By Pass used on Autotrol ( 263, 268 ) Performa Series Valves and the Technetics 1100 ( but not earlier Technetics ).
By Pass is called the 1265 ( part # 1040930 ).

Includes ( 2 ) gaskets (old PN# 54F ) for the connection to the Valve side.

You may want to purchase  2  gaskets ( 54F - 1030541 ) for "house" side adapter nuts to insure a leak free seal.

You need adapters to connect to the "house" side of this By Pass.
Sold separately. See related products for sale.

Note: This does not work with older Autotrol 163 or 168 valves.
Nor does it work with the Autotrol 155 or 255 Valves.