High-Performance Low Nitrogen Condensing Hot Water Boilers for Modern Needs

• 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: Ingeniously designed with versatility at its core, this vacuum boiler flaunts dual hot water outputs. Experience simultaneous provision of dual hot water streams with differing temperatures. Whether opting for a dual-circuit or single-circuit system, each circuit operates independently, catering seamlessly to diverse heating needs.
High thermal efficiency: Experience superior heat transfer in this vacuum chamber, entirely sealed to perfection. Crafted from imported stainless steel, known for its exemplary heat conduction, our heat exchanger maximizes efficiency and ensures substantial energy savings-a true testament to modern engineering.
Absolute safety: Operational excellence underpins safety with this boiler, perpetually maintained under negative pressure to negate explosion risks. Equipped with comprehensive safety: temperature sensors, safety valves, overheat protection, and vacuum control switches. It thoroughly addresses potential safety concerns, offering peace of mind.

Intelligent control: Harness the power of advanced digital control with an intuitive LCD interface displaying in Chinese. Effortlessly set temperatures, monitor furnace and vacuum parameters in real-time, and rely on automatic logging of combustion times and faults. Simplified operations facilitate a world where no human intervention is required.
Eliminate the trouble of registration procedures: Designed to streamline, this boiler's negative pressure operation eradicates expansion or explosion risks, exempting it from stringent supervision. Enjoy a hassle-free installation, bypassing tedious registration procedures, thus optimizing cost efficiency and reducing administrative burdens.

Energy saving: Maximize energy efficiency through minimized heat medium water volume. The vacuum chamber's negative pressure steam boasts unparalleled heat exchange, delivering set-temperature warm water within ten minutes, devoid of preheating losses. Witness the remarkable energy-saving outcomes.
Long life: Constructed from top-tier stainless steel, this heat exchanger guarantees quick heat transfer and robust corrosion resistance. Flange connections simplify maintenance, while the vacuum state precludes corrosion and scaling. The isolated heated tube bundle avoids flame contact, prolonging service life considerably.
Insulation structure: Featuring a 100mm double-layer insulation, this boiler minimizes heat loss, maintaining its surface at room temperature. This not only enhances safety but also significantly boosts its thermal efficiency, epitomizing advanced insulation technology.
Imported low-nitrogen burner: Our burner operates with remarkable efficiency, ensuring combustion is clean and quiet. Emissions are kept minimal, aligning perfectly with the strict standards demanded by premier regions nationally.

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

For the 2024 edition, rear flue statistics reflect environmental consciousness, with green indicating compliance to 120 mg standards without the need for additional drawings.

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

Welcome to Jiangsu Weifu Special Equipment Co., Ltd., ideally situated on Tieta Road, Guyang Town, Dantu District, Zhenjiang City, where precision meets innovation.Jiangsu Weifu is unwaveringly devoted to unifying boiler marketing resources across mainland China. Our extensive marketing network ensures that the esteemed Weifu (oil, gas, electricity) boilers reach customers, delivering unparalleled quality, competitive pricing, and exceptional service. Guided by the philosophy of 'being a real person and doing things honestly,' we at Jiangsu Weifu pride ourselves on crafting superior products that warm the world. In our Weifu boiler markets, we strive for customer satisfaction, employee advancement, shareholder benefits, corporate growth, and national tax contributions.
Our team consists of over 200 dedicated professionals, including more than 40 expert technicians, all working cohesively towards engineering excellence. With a sprawling 20,000 square meters of state-of-the-art factory space, we specialize in crafting and designing advanced gas (oil, electricity) hot water boilers, steam boilers, vacuum hot water boilers, and organic carrier boilers, supported by cutting-edge manufacturing and testing equipment.
Embracing the business credo 'what customers need is what we make,' we focus on diverse boiler products, developing vertical/horizontal gas (oil) steam boilers, pressure hot water boilers, electric heating steam boilers, and gas (oil) thermal oil boiler series, spanning 7 series and nearly 300 specifications. Our products are at the forefront of innovation, utilizing clean combustion technology to ensure a sustainable future. Our horizontal pressure boilers boast advanced design elements like corrugated furnaces, conical furnaces, threaded smoke pipes, and a robust wet back three-pass configuration, epitomizing engineering prowess. Equipped with imported burners from leading brands such as Riello, Aucma, Black & Decker, and Weishaupt, our boilers achieve remarkable efficiency, energy conservation, and environmental protection. Integrated with pressure or normal pressure economizers and condensers, our boilers lower exhaust temperatures and minimize emissions of dust, nitrogen oxides, and sulfur oxides, ensuring they are both energy-efficient and environmentally friendly. Weifu Boiler proudly stands as a premier national supplier of small and medium-sized oil (gas, electric) boilers across China. Our esteemed clientele is spread across major cities throughout mainland China, a testament to our widespread impact. We are committed to spearheading environmental protection and energy conservation efforts across mainland China, making a tangible difference.

Certifications

The company proudly holds a prestigious national Class B manufacturing certificate, standing resilient in a dynamic boiler market where opportunities and challenges are ever-present. At Weifu Boiler, we are steadfast in our commitment to 'creativity for development, credit for cooperation, and quality for market share,' ensuring we remain at the forefront of the industry. Join us as we share the exceptional value and pioneering spirit of Weifu Boiler with you, offering unmatched excellence in every product and service.

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