Gas&Oil Vacuum Hot Water Boiler
Rated Hot‑water:
0.35-7 MW
Design Pressure:
-0.02 MPa
Available Fuels:
Natural Gas, LNG, LPG, Oil, Diesel, Dual-fuel, etc.
Manufacturing Standards:
With GB & TSG, ISO, EAC, ASME and CE standard, for export to Asia, Africa, Americas, CIS, etc.
Application Industries:
Widely used for supplying water for central air conditioning, sanitary hot water, hot water processing, etc.
Technological Advantages:
Absolutely safe and as the boiler without explosion forever, space-saving.
Product Introduction
Gas & Oil vacuum hot water boiler operates under negative pressure, making it safe and free from explosion risk. The hot media is completely deoxy purified water, which stays in the vacuum chamber and transfers heat through the heat-exchanging tube and heat exchanger, avoiding corrosion and incrustation and extending the boiler's useful life to 20 years or longer.Gas&Oil Vacuum Hot Water Boiler China Manufacturer
Core Advantages
a. Safe Vacuum Operation: The boiler operates under negative pressure, with an inner absolute pressure of 0.02–0.08 MPa, ensuring safe operation without explosion risk.

b. No Corrosion or Incrustation: The hot media is deoxy purified water, avoiding corrosion and incrustation and extending the boiler's service life.

c. High Thermal Efficiency: The three-pass and wet-back reversal chamber structure with high-quality aluminum silicate insulation reduces heat loss and achieves thermal efficiency up to 92%.

d. Long Service Life: The stainless steel heat exchanger is corrosion resistant with a lifetime of more than 20 years.

e. Multiple Applications: One boiler can be equipped with several heat exchangers for central air conditioning, sanitary hot water, hot water processing and other applications.
Gas&Oil Vacuum Hot Water Boiler Advantages
Specifications
Model Water Volume
(L)
Rated Thermal Power Rated Outlet 
Hot Water Pressure
(bar)
Outlet Hot 
Water Temperature
(℃)
Return Water 
Temperature
(℃)
Fuel Type Shipping Weight
(kg)
Shipping Dimension 
(LxWxH)(mm)
MW BHP
ZWNS0.35-85/60-Y/Q 1340 0.35 36 -0.2 85 60 Natural Gas, LNG, LPG, Biogas, Oil, Diesel, etc 2335 3025x1360x1710
ZWNS0.48-85/60-Y/Q 2000 0.48 49 2640 3025x1360x1720
ZWNS0.6-85/60-Y/Q 2400 0.6 61 2932 3445x1470x1806
ZWNS0.7-85/60-Y/Q 2500 0.7 71 3529 3445x1470x1846
ZWNS1.05-85/60-Y/Q 3250 1.05 107 5104 4060x1580x1976
ZWNS1.4-85/60-Y/Q 3950 1.4 143 5597 4145x1830x2220
ZWNS1.75-85/60-Y/Q 4920 1.75 179 6182 4470x1780x2160
ZWNS2.1-85/60-Y/Q 5950 2.1 214 6947 4510x2000x2398
ZWNS2.8-85/60-Y/Q 7430 2.8 286 8578 5070x2100x2550
ZWNS3.5-85/60-Y/Q 9250 3.5 357 11245 5395x2300x2785
ZWNS4.2-85/60-Y、Q 10340 4.2 428 12061 6000x2300x2785
ZWNS5.6-85/60-Y/Q 12167 5.6 571 14960 6000x2666x3102
ZWNS7-85/60-Y/Q 13986 7 714 19940 6373x2840x3224
Why Choose Us
International Certifications
ISO Quality Management System Certificate
EAC, CU-TR Certificate
EAC, CU-TR Certificate
EN/CE Certificate
ASME-S Certificate
ASME-U Certificate
ISO Environmental Management System Certificate
ISO Occupational Health and Safety Management System Certificate
Advanced Manufacturing
R&D Center

R&D Center

Fully automatic welding

Fully Automatic Welding

Fully automatic tube

Fully Automatic Tube

Steel plate rolling

Steel Plate Rolling

Tube bending

Tube Bending

CNC cutting

CNC Cutting

Large vertical lathe

Large Vertical Lathe

quenching treatment

Quenching Treatment

X-ray flaw detection

X-ray Flaw Detection

Trusted by Customers
XHJ Boiler have established Long-term cooperation with world‑renowned enterprises, and consistently gain high‑level trust and recognition from customers all over the world.
SAPPI

SAPPI

GAZPROM

GAZPROM

ADNOC

ADNOC

COCACOLA

COCACOLA

CDPC

CDPC

SINOPEC

SINOPEC

CNPC

CNPC

CHN ENERGY

CHN ENERGY

BYD

BYD

CP FOOD

CP FOOD

Factory Direct Supply

XHJ Boiler specializes in the R&D, production and sales of boilers, pressure vessels, heat exchange equipment and other related products. Supply customers with one-stop boiler and pressure vessel solutions and have won extensive recognition and positive reviews globally.

20 +
Experience
70 +
Countries
100 +
Engineers
5000 +
Projects

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