SM FS004: Fuel sample valve. many racing organizations require you to check a fuel sample.
Important that you have a spring loaded valve. I won't go into the details of the
fire at this years WinterNationals, suffice to say, it almost took out an "Original Aluminum Front End 63 Plymouth"
not to mention no one was hurt.
Please NO Radiator type valves or other lo-buck fixes.
This LSM valve like all of their products is a quality piece, small, light weight, push-button
operation, Normally closed no drip valve, stainless steel spring
Locate the sample valve after the regulator and away from headers