13/16" Top Distributor .010 - .013 Glue type Screen. Used on many Autotrol Valves before the Twist On Valve design.
And before the distributor pipe / valve openings became 1.05" O.D. ( around 1997 for Autotrol 255 ).
Mostly used on the older Autotrol 155 valves ( as they all had the smaller 13/16" O.D. distributor pipe ).
NOW AN OBSOLETE PART - NONE LEFT IN STOCK
While PVC cement can be used to assemble the part to the Valve, the manufacturer recommends using MEK ( Methyl Ethyl Ketone ), sometimes called Butanone, which can be usually be found near the Turpentine section of large hardware stores. This is not a "glue" but a "solvent" that will "melt" the two plastics enough to allow you to "fuse" the two pieces ( Distributor and Valve Body ) together.
Sets up fast ( in less than 30 seconds )
so apply to the wide opening of the Distributor -- AND -- to the Valve Body,
THEN put the pieces together quickly.
Hold firmly together for 1 minute, and they should be "glued" together from that point on.