Three Pass Hot Water Furnace with Exceptional Thermal Performance

• 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
• Package Size: 700.00cm * 800.00cm * 1350.00cm
• Package Gross Weight: 220.000kg

Product Description

Product Description

One machine for multiple purposes: Revolutionary in its design and structure, the vacuum boiler features the versatility of dual hot water outputs, allowing it to provide water at different temperatures concurrently. With the dual-circuit system or a single-circuit system operable independently, customization has never been so accessible.
High thermal efficiency: Experience unrivaled thermal performance with our heat exchanger system, where heat circulates back and forth within a fully sealed vacuum chamber. Constructed from imported stainless steel materials, it boasts exceptional heat transfer capabilities, ensuring high efficiency and noteworthy energy savings.
Absolute safety: Our boiler operates in a perpetual state of negative pressure, eliminating explosion risks. Equipped with multiple safety measures such as temperature sensors, safety valves, overheat protection, and vacuum control switches, it prioritizes safety at every level.

Intelligent control: Featuring an advanced digital control system with an LCD screen and Chinese display, it allows for customizable temperature settings. Real-time monitoring of furnace temperature, vacuum degree, and other parameters is effortlessly displayed, while automatic recording of combustion time and faults simplifies operations, enabling unmanned operation.
Eliminate the trouble of registration procedures: Our boiler is delivered fully assembled and runs under negative pressure, negating expansion or explosion risks, thus exempting it from supervision and inspection. This streamlined installation process alleviates the complexities of registration with functional departments, minimizing your costs effectively.

Energy saving: Our system's efficient heat exchange, facilitated by a minimal amount of heat medium water in a vacuum chamber with negative pressure steam, quickly achieves the set temperature within ten minutes, eliminating preheating losses and delivering remarkable energy savings.
Long life: Crafted from stainless steel known for its superior heat transfer and corrosion resistance, our heat exchanger ensures rapid heat transfer and durability. Flanged connections at pipe ends simplify maintenance, while the vacuum state of the furnace body prevents corrosion and scaling, extending the service life without flame or flue gas contact.
Insulation structure: The innovative 100mm double-layer insulation structure decreases the boiler's external touch temperature to room levels, enhancing safety and drastically improving thermal efficiency.
Imported low-nitrogen burner: Our burner offers high-efficiency combustion with low noise and minimal exhaust emissions, meeting the stringent requirements of first-class environmental areas in the country.

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, adhering to rear flue guidelines, features a green status with no requirement for drawings and complies with the 120 mg standard.

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 Zhenjiang City, Jiangsu Weifu Special Equipment Co., Ltd. can be found at Tieta Road, Guyang Town, Dantu District, where innovation meets excellence.Jiangsu Weifu Special Equipment Co., Ltd. is passionately focused on weaving a seamless network of boiler marketing resources across mainland China. Through our robust marketing network, we eloquently communicate the unrivaled value, superior quality, competitive pricing, and exemplary service of our Weifu oil, gas, and electricity boilers to our cherished clientele. Guided by the noble ethos of 'living with integrity and crafting with honesty,' we at Jiangsu Weifu are dedicated to producing fine products that bring warmth to the world. We proudly champion a business model where customer satisfaction is paramount, employee growth is nurtured, shareholder benefits are maximized, corporate development is accelerated, and national tax revenue is optimally contributed.
With a dynamic team of over 200 dedicated employees, including an elite group of more than 40 skilled professional technicians, our company thrives on expertise and innovation. Spanning over 20,000 square meters, our state-of-the-art factory premises are equipped with cutting-edge manufacturing and testing facilities. We specialize in the sophisticated design and production of gas (oil, electricity) hot water boilers, steam boilers, vacuum hot water boilers, and organic carrier boilers, setting industry standards for excellence.
Driven by the visionary business philosophy of 'creating what our customers desire,' our focal point remains on premier boiler products. We have meticulously developed an extensive range of vertical and horizontal gas (oil) steam boilers, normal pressure and pressure hot water boilers, electric heating steam boilers, and thermal oil boilers. Our portfolio boasts 7 comprehensive series and nearly 300 tailored specifications. All our meticulously crafted products are designed with an unwavering commitment to clean combustion technology, ensuring sustainable and responsible operation. Our horizontal pressure boiler bodies are ingeniously designed with advanced structures, including corrugated and conical furnaces, threaded smoke pipes, and the innovative wet back three-pass system, embodying efficiency and sophistication. Delivering unparalleled performance, our main boiler units are equipped with top-tier imported burners from renowned brands such as Riello, Aucma, Black & Decker, and Weishaupt, achieving remarkable efficiency, unparalleled energy savings, and uncompromised environmental protection. Our boilers are outfitted with state-of-the-art pressure or normal pressure economizers and condensers, effectively minimizing exhaust temperatures and significantly reducing dust, nitrogen oxides, and sulfur oxides emissions, promoting energy efficiency and environmental stewardship. Weifu Boiler proudly stands as a national leader in the supply of small and medium-sized oil, gas, and electric boilers throughout China, shaping the future of sustainable energy solutions. Our customer base is strategically positioned across major and medium-sized cities within mainland China, reinforcing our commitment to excellence and reach. We are fervently dedicated to the cause of environmental protection and energy conservation, making a profound impact across mainland China.

Certifications

The company proudly holds a prestigious national Class B manufacturing certificate. In the dynamic boiler market, where opportunities and challenges dance in tandem, Weifu Boiler remains steadfast to its guiding principle: 'Creativity for development, credit for cooperation, quality for market share.' This unwavering commitment fuels our ambition to lead and innovate. We are excited to share the unparalleled value and innovation that Weifu Boiler brings, ensuring every interaction is infused with our dedication to 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