Advanced Low Nitrogen Condensing Hot Water Boilers for Eco-Friendly Solutions

• 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: With a uniquely engineered design, our vacuum boiler offers dual hot water outputs, allowing simultaneous provision of hot water at different temperatures. Utilize the dual-circuit system or the single-circuit system independently for flexible operation.
High thermal efficiency: Crafted from premium imported stainless steel, our heat exchanger operates within a fully sealed vacuum chamber. This ensures exceptional heat transfer efficiency, leading to remarkable energy savings and superior heat exchange performance.
Absolute safety: Operating under constant negative pressure, our boiler poses no explosion risk. Equipped with advanced safety features like temperature sensors, safety valves, overheat protection, and vacuum control switches, it meticulously addresses all potential safety concerns.

Intelligent control: Featuring sophisticated digital controls with an LCD screen displaying in Chinese, our system allows customizable temperature settings. Real-time data on furnace temperature, vacuum degree, and more are conveniently displayed, with automatic recording of combustion times and error alerts for seamless, unattended operation.
Eliminate the trouble of registration procedures: Pre-assembled and operating under negative pressure, our boiler bypasses the need for complicated registration processes. Free from expansion or explosion risks, it is exempt from supervisory inspections, effectively minimizing installation costs.

Energy saving: Our boiler's minimal heat medium water requirement, combined with vacuum chamber heat exchange, delivers rapid water heating to your set temperature within just ten minutes, drastically reducing energy consumption and eliminating preheating loss.
Long life: Constructed with stainless steel for optimal heat transfer and corrosion resistance, our heat exchanger is both robust and easy to maintain due to its flange connections. The vacuum state prevents corrosion and scaling, while the non-contact heated tube bundle ensures an extended service life.
Insulation structure: Incorporating a 100mm double-layer insulation design, our boiler maintains external touch temperatures at room level. This not only enhances safety but also significantly boosts the boiler's thermal efficiency.
Imported low-nitrogen burner: Experience efficient combustion with minimal noise and reduced exhaust emissions, perfectly aligning with the standards of top-tier national 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

2024 version according to the rear flue, green means no drawings according to 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 hub of Tieta Road, Guyang Town, Dantu District, Zhenjiang City, Jiangsu Weifu Special Equipment Co., Ltd. stands as a beacon of engineering excellence and innovation.Jiangsu Weifu Special Equipment Co., Ltd. is at the forefront of revolutionizing boiler marketing across mainland China. Through an expansive network, we seamlessly deliver the unmatched concept, superior quality, competitive pricing, and exceptional service of Weifu's (oil, gas, electricity) boilers to a discerning clientele. Rooted in the philosophy of 'being a real person and doing things honestly', Weifu is dedicated to crafting superior products that warm the world. Our mission is to ensure that, in the dynamic landscape of Weifu boiler marketing, customers experience true value, employees find growth, shareholders gain benefits, companies achieve development, and the nation enjoys increased tax revenue.
With a dynamic team of over 200 professionals, including 40+ skilled technicians across various specializations, Jiangsu Weifu Special Equipment Co., Ltd. is poised for excellence. Boasting over 20,000 square meters of state-of-the-art facilities and cutting-edge manufacturing and testing equipment, our company specializes in the innovative design and production of gas (oil, electricity) hot water boilers, gas (oil, electricity) steam boilers, vacuum hot water boilers, and organic carrier boilers.
Guided by the principle 'what customers need is what we make', Weifu's core focus remains on boiler products. Our expansive portfolio includes vertical/horizontal gas (oil) steam boilers, pressure hot water boilers, electric heating steam boilers, thermal oil boiler series, and more-comprising seven series with nearly 300 distinct specifications. All of our meticulously engineered products integrate advanced clean combustion technology, setting new benchmarks for environmental responsibility. Our horizontal pressure boiler design incorporates pioneering features like corrugated furnaces, conical furnaces, threaded smoke pipes, and wet back three-pass structures, ensuring optimal performance and reliability. Equipped with high-performance burners from renowned brands such as Riello, Aucma, Black & Decker, and Weishaupt, our boilers deliver unparalleled efficiency, energy savings, and eco-friendliness. Our advanced boilers, fitted with economizers and condensers, remarkably lower exhaust temperatures and reduce dust, nitrogen oxides, and sulfur oxides in flue gas, thereby enhancing both energy efficiency and environmental sustainability. Weifu Boiler proudly holds the title of a national leader in supplying small and medium-sized oil (gas, electric) boilers throughout China. Our esteemed clientele spans major and medium-sized cities across mainland China, cementing our reputation as a trusted partner in energy solutions. Jiangsu Weifu Special Equipment Co., Ltd. continues to make significant strides in promoting environmental stewardship and energy conservation across mainland China.

Certifications

With a prestigious national Class B manufacturing certificate in our repertoire, Jiangsu Weifu Special Equipment Co., Ltd. stands at the forefront of the dynamic boiler market, where opportunities and challenges are in perfect harmony. At Weifu Boiler, we steadfastly adhere to our guiding principles: 'creativity for development, credit for cooperation, and quality for market share.' These pillars form the foundation of our commitment to excellence and innovation. We are excited to share the unparalleled value of Weifu Boiler with you, offering industry-leading solutions designed to exceed expectations and fuel growth.

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