Three Pass Boiler Designed for Maximum Efficiency and Durability

• 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 exceptional design and versatile structure, the vacuum boiler stands out with dual hot water outputs. It can deliver hot water simultaneously at different temperatures, employing either a dual-circuit system or a single-circuit system capable of independent operation, meeting diverse needs effortlessly.
High thermal efficiency: Experience unrivaled heat efficiency with our state-of-the-art heat exchanger, engineered from premium imported stainless steel. This superior material ensures an impeccable heat transfer rate within its fully enclosed vacuum chamber, delivering outstanding energy savings and optimal thermal performance.
Absolute safety: Designed for uncompromised safety, the boiler maintains a constant negative pressure during operation, eliminating explosion risks. Equipped with advanced temperature sensors, reliable safety valves, overheat protection, and sophisticated vacuum control switches, it embodies a commitment to comprehensive safety and peace of mind.

Intelligent control: Harness the power of cutting-edge technology with our digital control system, featuring a user-friendly LCD screen with a Chinese display. This sophisticated system allows for customizable temperature settings, real-time monitoring of furnace temperature, vacuum levels, and more. Plus, automatic recording of combustion times and operational faults ensures seamless, hands-free operation.
Eliminate the trouble of registration procedures: Delivered ready-to-use, our boiler operates under negative pressure, eliminating risks of expansion or explosion, and thus bypassing stringent supervision and inspection. Enjoy hassle-free installation and skip the cumbersome registration processes, significantly cutting costs and enhancing convenience.

Energy saving: Experience a breakthrough in energy efficiency with our innovative vacuum chamber technology. By utilizing a minimal amount of heat medium water and engaging in high-efficiency heat exchange with negative pressure steam, the boiler delivers set temperature warm water swiftly within ten minutes, ensuring exceptional energy savings.
Long life: Built with longevity in mind, our heat exchanger features top-grade stainless steel for swift heat transfer and superb corrosion resistance. The flanged pipe connections facilitate easy maintenance, while the vacuum state of the furnace body ensures no corrosion or scaling, prolonging lifespan and maintaining excellent performance.
Insulation structure: Our innovative 100mm double-layer insulation structure minimizes external touch temperatures to ambient levels. This design not only enhances safety but also significantly boosts the boiler's thermal efficiency, ensuring reliable and efficient performance.
Imported low-nitrogen burner: Achieve optimal combustion with our high-efficiency, low-nitrogen burner. It ensures low noise levels and reduced exhaust emissions, meeting stringent environmental standards required by top-tier 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

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 heart of Zhenjiang City, Jiangsu Weifu Special Equipment Co., Ltd. is strategically positioned on Tieta Road, Guyang Town, Dantu District, offering prime access to our cutting-edge facilities.Jiangsu Weifu Special Equipment Co., Ltd. is dedicated to seamlessly integrating boiler marketing resources across mainland China. Through our robust marketing network, we deliver the esteemed Weifu brand experience, highlighting unparalleled quality, competitive pricing, and exceptional service of our oil, gas, and electricity boilers to discerning customers. Embracing the ethos of integrity 'being a real person and doing things honestly', Jiangsu Weifu takes pride in creating superior products that bring warmth and comfort globally. We champion a market approach where customers derive value, employees gain growth, shareholders earn returns, companies achieve advancement, and the nation benefits from tax contributions.
Jiangsu Weifu is powered by a dynamic team of over 200 dedicated professionals, including a skilled assembly of more than 40 technical experts proficient in diverse specializations. Spanning over 20,000 square meters, our state-of-the-art facility is equipped with premium manufacturing and testing technology, specializing in the design and production of sophisticated gas (oil, electricity) hot water boilers, steam boilers, vacuum hot water boilers, and organic carrier boilers.
Driven by our customer-centric philosophy 'what customers need is what we make', Weifu focuses on an extensive range of boiler products as our core, offering vertical/horizontal gas (oil) steam boilers, gas (oil) pressure hot water boilers, electric heating steam boilers, and thermal oil boiler series, encompassing 7 comprehensive series with nearly 300 distinct specifications. Our entire product line proudly features innovative clean combustion technology, ensuring optimal performance with minimal environmental impact. Our horizontal pressure boiler body is designed with advanced structural innovations including corrugated and conical furnaces, threaded smoke pipes, and a sophisticated wet back three-pass system, ensuring peak performance and durability. Equipped with elite imported burners like Riello, Aucma, Black & Decker, and Weishaupt, our boilers excel in efficiency, energy conservation, and environmental preservation, setting a benchmark in the boiler industry. Featuring pressure or normal pressure economizers and condensers, our boilers significantly lower exhaust temperatures and reduce emissions of dust, nitrogen oxides, and sulfur oxides, enhancing energy efficiency and environmental friendliness. Weifu Boiler is proud to be recognized as a leading national supplier of small to medium-sized oil, gas, and electric boilers throughout China. Our expansive clientele network spans major cities across mainland China, reflecting our strong market presence and customer trust. Jiangsu Weifu is a committed contributor to environmental protection and energy efficiency initiatives throughout mainland China, reinforcing our dedication to sustainable development.

Certifications

The company holds a prestigious national Class B manufacturing certificate. In the dynamic boiler market, where opportunities and challenges intertwine, Weifu Boiler is steadfast in its commitment to 'creativity for development, credit for cooperation, quality for market share.' Through this guiding principle, Weifu continuously innovates and collaborates, ensuring top-tier quality that captures market leadership. Discover the exceptional value of Weifu Boiler, and join us in experiencing the advanced technology and reliability that define our legacy.

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