Gas boilers release heat through combustion, heating water into hot water or steam, which can then be used for heating, providing warmth, bathing, production, and other purposes. In a gas boiler system, valves play a crucial and pivotal role. They cooperate with the boiler control components to ensure the safe and stable operation of the boiler. Now, let’s take a look at the types of boiler valves and their pictures, and understand what functions they have.
1. Safety Valve
In a boiler, the safety valve is a type of valve used for safety protection. Its opening and closing parts are normally closed under the action of external force. When the medium pressure in the equipment or pipeline rises and exceeds the specified value, the safety valve will automatically open, discharging the medium to the outside of the system to prevent the medium pressure in the pipeline or equipment from exceeding the specified value. The safety valve belongs to the category of automatic valves.
Precautions: The boiler safety valve should be manually discharged at least once every six months. Each operation should open it 3 to 4 times, and each time should last for 3 to 4 seconds. When manually discharging steam, the steam pressure should preferably be 75% of the maximum pressure.
2. Globe Valve
The globe valve in a boiler is used for cutting off, regulating, and throttling. The globe valve only allows the medium to flow in one direction, and its installation has a specific directionality.
3. Check Valve
The check valve, also known as a one-way valve or non-return valve, is used to prevent the medium in the pipeline from flowing backward.
4. Blowdown Valve
The quick blowdown valve is evolved from a gate valve. It uses the rotation of a gear by 90° to drive the valve stem to lift, achieving the opening and closing of the valve.
Distribution of Boiler Valves
1. Three Types among the Four Major Safety Accessories:The safety valve, blowdown valve (gate valve), and water level gauge (water column gauge).
2. Feed Water System: Gate valve, check valve, safety valve, and blowdown valve.
3. Steam System: Globe valve, ball valve (plunger valve), blowdown valve, safety valve, and steam trap.
Note: After the boiler arrives at the site, the user should carefully check each piece of equipment and every valve according to the types and pictures of the boiler valves listed in the delivery list to ensure that all equipment is complete. For more detailed information about boiler valves and boilers, you can visit https://www.hanyuboiler.com/.
