D20420-159

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The D20420-159 is a pressure relief valve designed mainly for residential hot water systems. It works by relieving excess pressure that builds up in the system when the water is heated up by the boiler. This helps to prevent damage to the boiler, valves, and pipes in the system.

In order to understand how the D20420-159 works, it is important to understand how pressure works in a hot water system. When a boiler heats up the water, the pressure inside the system increases. If the valve does not regulate this pressure, it can become too high and cause damage to the system. The D20420-159 is designed to open when the pressure inside the system reaches a set point, allowing the excess pressure to be released and preventing any further damage.

The D20420-159 is most commonly used in residential hot water systems, but it can also be used in other applications. It is a relatively inexpensive and reliable valve that is easy to install and maintain. The valve is also self-regulating, meaning that it can adjust itself depending on the pressure inside the system. The valve can be adjusted to handle different pressure levels, making it a versatile and durable choice.

The D20420-159 is made from high-grade brass and brass alloys and is designed to operate in temperatures ranging from -20°F (-28.9°C) to +200°F (93.3°C). It is a durable valve that can withstand high pressures and temperatures. The valve is also easy to install and maintain, making it a cost-effective solution for hot water systems.

The D20420-159 is a versatile pressure relief valve that has many applications in homes and businesses. It can be used to control the pressure in hot water systems in order to prevent system damage and to ensure that the system can operate properly. The valve is easy to install and maintain, making it a cost-effective choice for many applications.

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