Innovative Hot Air Boiler with High Efficiency and Smart Controls

• Customization: Available
• Function: Water Boiler, Steam Boilers, Hot Water Boiler
• Fuel: Oil-Fired
• Model NO.: ZKW series
• Installation: Bulk Boiler
• Structure: Fire Tube
• Media: Hot Water
• Water Circulation: Forced Circulation
• Drum Placement: Horizontal Boiler
• Pressure: Pressure
• Manufacturing Level: B
• Burning Style: Chamber Combustion Boiler
• Usage: Industrial, Power Station
• Wooden Packaging: 1
• Delivery Time: 30 Days
• Free Samples: No
• Feature: Customized
• Transport Package: Wooden Packaging
• Specification: Customized
• Trademark: Weifu
• Origin: Jiangsu

Product Description

Product Description

One machine for multiple purposes: Thanks to its special design and unique structure, the vacuum boiler features dual hot water outputs, providing water at different temperatures simultaneously. It utilizes a versatile dual-circuit system or a single-circuit system, allowing independent operation for each circuit, delivering unmatched flexibility and efficiency.
High thermal efficiency: Within a completely sealed vacuum chamber, the heat exchange process circulates thoroughly. Crafted from high-quality imported stainless steel with exceptional heat transfer capabilities, the heat exchanger boasts outstanding efficiency, resulting in significant energy savings and an enhanced thermal performance that stands out.
Absolute safety: Operating under constant negative pressure, the boiler eliminates explosion risks. It is fortified with advanced safety features including temperature sensors, safety valves, overheat protection, and vacuum control switches, ensuring comprehensive safety against potential hazards at all times.

Intelligent control: Equipped with sophisticated digital controls and an LCD screen with a Chinese display, the system is at the forefront of technological advancement. Users can freely set temperatures, view real-time data on furnace temperatures, vacuum levels, and other parameters, while automatic logging of combustion time and faults simplifies operations, making unattended operation a breeze.
Eliminate the trouble of registration procedures: Delivered fully equipped and operational under negative pressure, the boiler circumvents expansion or explosion risks, exempting it from regulatory supervision and inspection, thus liberating you from the onerous registration processes with relevant authorities and keeping operational costs to a minimum.

Energy saving: With a minimal water volume for heat medium, the boiler's vacuum chamber facilitates highly efficient heat exchange using negative pressure steam. This process rapidly produces warm water at the set temperature within just ten minutes, eliminating preheating losses and achieving remarkable energy-saving results.
Long life: Constructed with stainless steel for optimal heat transfer and corrosion resistance, the heat exchanger ensures fast heat transfer. Flange connections at pipe ends make maintenance and replacements simple. The vacuum state of the furnace body prevents corrosion or scaling, extending the service life by protecting the heated tube bundle from flames or flue gases.
Insulation structure: Featuring a 100mm double-layer insulation structure, the boiler minimizes its external touch temperature to match room temperature, boosting safety and dramatically enhancing thermal efficiency, making it a standout in energy conservation.
Imported low-nitrogen burner: Engineered for high-efficiency combustion, this burner operates with low noise and minimizes exhaust emissions, complying with the stringent standards of first-class environmental zones.

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

Statistics by boiler flue in 2024

	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

Reflecting 2024 updates, the rear flue design meets green compliance standards without drawings, adhering to 120 mg specifications.

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

Main Products

Company Profile

Jiangsu Weifu Special Equipment Co., Ltd. proudly stands at Tieta Road, Guyang Town, in the vibrant Dantu District of Zhenjiang City.We are passionately dedicated to uniting boiler marketing resources across mainland China. Our dynamic marketing network serves as the conduit through which the esteemed Weifu brand—renowned for oil, gas, and electricity boilers—delivers unmatched concepts, superior quality, competitive pricing, and exceptional service to our valued clients. Embodying our core values of integrity and authenticity, we are committed to crafting exquisite products that truly warm the world. At Weifu, we champion a market operation philosophy where our customers receive tangible value, employees experience personal and professional growth, shareholders enjoy financial rewards, our company achieves sustainable development, and the nation benefits from increased tax contributions.
Our talented team boasts over 200 dedicated professionals, including more than 40 highly skilled technicians across various specializations. Spanning over 20,000 square meters, our state-of-the-art manufacturing facilities are equipped with cutting-edge production and testing technology. We excel in the innovative design and production of gas, oil, and electrically-powered hot water boilers, steam boilers, vacuum hot water boilers, and organic carrier boilers.
Guided by the philosophy that 'what customers need is what we make,' Weifu has meticulously developed an extensive range of boiler products as our core offerings. Our portfolio includes vertical and horizontal gas (oil) steam boilers, vertical gas (oil) normal and high-pressure hot water boilers, and an array of electric heating steam and hot water boilers. With a comprehensive selection of seven series covering nearly 300 specifications, we address diverse needs. Our entire product line proudly incorporates advanced clean combustion technology, setting new benchmarks for sustainability. Our expertly crafted horizontal pressure boiler designs feature state-of-the-art structures including corrugated furnaces, conical furnaces, threaded smoke pipes, and wet back three-pass systems, ensuring unparalleled efficiency and performance. We outfit our boilers with premium imported burners from industry leaders like Riello, Aucma, Black & Decker, and Weishaupt, resulting in peak efficiency, significant energy savings, and an eco-friendly footprint. Our boilers are equipped with pressure or normal pressure economizers and condensers, significantly lowering exhaust temperatures. This innovation reduces dust, nitrogen oxides, and sulfur oxides in the flue gas, further enhancing energy efficiency and environmental friendliness. Weifu Boiler proudly ranks as a distinguished national supplier of small to medium-sized oil, gas, and electric boilers across China. Our extensive customer base spans the major urban landscapes of mainland China, proving our trusted reach and influence. We take pride in our substantial contributions to environmental protection and energy conservation throughout mainland China.

Certifications

The company holds a prestigious national Class B manufacturing certificate. In the dynamic and competitive boiler market, where opportunities and challenges walk hand in hand, Weifu Boiler stands strong, guided by its core principles: 'Creativity fosters development, credit builds cooperation, and quality conquers market share.' Join us in experiencing the immense value that Weifu Boiler is set to bring into your world.

Packaging & Shipping

FAQ

1. How to buy a good boiler?

A: Choose a good supplier.

B: Specification is clear, steam or hot water, capacity,fuel,pressure and so on

C:Price is not the only problem, quality and service also important.

2. What is your main product?

A:Steam boiler, hot water boiler and thermal oil boiler.Gas fired boiler, oil fired boiler, diesel fired boiler, coal fired boiler, biomass fired boiler,Industry boiler and so on.

3. Q: How long is your lead time?

A: Generally it is 30 days, depends on your needs and project scales