Durable Low Nitrogen Condensing Hot Water Boilers with Timely Delivery

• 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: Ingeniously crafted for versatility, our vacuum boiler showcases an innovative design and structural excellence. It offers dual hot water outputs, enabling the provision of two distinct temperature levels simultaneously. Whether you opt for the dual-circuit or the independent single-circuit system, flexibility is at your fingertips.
High Thermal Efficiency: Experience unparalleled thermal performance with our heat exchanger, which operates within a completely sealed vacuum chamber. Constructed from high-grade imported stainless steel, it delivers superior heat transfer efficiency, resulting in remarkable energy savings and high heat exchange efficiency.
Absolute Safety: Safety is paramount, and our boiler excels in this area by consistently maintaining a negative pressure state during operation, thereby eliminating explosion risks. It is fortified with an array of protective features including temperature sensors, safety valves, overheat protection, and vacuum control switches, ensuring comprehensive safety management.

Intelligent Control: Our state-of-the-art digital control system is a blend of innovation and simplicity, featuring an LCD screen with a user-friendly Chinese display. Temperature settings can be customized, while real-time data on furnace temperature, vacuum degree, and more, are effortlessly monitored. It logs combustion times and operational anomalies, offering seamless, operator-free functionality.
Eliminate Registration Hassles: Shipped as a compact unit operating under negative pressure, our boiler circumvents the need for extensive supervision and inspection. This design innovation exempts you from cumbersome registration processes, thereby minimizing costs and simplifying installation.

Energy Saving: Our boiler redefines energy efficiency by utilizing a minimal amount of heat medium water. The negative pressure steam in the vacuum chamber facilitates rapid heat exchange, achieving the desired water temperature within just ten minutes and eliminating preheating loss. This results in outstanding energy-saving performance.
Long Life: Constructed with stainless steel for optimal heat transfer and corrosion resistance, our heat exchanger promises swift heat conduction and durability. The flange-connected pipe ends offer easy maintenance, while the vacuum state of the furnace body ensures freedom from corrosion or scale, significantly extending the boiler's lifespan.
Insulation Structure: Our boiler boasts a 100mm double-layer insulation structure that keeps the external touch temperature at room level. This not only enhances safety but also substantially boosts the boiler's thermal efficiency.
Imported Low-Nitrogen Burner: Our burner sets the standard for environmental efficiency with high-performance combustion, minimal noise, and ultra-low exhaust emissions, meeting the stringent requirements of the nation's top-tier emission standards.

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

The 2024 model, with its rear flue design, epitomizes eco-friendliness, ensuring compliance with the latest green standards, including the 120 mg limit without the need for additional drawings.

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

Nestled in the heart of Guyang Town, Dantu District, Zhenjiang City, Jiangsu Weifu Special Equipment Co., Ltd. is a beacon of innovation and quality.Dedicated to harmonizing boiler marketing resources across mainland China, Weifu skillfully channels its esteemed concepts, superior quality, competitive pricing, and exceptional services through an extensive marketing network for Weifu (oil, gas, electricity) boilers, reaching discerning customers nationwide. Guided by the noble principle of 'being a real person and doing things honestly,' the company crafts exquisite products that bring warmth to the world. In the vibrant ecosystem of Weifu's boiler market operations, customers realize immense value, employees achieve substantial growth, shareholders enjoy fruitful benefits, the company experiences robust development, and the nation gains valuable tax revenue.
With a team of over 200 dedicated professionals, including more than 40 specialized technicians, the company is a powerhouse of talent and expertise. Boasting over 20,000 square meters of state-of-the-art factory space equipped with cutting-edge manufacturing and testing machinery, the company specializes in the innovative design and manufacture of gas (oil, electricity) hot water boilers, steam boilers, vacuum hot water boilers, and organic carrier boilers, tailored to meet diverse needs with precision and reliability.
Embracing the philosophy of 'what customers need is what we make,' the company focuses on exquisite boiler products as its core offerings. It has engineered a comprehensive range, including vertical/horizontal gas (oil) steam boilers, normal pressure/pressure hot water boilers, and electric heating boilers, culminating in 7 robust series featuring nearly 300 meticulously crafted specifications. All Weifu products proudly incorporate cutting-edge clean combustion technology. The sophisticated design of the horizontal pressure boiler body integrates advanced structures like the corrugated furnace, conical furnace, threaded smoke pipe, and wet back three-pass, ensuring unparalleled performance and efficiency. Equipped with elite imported burners from industry leaders such as Riello, Aucma, Black & Decker, and Weishaupt, the boilers achieve exemplary efficiency, energy conservation, and environmental protection. With the inclusion of state-of-the-art economizers and condensers, either pressure or normal pressure, the boilers significantly lower exhaust temperatures and diminish dust, nitrogen oxides, and sulfur oxides in the flue gas, making them the epitome of energy efficiency and environmental responsibility. Weifu Boiler has firmly established itself as a premier national supplier of small and medium-sized oil (gas, electric) boilers throughout China. Our esteemed clientele spans across large and medium-sized cities in mainland China, testifying to our expansive reach and trusted reputation. Contributing significantly to environmental protection and energy conservation, Weifu Boiler stands as a pillar of sustainable development in mainland China.

Certifications

The company Holds a national Class B manufacturing certificate, a testament to our unwavering commitment to excellence. In the dynamic boiler market, where opportunities and challenges coexist, Weifu Boiler stands firm on the principle of 'creativity for development, credit for cooperation, quality for market share.' This guiding philosophy ensures our position as a trusted leader, delivering innovation and reliability. Join us on a journey as we share the unparalleled value of Weifu Boiler with you, where every interaction is an opportunity to experience dedication and quality.

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