Efficient Low Nitrogen Condensing Hot Water Boilers for Sustainable Heating

• 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: - Our innovative design allows this boiler to serve multiple heating applications simultaneously, ensuring versatility and reliability. Thanks to its unique design and state-of-the-art structure, our vacuum boiler offers dual hot water outputs. It can effortlessly supply hot water at varying temperatures concurrently, whether utilizing a dual-circuit system or a single-circuit system that operates independently.
High thermal efficiency: - Embrace cutting-edge thermal excellence with our advanced heat exchange mechanism, crafted to maximize energy efficiency and minimize wastage. In an entirely sealed vacuum chamber, heat exchange circulates seamlessly. Fabricated from imported stainless steel known for outstanding heat transfer qualities, our heat exchanger guarantees superior efficiency and remarkable energy savings.
Absolute safety: - Your safety is our top priority. Our boiler operates under negative pressure, eliminating explosion risks while being fortified with an array of safety features for ultimate protection. Throughout operation, the boiler maintains a negative pressure state, eliminating explosion risks. Equipped with temperature sensors, safety valves, overheat protection, and vacuum control switches, our multi-layered safety measures address all potential hazards comprehensively.

Intelligent control: - Step into the future with our sophisticated, user-friendly digital control system that offers real-time monitoring and effortless operation. The advanced digital control system, featuring an LCD screen with Chinese display, allows infinite temperature settings while displaying furnace temperature, vacuum degree, and more in real-time. It records combustion time and operational faults automatically, ensuring simple, autonomous operation without human interference.
Eliminate the trouble of registration procedures: - Streamline your setup with our hassle-free, regulation-exempt boiler that cuts through bureaucratic red tape, saving you time and money. Pre-assembled for your convenience, our boiler operates under negative pressure, negating expansion or explosion risks. Bypass complex registration procedures, saving costs and simplifying installation.

Energy saving: - Achieve substantial energy conservation with our efficient design, producing warm water swiftly and with minimal energy loss. By utilizing a limited amount of heat medium water, our boiler leverages negative pressure steam in the vacuum chamber for efficient heat exchange. It generates warm water at the desired temperature within minutes, delivering a significant energy-saving impact without preheating loss.
Long life: - Built to last, our boiler's durable components ensure longevity and sustained performance, providing reliable service for years to come. Engineered with stainless steel for optimal heat transfer and corrosion resistance, the heat exchanger promises rapid, efficient heat transfer. The vacuum-state furnace body remains free of corrosion and scale, with no direct flame or flue gas contact, effectively extending the system's lifespan.
Insulation structure: - Our superior insulation technology raises safety standards while significantly boosting thermal efficiency, creating a safer, more economical heating solution. Featuring a robust 100mm double-layer insulation structure, our boiler reduces external touch temperature to room levels, enhancing safety and significantly improving thermal efficiency.
Imported low-nitrogen burner: - Benefit from high-efficiency combustion with minimal noise and emissions, meeting stringent environmental standards. Our imported low-nitrogen burner delivers efficient combustion while operating quietly with low exhaust emissions, fully compliant with first-class national environmental regulations.

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 - Stay informed with the latest statistics, offering insights into boiler performance and efficiency for the year 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, tailored according to rear flue layouts, features green indicators for setups without drawings in accordance with 120 mg standards.

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. enjoys a strategic location, nestled on Tieta Road in the charming town of Guyang, within the vibrant Dantu District of Zhenjiang City.Our company is dedicated to seamlessly unifying boiler marketing resources across mainland China. Through our extensive marketing network, we elegantly deliver the esteemed Weifu brand's philosophy, superior quality, competitive pricing, and exceptional service for our oil, gas, and electric boilers to our valued customers. Guided by the principle of "integrity in character and honesty in action," Weifu strives to craft exquisite products that bring warmth to the world. We believe in a marketplace where customers receive unparalleled value, employees find growth opportunities, shareholders enjoy dividends, our company thrives, and the nation benefits from increased tax revenues.
Our team boasts a skilled workforce of over 200 dedicated employees, including a remarkable cadre of more than 40 specialized technicians, each an expert in their field. Spanning over 20,000 square meters, our state-of-the-art facility is equipped with advanced manufacturing and testing apparatus. We specialize in the innovative design and production of high-performance gas, oil, and electric hot water boilers, steam boilers, vacuum hot water boilers, and organic carrier boilers.
Embracing a customer-centric business philosophy, "we create what you need," Weifu has developed an impressive array of boiler products. Our portfolio includes vertical and horizontal gas (oil) steam boilers, pressure and normal pressure hot water boilers, electric heating steam boilers, and thermal oil boiler series - an extensive selection across 7 distinct series and nearly 300 specifications. Every Weifu product is crafted with cutting-edge clean combustion technology, ensuring a commitment to sustainability. Featuring innovative design, our horizontal pressure boilers incorporate advanced technologies like corrugated and conical furnaces, threaded smoke pipes, and the efficient wet back three-pass system. Equipped with premium imported burners from renowned brands such as Riello, Aucma, Black & Decker, and Weishaupt, our boilers achieve remarkable efficiency, energy savings, and an environmentally-friendly footprint. Our boilers are enhanced with sophisticated pressure or normal pressure economizers and condensers. These features significantly lower exhaust temperatures and reduce dust, nitrogen oxides, and sulfur oxides concentrations in flue gases, elevating the energy efficiency and eco-friendliness of our products. Weifu Boiler proudly stands as a leading national supplier of small and medium-sized oil, gas, and electric boilers throughout China. Our esteemed clientele spans across major and medium cities throughout mainland China, reflecting our widespread impact. Weifu is proud to contribute meaningfully to the ongoing efforts in environmental protection and energy conservation across mainland China.

Certifications

The company is proud to hold a prestigious national Class B manufacturing certificate. In a dynamic boiler market where opportunities and challenges are ever-present, Weifu Boiler stands resilient. Embracing the guiding principle of 'creativity for development, credit for cooperation, quality for market share,' we are steadfast in our commitment to innovation, trustworthiness, and excellence. We are excited to share the exceptional value and advantages of Weifu Boiler with you.

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