When choosing a brass float valve, consider the following factors:
Size and flow rate: Make sure the valve is the right size for your application and can handle the desired flow rate.
Pressure rating: Choose a valve with a pressure rating that matches the system it will be used in.
Connection type: Make sure the valve has the appropriate connection type for your piping system, such as thread, flange, or compression.
Material: Brass is a good choice for most applications due to its durability and resistance to corrosion.
Adjustability: Some valves have adjustable settings, which can be useful for fine-tuning the valve's performance.
Brand reputation: It's always a good idea to choose a reputable brand as it ensures quality and reliability.
Type of application: It's important to choose the valve that is suitable for the application you have in mind. For example, if you need a valve that can handle dirty water, you'll want to choose a valve with a strainer.
It is also important to ensure that you choose a brass float valve that is compliant with any relevant safety and industry standards.