28mm 3 Port Valve

In heating, ventilation and air conditioning (HVAC) systems, 2-port valves and 3-port valves are commonly used control valves for regulating fluid flow and temperature control. They have different functions and designs and are suitable for different application scenarios.

 

Product parameters

●Valve body material: forged brass
●Valve stem material: brass
●Seal material: nitrile rubber (NBR)
●Working medium: cold/hot water
●Fluid temperature: 5~95℃
●Pressure: 1.6MPa
●Ambient temperature: 0~65C Maximum relative humidity is non-condensing
●Travel time: 11~15 seconds
●Motor torque: >800gf.cm

2-port valve

 

The 2-port valve has only two connection points, one inlet and one outlet. Its main function is to simply open or close the flow of fluid, similar to a switch. It is often used in simple switch control systems, such as radiators in heating systems. It can accurately control the flow of liquid or gas in a single path to start and stop the heating or cooling system.

3-port valve

 

The 3-port valve has three connection points, one inlet and two outlets, or vice versa. Its main function is to distribute fluid into two different paths, or to collect fluid from two different paths. It is often used in mixing circuits or diversion circuits in heating systems, such as hot water switching or temperature control zone systems in boiler systems. It can flexibly adjust and control the heating or cooling needs of multiple areas or equipment.

 

 Selection suggestions
2-port valves are suitable for systems that require simple on-off control.
3-port valves are suitable for multi-circuit or complex zone control systems, providing more flexible flow direction adjustment.
These two valves work together in HVAC systems to ensure efficient operation of the system in different occasions.

Q1.What is the effect of zone valves with different pipe diameters on system flow?
The pipe diameter of the zone valve directly affects the flow and performance of the system. Valves with different pipe diameters will change the flow rate, flow rate and pressure of the liquid or gas in the system, which will affect the efficiency of heating, cooling and the overall system.

Q2.What are the maintenance requirements?
28mm three-port valves are generally less maintained, but it is recommended to regularly check the valve's sealing performance and fluid control effect. For electric valves, it is necessary to check whether the electric actuator is working properly to ensure that the valve can accurately open and close according to system instructions.

Q3.What is the difference between 28mm 3 port valve and other sizes of valves?

28mm 3 port valves are suitable for HVAC systems with medium flow, while other sizes (such as 15mm, 22mm) are suitable for small or large systems. The size of the valve should be adjusted according to the system pipe diameter and flow requirements to ensure smooth fluid flow and optimal system efficiency.

Q4.How to determine the correctness of the installation position?
The appropriate flow direction needs to be selected according to the specific function. Usually, the valve is marked with inlet and outlet markings to ensure that the fluid flows in the designed direction. Incorrect installation will cause the system to not work properly or make some areas unable to heat or cool properly.

Q5.What systems are the 3 port valve suitable for?

Commonly used in floor heating systems, radiator heating, boiler systems and regional temperature control systems in HVAC systems. It can flexibly control the heating or cooling of multiple areas to ensure efficient operation of the system.

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