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: Marvel at the superior heat transfer capabilities of this precision-engineered vacuum chamber, which is meticulously sealed to ensure peak performance. Crafted from premium imported stainless steel, renowned for its outstanding heat conduction properties, our advanced heat exchanger not only maximizes thermal efficiency but also achieves remarkable energy savings. This is a true testament to the cutting-edge prowess of modern engineering.
Absolute safety: Experience unrivaled operational safety with this boiler, expertly designed to operate under perpetual negative pressure to eliminate explosion risks. Equipped with a comprehensive suite of safety features, including temperature sensors, safety valves, overheat protection, and vacuum control switches, it thoroughly addresses every potential safety concern, ensuring peace of mind and security.
Intelligent control: Embrace the future with our state-of-the-art digital control system, featuring an intuitive LCD interface in Chinese. Effortlessly set desired temperatures, monitor furnace and vacuum parameters in real time, and benefit from automatic logging of combustion times and faults. This high-tech solution simplifies operations, creating a seamless experience where human intervention becomes unnecessary.
Eliminate the trouble of registration procedures: Enjoy seamless convenience with this boiler's negative pressure operation, which eliminates the risks of expansion or explosion, thus exempting it from stringent regulatory oversight. Experience hassle-free installation and circumvent tedious registration procedures, ultimately optimizing cost efficiency and minimizing administrative burdens.
Energy saving: Unlock the pinnacle of energy efficiency with our innovative design that minimizes the volume of heat medium water. The vacuum chamber's unrivaled negative pressure steam ensures rapid heat exchange, delivering set-temperature warm water in under ten minutes, entirely free from preheating losses. Witness the remarkable outcomes of this exemplary energy-saving performance.
Long life: Built from superior stainless steel, this high-performance heat exchanger ensures rapid heat transfer and exceptional corrosion resistance. With flange connections that simplify maintenance and a vacuum state that prevents corrosion and scaling, the isolated heated tube bundle is safeguarded from flame contact, significantly extending the boiler's operational lifespan.
Insulation structure: Boasting a 100mm double-layer insulation, this boiler minimizes heat loss superbly, maintaining its surface at room temperature. This not only enhances safety but also dramatically boosts thermal efficiency, embodying the pinnacle of advanced insulation technology and ensuring optimal performance.
Imported low-nitrogen burner: Our cutting-edge burner stands out with its remarkable efficiency, delivering clean and quiet combustion. Emissions are kept to an absolute minimum, aligning perfectly with the stringent standards demanded by premier regions nationally, ensuring environmentally conscious operation.


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, the rear flue statistics reflect a commitment to environmental consciousness, showcasing compliance with the 120 mg standards without necessitating additional drawings, marking a new era of green compliance.
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., a beacon of precision and innovation strategically located on Tieta Road, Guyang Town, Dantu District, Zhenjiang City.Jiangsu Weifu is passionately committed to streamlining boiler marketing resources throughout mainland China. Our extensive and strategic marketing network ensures that our prestigious Weifu (oil, gas, electricity) boilers reach our valued customers, offering them unparalleled quality, competitive price points, and outstanding service. Guided by our core philosophy of 'being a real person and doing things honestly,' Jiangsu Weifu is proud to craft superior products that bring warmth and comfort to the world. In our Weifu boiler markets, we aim for excellence in customer satisfaction, employee development, shareholder value, corporate growth, and contributions to national revenue.
Our team boasts over 200 dedicated professionals, including more than 40 expert technicians, all working in harmony to achieve engineering excellence. Spanning a vast 20,000 square meters of state-of-the-art factory space, we specialize in the crafting and designing of advanced gas (oil, electricity) hot water boilers, steam boilers, vacuum hot water boilers, and organic carrier boilers, all supported by cutting-edge manufacturing and testing equipment.
Embracing the business philosophy 'what customers need is what we make,' we are focused on offering a diverse range of boiler products. Our portfolio includes the development of vertical/horizontal gas (oil) steam boilers, pressure hot water boilers, electric heating steam boilers, and gas (oil) thermal oil boiler series, encompassing 7 series and nearly 300 specifications. Our pioneering products lead the industry with innovative designs, utilizing clean combustion technology to ensure a sustainable and greener future. Our horizontal pressure boilers are engineered with advanced design features, such as corrugated furnaces, conical furnaces, threaded smoke pipes, and a robust wet back three-pass configuration, epitomizing superior engineering expertise. Equipped with imported burners from premier brands such as Riello, Aucma, Black & Decker, and Weishaupt, our boilers achieve exceptional efficiency, energy conservation, and environmental protection. Embedded with pressure or normal pressure economizers and condensers, our boilers significantly lower exhaust temperatures and minimize emissions of dust, nitrogen oxides, and sulfur oxides, ensuring they are both energy-efficient and eco-friendly. Weifu Boiler proudly stands as a leading national provider of small and medium-sized oil (gas, electric) boilers throughout China. Our esteemed clientele, spread across major cities in mainland China, is a testament to our extensive reach and widespread impact. We are fervently committed to leading environmental protection and energy conservation initiatives throughout mainland China, making a meaningful and tangible impact.
Certifications
Jiangsu Weifu Special Equipment Co., Ltd. proudly holds a prestigious national Class B manufacturing certificate. In a dynamic and evolving boiler market, where opportunities and challenges intertwine, this certification stands as a testament to our unwavering dedication to quality and innovation. At Weifu Boiler, our commitment is unshakable: creativity fuels our development, trust anchors our partnerships, and exceptional quality ensures our market leadership. This philosophy keeps us solidly at the industry's forefront, offering assurance and reliability to our valued partners and clients. Join us in experiencing the exceptional value and pioneering spirit that define Weifu Boiler. We offer unmatched excellence in every product and service, inviting you to become part of a journey characterized by superior quality, innovation, and integrity. Discover the distinctive edge that our high-performance boilers bring to the table, designed to meet the modern demands with precision and care.
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