Quick view USA Lab USA Lab ASME Single Layer Solvent Tank - 25LB, 50LB Water (12LB, 24LB Butane) Our USA Lab 25lb Solvent ASME Tank has a 4" Tri-clamp opening with a 1/2" FNPT tri clamp dip tube a MSRP: Was: Now: $495.99 - $699.99 Options