The Febco 876VST is a double check detector assembly (DCDA). It is available in 2 1/2″-10″ sizes and production began in 2011. The body is made of epoxy coated ductile iron. The 876VST utilizes a 3/4″ Watts LF719 for the bypass assembly. The 876VST mainline body is visually identical to the 876, 876V and LF876V but the parts do not interchange.