Brass Non-Rising Stem Gate Valve 4" Female NPT x 4" Female NPT Male Size_6 Inch Simply squeeze the handle and

Simply squeeze the handle and rotate to move the inner disc to one of 10 positive detents to control water flow

For example New York City

The opening starts at the top with a 1/2" x 1/2" square and tapers to 9/16" x 9/16" square at the bottom of the opening

See product HS62 for horizontal strainer with back flush cover

The most common size and threads for US fire hydrants is 4 1/2 inch NH / NST

Brass Non-Rising Stem Gate Valve 4" Female NPT x 4" Female NPT Male Size_6 Inch Simply squeeze the handle andBrass Non rising stem wedge disc gate valve 4 inch female NPT to 4 inch female NPT. Features a solid wedge disc and integral seat. WARNING: This product contains a chemical known to the State of California to cause birth defects or other reproductive harm. Do not use in connection with drinking water. Wash hands after handling.