What is the maximum pressure of a thermal oil heater?
The circulating pressure of a thermal oil boiler is generated by the driving of the circulating oil pump to the thermal oil circulation. Generally, the working pressure of the thermal oil pump is 4 ~ 8kg / cm2. Actually, the pressure of the thermal oil pump differs from different working conditions.
What are the factors that affect the maximum pressure of thermal oil heater?
1. Pressure of circulating hot oil pump
The pressure of liquid phase thermal oil heater and heating system is determined by the pressure of circulating pump, so the heating mode of thermal oil heater system is forced circulation of liquid phase, and circulating pump plays a "heart" role in the circulation of thermal oil in the whole heating system. If the circulation pump stops running, the circulation of thermal oil will be interrupted.
2. Diameter of oil inlet and outlet
If the inlet and outlet diameter of the oil pump is larger, the pressure of the heat transfer oil will be larger and the oil speed of the thermal oil will be faster, thus ensuring that the thermal oil heater can have a good temperature control effect.
The high working pressure of heat conduction oil furnace indicates that the flow rate of thermal oil in the system is fast. The thermal oil heater should have a large flow rate and a fast flow rate, so that the better the temperature control effect. In the design of heat conduction oil furnace, it is necessary to consider the high-temperature resistance of flanges, valves, pipes, circulating pumps and other components to prevent heat transfer oil from leaking at high temperature.
If you want to know what the maximum pressure of thermal oil heater is under more specific circumstances, or are interested in ZOZEN Boiler, please contact ZOZEN customer service online.
-
YLW series coal-fired thermal oil heaterLive Chat2800-29200 kW0.8-1.0 MPa
-
YQ(Y)W series gas-fired/oil-fired horizontal thermal oil heaterLive Chat1400-14000 kW0.8-1.0 MPa
-
YQ(Y)L series gas-fired/oil-fired thermal oil heaterLive Chat7000-29200 kW0.8-1.0 MPa
-
Email us
-
WhatsApp: +86 18861589035
WeChat: +86 13506150756
Live Chat

-
Against the backdrop of accelerated global carbon reduction and increasingly stringent safety and environmental supervision, internationally recognized compliance qualifications have become an important foundation for industrial equipment manufacturers to expand into overseas markets. With ASME (American Society of Mechanical Engineers) certification as a core cornerstone, ZOZEN Boiler continues to advance the international upgrade of product compliance and engineering service capabilities, driv...13 Jan 2026 -
On January 6, Wuxi ZOZEN Boiler Co., Ltd. held its 2026 Annual Conference and the 2025 Commendation Ceremony for Advanced Teams and Outstanding Employees under the theme “United to Set Out — Uphold Integrity, Advance with Intelligence.” General Manager Zhang Guoping gathered with all employees to review the company’s journey, honor annual contributions, and chart the path forward. Looking back: Steady progress through perseverance and breakthroughsThe conference opened w...07 Jan 2026 -
In 2025, ZOZEN Boiler is leveraging a series of international exhibitions to continue cultivating overseas markets. From Asia’s Pakistan Textile Expo to Europe’s Russian HVAC and Boiler Exhibition and Industrial Boiler & Heat Exchange Exhibition, and onward to Serbia’s TOPS Scientific Seminar, ZOZEN showcased its high-efficiency, eco-friendly boiler products and customized energy solutions to global customers—demonstrating strong technological capability and market co...30 Dec 2025











