zozen boiler
Home Service FAQs Boiler basics What is a pressure-bearing hot water boiler?

What is a pressure-bearing hot water boiler?

18 Nov 2022

Hot water boiler is a kind of thermal equipment that uses natural gas, oil and biomass as fuel to heat water to the rated temperature. It is widely used for heating, bathing and domestic hot water in hotels, schools, hotels, communities and other enterprises and institutions. Generally, pressurized hot water boiler is widely used, so what does pressure-bearing hot water boiler mean?

 

In a pressure-bearing hot water boiler, the meaning of pressure is that the internal pressure of the boiler is higher than the atmospheric pressure from a professional point of view. Moreover, in the standard of Regulations on Safety Supervision of Special Equipment, it refers to the hot water boiler whose internal gauge pressure is greater than 0.1MPa. In addition, what we need to know is that the boiler pressure is maintained by pressure water tank or high-level water tank, not by constant pressure components.

 

The principle of pressure-bearing hot water boiler is that after water enters the boiler, the heating surface of the boiler transfers the absorbed heat to the water supply, so that the water is heated into hot water with a certain temperature and pressure, which is led out and transported to the heat exchange station for heat exchange, and the boiler return water is transported to the inlet of the circulating water pump through the return pipe.

 

The pressure boiler is always full of water during operation, so there is no water level gauge, but a pressure gauge, safety valve and thermometer must be installed. The circulating water pump of the heating system of the pressure-bearing hot water boiler generally adopts the fresh water pump, which not only needs to overcome the circulating resistance of the system, but also needs to maintain a certain pressure of the boiler to ensure that the hot water does not vaporize at high temperature. The pressurized hot water boiler can supply both low-temperature water and high-temperature hot water.

 

Performance parameters of pressure-bearing hot water boiler

ZOZEN pressure-bearing hot-water boiler has a full range of models, including gas-fired hot-water boiler, oil-fired hot-water boiler, biomass hot-water boiler and coal-fired hot-water boiler, with a single capacity of 0.7-116MW. Among them, the gas-fired hot-water boiler is widely used in the field of central heating because of its high efficiency, energy saving, environmental protection, full-automatic intelligent control and other characteristics, and has become the unanimous choice for heating in enterprises such as China Renmin University, Tianjin Thermal Power, Beiran Group and Railway Administration.

Related FAQs View More
Related news View More
  • ZOZEN Boiler Achieves Outstanding Results at Overseas Exhibitions in the First Half of 2025
    In the first half of 2025, as a leading enterprise in China’s industrial boiler sector, ZOZEN Boiler has actively expanded into global markets with an international vision and innovative drive. The company made impressive appearances at the Pakistan Textile Exhibition and the Russian HEAT&ELECTRO MACHINERY Expo, continuously expanding its brand influence and bringing efficient, environmentally friendly energy solutions to customers worldwide, contributing to the green upgrade of the in...
    01 Jul 2025
  • ZOZEN Tri-Drum Biomass Boiler Empowers Green and Efficient Development of the Fish Meal Industry
    In Weihai, Shandong, the fish meal industry serves as a vital pillar of the local economy, now facing increasingly fierce market competition. Amid this landscape, enterprises are eager for energy solutions that are not only efficient and eco-friendly but also cost-effective. At this crucial moment, the ZOZEN triple drum biomass boiler has made a strong entrance, opening new paths for the local fish meal enterprises. ZOZEN Triple Drum Biomass Boiler: Paving a New Way for Fish Meal Enterprises ...
    24 Jun 2025
  • ZOZEN Biomass Boiler Revitalizes the Plastic Foam Industry
    As global attention toward sustainable development intensifies, green and eco-friendly practices have become the main theme across all industries. For traditionally high-energy, high-emission sectors, technological innovation is essential to achieve clean production and unlock new growth. The plastic foam industry, a vital part of industrial manufacturing, has long faced the dual challenges of high energy consumption and environmental pressures. The emergence of biomass boilers offers a new gree...
    17 Jun 2025

Find the Right Boiler For You

Name *

Email *

WhatsApp/WeChat

Products

Power/Capacity