High-Efficiency Hot Water Furnace for Residential and Commercial Use

• 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, the vacuum boiler is adeptly engineered to offer dual hot water outputs. Enjoy the flexibility of obtaining hot water with varied temperature ranges simultaneously through its dual and independent circuit systems. This versatile feature caters seamlessly to diverse needs, whether using a dual-circuit or single-circuit system independently.
High thermal efficiency: Experience unparalleled thermal efficiency with heat exchange that skillfully cycles back and forth within a completely sealed vacuum chamber. Constructed from premium imported stainless steel with outstanding heat transfer properties, our heat exchanger boasts exceptional energy-saving capabilities, ensuring both high performance and eco-friendliness.
Absolute safety: Our boiler is designed with safety as a top priority, operating under constant negative pressure to eliminate explosion risks. Equipped with a suite of sophisticated safety features, including temperature sensors, safety valves, overheat protection, and vacuum control switches, our multi-layer protection system thoroughly addresses all potential safety hazards for ultimate peace of mind.

Intelligent control: With a state-of-the-art digital control system, comprehensive LCD screen, and easy-to-navigate Chinese display, managing your boiler has never been simpler. Set your desired temperature effortlessly, monitor furnace temperature and vacuum levels in real-time, and benefit from automatic record-keeping of combustion times and potential operational issues. The user-friendly interface ensures a hassle-free, hands-off experience.
Eliminate the trouble of registration procedures: Enjoy streamlined operations with our meticulously crafted boiler that functions securely under negative pressure, negating risks of expansion or explosion. Freed from regulatory oversight and inspection requirements, installation is seamless, sparing you the burden of complex registration procedures and optimizing cost efficiency.

Energy saving: Achieve remarkable energy savings due to the minimal quantity of heat medium water. Our innovative system conducts efficient heat exchange within a vacuum chamber using negative pressure steam, rapidly producing warm water at your preset temperature in under ten minutes, reducing preheating losses and maximizing energy efficiency.
Long life: Crafted for longevity, our heat exchanger utilizes top-quality stainless steel renowned for rapid heat transfer and corrosion resistance. Flanged connections on pipe ends facilitate easy maintenance and replacement. The vacuum-sealed furnace body prevents corrosion and scaling, while the bundle of heated tubes remains untouched by flame or flue gas, significantly extending the service life.
Insulation structure: Stay secure and efficient with our robust 100mm double-layer insulation structure that minimizes the boiler's outer touch temperature down to room temperature. This feature not only enhances safety but also significantly boosts the boiler's thermal efficiency for optimal performance.
Imported low-nitrogen burner: Our burner is designed for peak performance, offering high-efficiency combustion, minimal noise, and reduced exhaust emissions. It meets the stringent standards of the nation's top-tier environmental areas, ensuring compliance and sustainability.

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

In 2024, categorization by the rear flue indicates green status, signifying no drawings required under 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

Jiangsu Weifu Special Equipment Co., Ltd. is proudly situated on the bustling Tieta Road, amidst the vibrant surroundings of Guyang Town, in Zhenjiang City's Dantu District.Dedicated to seamlessly integrating boiler marketing resources throughout mainland China, the company utilizes a robust marketing network to effectively convey the distinctive concept, premium quality, competitive pricing, and exceptional service of Weifu's oil, gas, and electricity boilers to its esteemed customers. Embracing the philosophy of 'being a real person and doing things honestly,' the company creates exquisite products that warm the world. Weifu advocates that through its boiler market operations, customers receive genuine value, employees achieve personal growth, shareholders enjoy substantial returns, companies experience thriving development, and the nation benefits from increased tax revenue.
The company employs a skilled workforce of over 200 individuals, including more than 40 professional technicians with diverse expertise. Spanning over 20,000 square meters, the company's state-of-the-art factory buildings boast advanced manufacturing and testing equipment, specializing in the design and production of gas, oil, and electricity-powered hot water boilers, steam boilers, vacuum hot water boilers, and organic carrier boilers.
Driven by the business philosophy of 'what customers need is what we make,' the company focuses on boiler products as its core offering. It has developed an impressive range of vertical and horizontal gas and oil steam boilers, pressure and normal pressure hot water boilers, electric heating steam and hot water boilers, and gas and oil thermal oil boilers, comprising 7 distinct series and nearly 300 specifications. Every Weifu product is designed with cutting-edge clean combustion technology to ensure optimal performance and environmental responsibility. The horizontal pressure boiler body is ingeniously crafted with advanced design structures such as corrugated and conical furnaces, threaded smoke pipes, and the wet back three-pass system, ensuring unparalleled efficacy. The boiler's main engine is expertly fitted with imported burners from renowned brands like Riello, Aucma, Black & Decker, and Weishaupt, delivering unparalleled efficiency, energy savings, and environmental protection. Equipped with pressure or normal pressure economizers and condensers, the boiler significantly reduces exhaust temperature and minimizes dust, nitrogen oxides, and sulfur oxides in the flue gas, promoting heightened energy savings and eco-friendliness. Weifu Boiler stands proudly as a national supplier of small and medium-sized oil, gas, and electric boilers throughout China. Its valued customers are prominently located in major and mid-sized cities across mainland China. Weifu has made significant contributions to environmental protection and energy conservation across mainland China.

Certifications

The company proudly holds a prestigious national Class B manufacturing certificate. In the dynamic boiler market, where opportunities and challenges coexist, Weifu Boiler remains steadfast in its commitment to innovation and development. Our guiding principle, 'creativity for development, credit for cooperation, quality for market share,' ensures that we continually strive for excellence and foster strong partnerships. We are excited to share the exceptional value of Weifu Boiler with you, promising unmatched quality and innovation.

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