1. Appearance

  • Horizontal saddle-based industrial design
  • Symmetric screw/smooth heat tubes; easy-access inspection ports & doors
  • Clean ivory-white exterior

2. Efficiency & Performance

  • 3-pass wet-back design with efficiency up to 90%
  • Top-fed water prevents scaling & extends service life
  • Large furnace + steam storage for stable load adaptability

3. Safety & Control

  • Multi-level water level protection
  • Full interlock safety system (pressure, temp, burner, explosion-proof)
  • Factory-integrated with reliable imported burners/pumps

4. Applications

Ideal for industrial steam needs in textiles, food, pharmaceuticals, chemical, and other industries
Horizontal gas three return steam boiler

Gas-Fired steam boiler (120mg)

Parameter Unit WNS0.75-0.7-QY WNS1.0-0.7-QY WNS1.0-1.0-QY NWNS1.0-1.25-QY WNS1.5-1.0-QY WNS2.0-1.0-QY WNS2.0-1.25-QY WNS2.0-2.45-QY WNS3.0-1.25-QY
Rated Temperature ℃ 170 170 184 184 184 184 193 204 193
Heating Area (with Economizer) m² 17.5+15.4 20.42+14.9 20.42+14.9 20.35+15.49 33.14+16.2 45.5+21.5 5.5+21.5 44.1+26.1 72.44+30.46
Boiler Water Capacity m³ 2.22 2.5 2.5 2.5 3.96 5 5 5.6 7.1
Flue Size mm Φ300 Φ300 Φ300 Φ300 Φ380 Φ420 Φ420 Φ460 Φ500
Feed Water Inlet DN 40 40 65 25 65 40 80 80 50
Main Steam Outlet DN 65 65 65 65 65 80 80 80 100
Safety Valve Inlet DN 40*2 25 50 50 40 40 40 40 40
Sewage Outlet DN 40 40 40 40 40 40 40 40 40
Fuel Consumption (Light Oil) kg/h 50.8 67.2 67.4 67.8 102.2 132.6 133.7 137.7 204
Fuel Consumption (Natural Gas) Nm³/h 61.1 81.1 81.3 81.4 120.1 161 158.3 156.8 243.9
Transport Weight kg 3100 4000 4300 4500 4800 7000 7000 7400 8400
Overall Dimension – Length mm 2900 3100 3100 3100 3750 3850 3850 3800 4600
Overall Dimension – Width mm 1700 1700 1700 1700 1950 2100 2100 2100 2200
Overall Dimension – Height mm 2000 2000 2000 2000 2250 2350 2350 2400 2550

 

Parameter Unit WNS4.0-1.0-QY WNS4.0-1.25-QY WNS4.0-1.6-QY WNS5.0-1.25-QY WNS5.0-1.6-QY WNS6.0-1.25-QY WNS6.0-1.6-QY WNS8.0-1.25-QY WNS8.0-1.6-QY
Rated Temperature ℃ 184 193 204 193 204 193 204 193 204
Heating Area (with Economizer) m² 80.37+43.4 84.3+48.3 84.3+35.2 110.5+46.5 110.5+46.5 142.1+20.84 142.1+40.9 190.2+80.5 191.8+74.4
Boiler Water Capacity m³ 7.54 7.6 7.54 8.9 8.9 5 13.9 13.9 14
Flue Size mm Φ520 Φ500 Φ500 750×410 750×140 Φ420 Φ600 Φ750 Φ940×520
Feed Water Inlet DN 40 50 100 50 50 40 50 50 50
Main Steam Outlet DN 100/40 100 100/40 125/40 125/40 80 125 150 150/40
Safety Valve Inlet DN 50*2 50/40 50/40 2×50 2×50 40 65 65 2×65
Sewage Outlet DN 40 40 40 40 40 40 65 40 40
Fuel Consumption (Light Oil) kg/h 266.3 269.8 270.1 335.4 335.4 132.6 401.9 624.5 548.2
Fuel Consumption (Natural Gas) Nm³/h 320.4 324.3 321.2 395.2 395.2 161 488.5 624.5 624.4
Transport Weight kg 8300 9300 9850 11200 11250 7000 13800 18000 19200
Overall Dimension – Length mm 4900 4900 4900 5250 5250 3850 5800 6600 6500
Overall Dimension – Width mm 2300 2200 2300 2350 2350 2100 2500 2600 2600
Overall Dimension – Height mm 2650 2660 2650 2680 2680 2350 2850 3050 2850