The VB75 Unloader is now sold here at Flowjet CLeaning Equipment. A strong, robust solution for containing trapped pressure. Designed to allow different pressures and water flow when desired, simultaneously, preventing the machine from building an excessive amount of back pressure and causing a fault with your pressure washer. An ideal solution for machines that are in constant use. With the option of altering its pressure for different jobs, this VB74 Unloader is a viable option for any customer.