ball valve 1/2″ 3/4″ 1″ inch

ball valve with internal (female) thread, two-sided, brass, new, see pictures

DN15 • 1/2″ inch core thread, two-sided (for i.e. heat meters with Qn 0,6)
DN20 • 3/4″ inch core thread, two-sided (for i.e. heat meters with Qn 1,5)
DN25 • 1″ inch core thread, two-sided (for i.e. heat meters with Qn 2,5)