
High thermal efficiency: The heat exchange is circulated back and forth in a completely closed vacuum chamber. Because it is made of imported stainless steel materials with extremely high heat transfer efficiency, The heat exchanger has high heat exchange efficiency and significant energy saving effect.
Absolute safety: The boiler is always in a negative pressure state during operation, and there is no risk of explosion. It is equipped with temperature sensors, safety valves, overheat protection and vacuum control switches and other multi-layer protection measures to take all aspects of potential safety hazards into consideration.
Eliminate the trouble of registration procedures: The boiler is shipped complete and operates under negative pressure. There is no possibility of expansion or explosion and it is not subject to supervision and inspection. During installation, you can be exempted from the complicated registration procedures of the functional departments, thus reducing your costs as much as possible.


Long life: The heat exchanger is made of stainless steel with the best heat transfer effect, which has fast heat transfer and corrosion resistance; the pipe ends are connected with flanges for easy maintenance and replacement.The furnace body is in a vacuum state, and there is no corrosion or scale. The heated tube bundle does not come into contact with the flame or flue gas, and relatively extends the service life.
Insulation structure: The 100mm double-layer insulation structure is adopted to reduce the external touch temperature of the boiler to room temperature, which not only increases safety but also greatly improves the thermal efficiency of the boiler.
Imported low-nitrogen burner: high-efficiency combustion, low noise, low exhaust emissions, in line with the requirements of the first-class areas of the country.
Gas Vacuum Hot Water Boiler (120mg) Parameter Table | |||||||||
Modal | Unit | ZKW0.35-65/55-Q.Y | ZKW0.47-65/55-Q.Y | ZKW0.58-65/55-Q.Y | ZKW0.7-65/55-Q.Y | ZKW0.94-65/55-Q.Y | ZKW1.05-65/55-Q.Y | ZKW1.2-65/55-Q.Y | |
Rated thermal power | KW | 350 | 480 | 580 | 700 | 940 | 1050 | 1200 | |
Rated heat output | Kcal/h | 300,000 | 400,000 | 500,000 | 600,000 | 800,000 | 900,000 | 1,000,000 | |
Boiler design thermal efficiency | % | 94~96 | |||||||
Rated working pressure | Mpa | -0.085 | |||||||
Heat exchanger working pressure | Mpa | 1.25 | |||||||
Rated heating supply t=10 | Outlet/return water temperature | ºC | 65/55 | ||||||
Circulating water volume | t/h | 30 | 40 | 50 | 60 | 80 | 90 | 100 | |
Water supply and return diameter | DN | 65 | 80 | 80 | 100 | 125 | 125 | 125 | |
Fuel consumption | 0# Light diesel | kg/h | 32.5 | 53.7 | 53.7 | 64.5 | 85.6 | 95.6 | 154.5 |
Natural gas | Nm³/h | 38.4 | 64.5 | 64.5 | 77.1 | 102.7 | 114.5 | 129.5 | |
Flue size | mm | φ250 | 350*220 | 350*220 | φ320 | φ330 | φ350 | φ412 | |
Shipping Weight | KG | 2600 | 3000 | 3000 | 3300 | 4500 | 4200 | 4500 | |
Dimensions | Length | mm | 2620 | 3000 | 3000 | 3200 | 3640 | 3700 | 3650 |
Width | mm | 1350 | 1600 | 1600 | 1470 | 1770 | 1840 | 1860 | |
Height | mm | 2040 | 2000 | 2000 | 2220 | 2250 | 2160 | 2250 |
Modal | Unit | ZKW1.4-65/55-Q.Y | ZKW1.75-65/55-Q.Y | ZKW2.1-65/55-Q.Y | ZKW2.8-65/55-Q.Y | ZKW3.5-65/55-Q.Y | ZKW4.2-65/55-Q.Y | ZKW4.9-65/55-Q.Y | ZKW7.0-65/60-Q.Y | ||
Rated thermal power | KW | 1400 | 1750 | 2100 | 2800 | 3500 | 4200 | 4900 | 7000 | ||
Rated heat output | Kcal/h | 1,200,000 | 1,500,000 | 1,800,000 | 2,400,000 | 3,000,000 | 3,600,000 | 4,200,000 | 6,000,000 | ||
Boiler design thermal efficiency | % | 94~96 | |||||||||
Rated working pressure | Mpa | -0.085 | |||||||||
