Parts Catalog // Pressure Regulators // FMC John Bean 50-800 PSI Regulator FMC John Bean 50-800 PSI Regulator FMC John Bean 50-800 PSI Regulator FMC John Bean40 GPM Capacity 50-800 PSI Pressure Range. 3/4" NPT inlet and outlet ports. 3/4" NPT overflow. Used on R10 and R20/20 FMC John Bean Piston Pumps. *Prices subject to change PRICE: $798.25 Quantity Add To cart