AMT Flat bed trailer

[Madd Trucker]

I am   building  the   Freuhauf    flat  bed  trailer   and     wondering  what  is  on  two   of  the  air  tanks    are  they   abs  moduals    I  want to  get this  trailer  finished

[Jim B]

The defiantly are not ABS modules as the AMT Fruehauf flatbed trailer is 1970s vintage.  They are air relay valves.

[Ben]

It's an air valve.

[Madd Trucker]

thanks   Ben  I  know  of  those   valves    but     was  wondering    what  are  the ones  molded  to two  of   the  air  tanks   sorry  I  didn't     reply  sooner  have  been  very   busy    with   real  life