Seraphin^® Test Measures is pleased to introduce our newest additions - The Seraphin Slip-on with prover is a mobile proving system designed to calibrate gasoline and diesel fuel dispensers.  It is comprised of (3) precision volumetric stainless steel bottom drain special J provers connected each to their own individual 80 gallon SS holding tank with  a 60 Gallon Series J prover  is installed above the holding tanks for testing high speed diesel dispensers.  The 80 gallon configuration allows for up to 48 (5-gallon) or 4 (60 Gallon) calibration tests before returning to the fuel station's storage tank for dumping. The prover drain valve is plumed to piping via butterfly valves to the gravity drain.