Wet abrasive systems typically have a combination of equipment, controls, and piping systems that allow various fluid flows to be controlled in order to provide the various operations. A fluid control circuit is used to provide fluid to the correct locations for each operation. A fluid control circuit has a multiport selector valve. The selector valve allows selective fluid communication between the fluid inlet and either a first fluid outlet or a second fluid outlet. A first piping system is in fluid communication with the first fluid outlet and a second piping system is in fluid communication with the second fluid outlet. The fluid control circuit may also have jumper piping system between the first piping system and the second piping system. The combination of a multiport selector and the piping systems provide a convenient blast system to operate.