Product Description
One machine for multiple purposes: Ingeniously designed with versatility at its core, this vacuum boiler flaunts dual hot water outputs. Revel in the convenience of dual hot water streams at varying temperatures, perfect for diverse applications. Whether choosing a dual-circuit or single-circuit system, each circuit operates independently, flawlessly catering to a spectrum of heating necessities.
High thermal efficiency: Experience the pinnacle of heat transfer technology with our fully sealed vacuum chamber. Constructed from imported stainless steel renowned for its superb heat conduction, this heat exchanger epitomizes efficiency, ensuring substantial energy savings and showcasing the finest in modern engineering.
Absolute safety: Operational excellence underpins the impeccable safety of this boiler. Maintained under negative pressure to eliminate explosion risks, it comes equipped with comprehensive safety mechanisms such as temperature sensors, safety valves, overheat protection, and vacuum control switches. This thorough attention to safety concerns delivers unparalleled peace of mind.
Intelligent control: Embrace the future of digital control with an intuitive LCD interface in Chinese. Effortlessly manage and monitor temperatures, furnace, and vacuum parameters in real-time. Experience seamless operation with automatic logging of combustion times and faults, paving the way for a world devoid of human intervention.
Eliminate the trouble of registration procedures: Designed for hassle-free operations, this boiler's negative pressure operation eliminates explosion risks, freeing it from stringent supervision. Benefit from an effortless installation process that bypasses tedious registration procedures, thereby enhancing cost efficiency and reducing administrative burdens.
Energy saving: Optimize energy efficiency with a minimized water volume for heat medium. The vacuum chamber's negative pressure steam ensures unparalleled heat exchange, delivering warm water at the set temperature within ten minutes without preheating losses. Observe the impressive energy-saving results.
Long life: Crafted from premium stainless steel, this heat exchanger promises rapid heat transfer and excellent corrosion resistance. Flange connections simplify maintenance, while the vacuum state prevents corrosion and scaling. The isolated heated tube bundle keeps it flame-free, significantly extending its service life.
Insulation structure: Featuring an innovative 100mm double-layer insulation, this boiler effectively minimizes heat loss while keeping its surface at room temperature. This design not only enhances safety but also dramatically boosts thermal efficiency, representing a leap in advanced insulation technology.
Imported low-nitrogen burner: Our burner exemplifies outstanding efficiency, ensuring combustion remains clean and quiet. Emissions are minimized, meeting the stringent standards of top-tier regions nationally, reflecting our commitment to environmental responsibility.


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 the 2024 edition, rear flue statistics underscore our environmental commitment. Green indicators show compliance with 120 mg standards, eliminating the need for additional documentation and highlighting our dedication to sustainable practices.
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., an illustrious hub where precision seamlessly marries innovation. Strategically located on Tieta Road, Guyang Town, Dantu District, Zhenjiang City, we offer an exceptional blend of heritage and advanced technology.At Jiangsu Weifu, we are passionately focused on harmonizing boiler marketing resources throughout mainland China. Our vast and dynamic marketing network guarantees that the distinguished Weifu brand of (oil, gas, electricity) boilers reaches clients nationwide, providing unmatched excellence, competitive pricing, and superior service that sets new industry standards. Operating under the guiding principle of 'being a real person and doing things honestly,' Jiangsu Weifu takes pride in creating extraordinary products that bring warmth to the world. Within our Weifu boiler markets, we are committed to achieving customer delight, fostering employee development, delivering shareholder value, driving corporate expansion, and contributing significantly to national tax revenues.
Our formidable team comprises over 200 dedicated professionals, with more than 40 adept technicians, all working cohesively toward realizing engineering brilliance. Spanning an impressive 20,000 square meters of cutting-edge factory space, we excel in the design and production of advanced gas (oil, electricity) hot water boilers, steam boilers, vacuum hot water boilers, and organic carrier boilers, all underpinned by state-of-the-art manufacturing and testing facilities.
Driven by the ethos 'what customers need is what we make,' we specialize in a diverse range of boiler products. From vertical/horizontal gas (oil) steam boilers to pressure hot water boilers, electric heating steam boilers, and gas (oil) thermal oil boiler series, our offerings encompass 7 series and nearly 300 specifications, continuously setting the benchmark for innovation and quality. Our products are at the pinnacle of innovation, leveraging advanced clean combustion technology to pave the way for a more sustainable future. Our horizontal pressure boilers integrate pioneering design elements, including corrugated furnaces, conical furnaces, threaded smoke pipes, and a durable wet back three-pass configuration, showcasing our dedication to engineering excellence. Our boilers are enhanced with imported burners from renowned brands such as Riello, Aucma, Black & Decker, and Weishaupt, achieving outstanding efficiency, energy savings, and a commitment to environmental stewardship. Incorporating pressure or normal pressure economizers and condensers, our boilers effectively reduce exhaust temperatures and drastically lower emissions of dust, nitrogen oxides, and sulfur oxides, ensuring they are paragons of both energy efficiency and environmental sustainability. Weifu Boiler is proudly recognized as a leading national supplier of small and medium-sized oil (gas, electric) boilers, making a significant impact across China. Our prestigious clientele extends across major cities throughout mainland China, underscoring our extensive reach and influence. We are wholeheartedly committed to leading the charge in environmental protection and energy conservation across mainland China, making a substantial and positive impact.
Certifications
Jiangsu Weifu Special Equipment Co., Ltd. is proud to be a beacon of trust and innovation in the boiler industry, boasting a prestigious national Class B manufacturing certificate. In the ever-evolving and competitive boiler market, where opportunities and challenges abound, we stand tall and resilient. At Weifu Boiler, our unwavering commitment to creativity, integrity, and quality ensures that we consistently lead the way. By focusing on 'creativity for development, credit for cooperation, and quality for market share,' we guarantee our position at the forefront of the industry, delivering unparalleled excellence and reliability. We invite you to journey with Weifu Boiler as we showcase our exceptional value and pioneering spirit. Our dedication to innovation and excellence is reflected in every product and service we offer, ensuring unmatched superiority and satisfaction. Experience the perfect blend of innovation, quality, and service, and discover why Weifu Boiler stands as a pillar of excellence in the industry.
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