Adapts 6 inch threaded top of tank openings and reduces to 4" x 8 NPT female Thread. PN CH2695-10
Allows use of 4" thread commercial valves to be used on commercial size tanks with 6 inch thread top opening.
Comes with one o-ring ( on bottom / tank side, as shown in 2nd photo ).
If you want a new o-ring for the thread valve connection, order it separately.
Not for use with Flanged tanks or Flanged valves.
SPECIAL ORDER ITEM - 2 to 3 week lead time and NON-RETURNABLE
So, be sure this is the item you need before you place your order.