Heat exchanger working pressure | Mpa | 1.25 | |||||||||
Rated heating supplyt=10 | Outlet/return water temperature | ºC | 65/55 | ||||||||
Circulating water volume | t/h | 120 | 150 | 180 | 240 | 300 | 360 | 420 | 600 | ||
Water supply and return diameter | DN | 125 | 200 | 200 | 150 | 200 | 200 | 250 | 300 | ||
Fuel consumption | 0# Light diesel | kg/h | 137.6 | 166.9 | 197.7 | 316.5 | 316.5 | 392.6 | 442.3 | 627.1 | |
Natural gas | Nm³/h | 152.9 | 200.2 | 230.3 | 305.6 | 379.7 | 471.2 | 530.7 | 752.5 | ||
Flue size | mm | 420*300 | 440*300 | 600*280 | 460*460 | 640*430 | 760*380 | 760*460 | 760*550 | ||
Shipping Weight | KG | 5150 | 5800 | 7300 | 7350 | 11100 | 11100 | 15100 | 17100 | ||
Dimensions | Length | mm | 3750 | 4000 | 4600 | 5000 | 5220 | 5400 | 6050 | 6800 | |
Width | mm | 1700 | 2000 | 2100 | 1900 | 2300 | 2300 | 2500 | 2700 | ||
Height | mm | 2380 | 2420 | 2550 | 2660 | 2900 | 2900 | 3180 | 3660 |
Gas vacuum hot water boiler (30 mg) parameter table | |||||||||
Modal | Unit | ZKW0.35-65/55-Q.Y | ZKW0.47-65/55-Q.Y | ZKW0.58-65/55-Q.Y | ZKW0.7-65/55-Q.Y | ZKW0.94-65/55-Q.Y | ZKW1.05-65/55-Q.Y | ZKW1.2-65/55-Q.Y | |
Rated thermal power | KW | 350 | 480 | 580 | 700 | 940 | 1050 | 1200 | |
Rated heat output | Kcal/h | 300,000 | 400,000 | 500,000 | 600,000 | 800,000 | 900,000 | 1,000,000 | |
Boiler design thermal efficiency | % | 94~96 | |||||||
Heat exchanger working pressure | Mpa | 1.25 | |||||||
Rated working pressure | Mpa | -0.085 | |||||||
Rated heating supply t=10 | Outlet/return water temperature | ºC | 65/55 | ||||||
Circulating water volume | t/h | 30 | 40 | 50 | 60 | 80 | 90 | 100 | |
Water supply and return diameter | DN | 65 | 65 | 80 | 100 | 100 | 125 | 125 | |
Fuel consumption | 0# Light diesel | kg/h | 30.2 | 40.2 | 49.8 | 60.5 | 80.6 | 95.6 | 127.6 |
Natural gas | Nm³/h | 34.5 | 48.2 | 56.5 | 68.4 | 91.2 | 114.5 | 106.3 | |
Flue size | mm | φ250 | 350*220 | 350*220 | φ320 | 380*280 | 380*280 | φ412 | |
Shipping Weight | KG | 2030 | 3500 | 3500 | 3800 | 4000 | 4500 | 4600 | |
Dimensions | Length | mm | 2500 | 3100 | 3100 | 3400 | 3400 | 3700 | 3480 |
Width | mm | 1600 | 1800 | 1800 | 1670 | 2000 | 1670 | 1670 | |
Height | mm | 2160 | 2200 | 2200 | 2520 | 2550 | 2450 | 2410 |
Modal | Unit | ZKW1.4-65/55-Q.Y | ZKW1.75-65/55-Q.Y | ZKW2.1-65/55-Q.Y | ZKW2.8-65/55-Q.Y | ZKW3.5-65/55-Q.Y | ZKW4.2-65/55-Q.Y | ZKW5.6-65/55-Q.Y | ZKW7.0-65/60-Q.Y | |
Rated thermal power | KW | 1400 | 1750 | 2100 | 2800 | 3500 | 4200 | 5600 | 7000 | |
Rated heat output | Kcal/h | 1,200,000 | 1,500,000 | 1,800,000 | 2,400,000 | 3,000,000 | 3,600,000 | 4,800,000 | 6,000,000 | |
Boiler design thermal efficiency | % | 94~96 | ||||||||
Heat exchanger working pressure | Mpa | 1.25 | ||||||||
Rated working pressure | Mpa | -0.085 | ||||||||
Rated heating supply t=10 | Outlet/return water temperature | ºC | 65/55 | |||||||
Circulating water volume | t/h | 120 | 150 | 180 | 240 | 300 | 360 | 480 | 600 | |
Water supply and return diameter | DN | 150 | 200 | 150 | 150 | 250 | 250 | 300 | 300 | |
Fuel consumption | 0# Light diesel | kg/h | 128.2 | 160.2 | 193.5 | 252.7 | 317.8 | 380.3 | 483.84 | 627.1 |
Natural gas | Nm³/h | 152.6 | 190.7 | 227.33 | 304.4 | 381.3 | 456.4 | 547.2 | 752.5 | |
Flue size | mm | 420*300 | 580*400 | 500*330 | 460*460 | 640*430 | 686*430 | 760*550 | ||
Shipping Weight | KG | 6600 | 7200 | 7300 | 10040 | 11100 | 12100 | 13800 | 17100 | |
Dimensions | Length | mm | 3850 | 4050 | 4400 | 5000 | 5470 | 5610 | 6250 | 6800 |
Width | mm | 1760 | 1920 | 2100 | 2100 | 2250 | 2400 | 2650 | 2700 | |
Height | mm | 2540 | 2660 | 2750 | 2920 | 2980 | 3060 | 2150 | 3660 |





