Should the throttle valve not be closer to the pump discharge? Otherwise you're putting unnecessary stress on all the piping between the throttle valve and the pump discharge. Especially if your silicon tubing isn't rated to the pump head at sparge temp. Just worth checking to save a bursted tube and a loss of elixir in the event you throttle that back to zero and deadhead your pump. Also, a globe valve, such as your garden tap type can offer more control than a ball valve.
Should the throttle valve not be closer to the pump discharge? Otherwise you're putting unnecessary stress on all the piping between the throttle valve and the pump discharge. Especially if your silicon tubing isn't rated to the pump head at sparge temp. Just worth checking to save a bursted tube and a loss of elixir in the event you throttle that back to zero and deadhead your pump. Also, a globe valve, such as your garden tap type can offer more control than a ball valve.