ValvTect BioGuard Plus 6 prevents bacteria and solves all other diesel fuel related problems - eliminates need for multiple products. Jerry Nessenson, president of ValvTect Petroleum, announced today that ValvTect has received formal approval for the registration and sale of ValvTect BioGuard Plus 6 multifunctional biocide diesel additive from the U.S. Environmental Protection Agency (EPA) and in all 50 states. “Prior to the EPA’s approval of ValvTect BioGuard Plus 6, all biocides…