Clack Residential Brine Safety Valve ( B.S.V. ) 3/8 inch connection ( Jaco Nut ) to brine tubing ( for 3/8" O.D. tubing )
but Used with 1/2" brine pick up tube ( attaching by 1/2" Jaco Nut ).
and a connection is provided for the float rod.
NOTE: MOST Residential brine systems use 3/8" tubing and Pick Up Tube also 3/8" and NOT the 1/2" size.