68

 

Legend X Y Z Size
A Feedwater Inlet 148 5⁄8 13.9⁄16 8.1⁄2. 1.1⁄2” NPT
B Supply Gas Inlet 148 5⁄8 56.1⁄4 5.1⁄4 2.1⁄2” NPT
C C Safety Valve Outlet 72 5⁄6
87 13⁄16
55.5⁄8 114.15⁄16 2 x 2.1⁄2” NPT
D Steam Outlet 21 13⁄16 50 5⁄8 127 4” 150# Flange
E Button Blow-Off
L. V. Control Blowdown
Automatic Blowdown
148 5⁄8 47 5⁄8 3 1 1⁄4” NPT
F Fuel Gas Outlet 123 3⁄8 13 9⁄16 95 15⁄16 20” I. D. Duct
G Economizer Drain 123 3⁄8 13 9⁄16 31 7⁄16 2” NPT
H Boiler Corner 0 0 0


(Inches)
* Minimum height for Boiler Knock Down


NO. NAME OF PART NO. NAME OF PART
1 MAIN GAS VALVE 17 WATER VALVE
2 MAIN GAS REGULATOR 18 CHECK VALVE
3 GAS CONTROL VALVE 19 CHECK VALVE
4 MAIN GAS ORIFICE 20 FLOW REGULATING VALVE
5 TEST FIRING VALVE 21 SAFETY VALVE
6 PILOT GAS VALVE 22 SAMPLE WATER VALVE
7 PILOT GAS REGULATOR 23 BLOWDOWN CONTROL VALVE
8 PILOT GAS CONTROL VALVE 24 BLOWDOWN STRAINER
9 PILOT GAS ORIFICE 25 BLOWDOWN VALVE
10 PILOT AIR ORIFICE 26 L.V.C. BLOW-OFF VALVE
11 BLOW-OFF VALVE 27 GAS PRESSURE SWITCH
12 PRESSURE SWITCH 28 GAS PRESSURE SWITCH
13 PRESSURE SENSOR 29 AIR PRESSURE SWITCH
14 STEAM PRESSURE SWITCH 30 AIR PRESSURE SWITCH
15 STEAM PRESSURE SWITCH 31 GAS PRESSURE SWITCH
16 STEAM PRESSURE SWITCH 32 AIR CONTROL VALVE
Note
  1. Unless otherwise specified, all items are standard.
  2. This drawing is illustrated with an economizer.
  3. Flanges used are anNsi B16.5 class 150#.
  4. S safety valve size will change for boiler set below 150psig.
  5. Design, specifications and some pipings are subject to change without notice.