The FlushDaddy Long Life Bottom Entry Fill Valve with 1/2" brass thread is a type of toilet fill valve designed to replenish the water in a toilet cistern after each flush.

Here's a breakdown of its features:

Bottom Entry: This means the valve is installed at the bottom of the toilet cistern, where water enters. This type of installation is common in toilets where the water supply line comes from the bottom of the cistern.

Adjustable Height: This feature allows the valve to be customized for different toilet cistern sizes. This makes it versatile and adaptable to various toilet models.

1/2" Brass Thread: The valve has a 1/2-inch brass thread connection, which is a standard size for most toilet water supply lines. Brass is often used because it is corrosion-resistant and strong.

This type of valve helps maintain a consistent water level in the toilet cistern by automatically refilling the cistern after the flush. It also ensures that the water supply is properly controlled and can adjust to the needs of the toilet cistern's water level.