Reliable Low Nitrogen Condensing Hot Water Boilers with Fast 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: Thanks to its innovative design and advanced structure, our vacuum boiler masterfully delivers dual hot water outputs. It seamlessly supplies dual hot water with distinct temperature variations concurrently. Utilizing either a dual-circuit system or a single-circuit system, it operates with remarkable independence and versatility.
High thermal efficiency: Experience unparalleled efficiency with a heat exchange process that circulates efficiently within an entirely sealed vacuum chamber. Constructed from premium imported stainless steel, this heat exchanger boasts exceptional heat transfer efficiency, ensuring remarkable energy savings and superior performance.
Absolute safety: Operating safely in a constant negative pressure state, this boiler eliminates explosion risks. It comes equipped with an array of safety features including temperature sensors, safety valves, overheat protection, and vacuum control switches. These multi-layer safety measures thoroughly address and mitigate potential safety concerns.

Intelligent control: Featuring cutting-edge digital control with an intuitive LCD screen displaying in Chinese, our advanced control system allows for effortless temperature customization. Real-time display of furnace temperature, vacuum levels, and other parameters simplifies operation. It automatically logs combustion times and operating faults, ensuring hassle-free, unattended operation.
Eliminate the trouble of registration procedures: Delivered fully assembled and operating under negative pressure, this boiler avoids any expansion or explosion risks, exempting it from mandatory supervision and inspection. Installation is straightforward, bypassing the cumbersome registration procedures of functional departments, significantly minimizing costs and maximizing convenience.

Energy saving: With minimal heat medium water, our vacuum chamber conducts highly efficient heat exchange using negative pressure steam, rapidly producing warm water at the desired temperature within ten minutes, all without preheating loss. The result is a substantial energy-saving impact that sets new standards for efficiency.
Long life: Crafted from stainless steel for optimal heat transfer and corrosion resistance, this heat exchanger ensures swift heat conduction and durability. With flange-connected pipe ends, maintenance and replacements are effortless. Maintaining a vacuum state prevents corrosion and scale, with heated tube bundles protected from flame or flue gas exposure, significantly prolonging its service life.
Insulation structure: Incorporating a robust 100mm double-layer insulation structure, our boiler minimizes external touch temperature to room level, enhancing safety and dramatically improving thermal efficiency, setting a new benchmark for boiler performance.
Imported low-nitrogen burner: Employing a high-efficiency combustion process, our low-nitrogen burner operates with minimal noise and reduced exhaust emissions, fully compliant with the stringent standards of the country's premier regions.

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 version based on rear flue design, coded green, signifies compliance without drawings, achieving emission levels below 120 mg.

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 vibrant heart of Zhenjiang City, Jiangsu Weifu Special Equipment Co., Ltd. calls the industrious Tieta Road, Guyang Town, Dantu District, its home.Jiangsu Weifu Special Equipment Co., Ltd. stands at the forefront of innovation, seamlessly integrating boiler marketing resources across mainland China. Through an extensive network, Weifu delivers the unmatched trinity of concept, quality, and service in their oil, gas, and electricity boilers, all at competitive pricing. Steadfast in our guiding principle of "being a real person and doing things honestly," our mission is to craft exquisite products that bring warmth around the globe. At Weifu, we ensure that our operations translate into tangible value for customers, developmental growth for employees, rewarding returns for shareholders, corporate evolution, and significant tax contributions to the nation.
With a dedicated workforce of over 200 individuals, including an elite team of more than 40 expert technicians, Jiangsu Weifu is a powerhouse of industry expertise. Occupying an impressive expanse of over 20,000 square meters, our state-of-the-art facilities are equipped with cutting-edge manufacturing and testing technology. We specialize in the design and production of a wide array of boilers: gas, oil, and electricity hot water boilers, steam boilers, vacuum hot water boilers, and organic carrier boilers, setting benchmarks in excellence.
Embracing the ethos of 'what customers need is what we make,' Weifu has curated an extensive portfolio of boilers. Our offerings include vertical and horizontal gas, oil steam boilers, normal pressure and pressure hot water boilers, electric heating steam and hot water boilers, and gas/oil thermal oil boiler series, totaling 7 series with nearly 300 specifications. Every Weifu product is a testament to our commitment to clean combustion technology, prioritizing environmental sustainability. Our horizontal pressure boiler designs incorporate sophisticated features: corrugated furnaces, conical furnaces, threaded smoke pipes, and wet back three-pass systems, setting a new standard in boiler engineering. Partnering with renowned global brands like Riello, Aucma, Black & Decker, and Weishaupt, our boilers' main engines epitomize high efficiency, remarkable energy-saving, and eco-friendly performance. Enhanced with pressure or normal pressure economizers and condensers, our boilers significantly lower exhaust temperatures while efficiently reducing dust, nitrogen oxides, and sulfur oxides in flue gases, making them paragons of energy efficiency and environmental guardianship. Weifu Boiler proudly stands as a national leader, providing small to medium-sized oil, gas, and electric boilers throughout China. Our esteemed clientele spans the vast expanse of mainland China, from bustling metropolises to thriving mid-sized cities. Through pioneering technology, we have made impactful contributions to environmental protection and energy conservation across China.

Certifications

Jiangsu Weifu Special Equipment Co., Ltd. proudly possesses a prestigious national Class B manufacturing certificate. In the dynamic and ever-evolving boiler industry, where opportunities abound and challenges are met head-on, Weifu Boiler remains steadfast in its commitment. We embrace 'creativity for development,' ensuring we stay ahead of the curve. By valuing 'credit for cooperation,' we forge strong partnerships, and with an unwavering focus on 'quality for market share,' we deliver exceptional solutions. We are excited to invite you to explore and experience the remarkable value that Weifu Boiler has to offer. Join us in our journey of excellence.

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