I searched but could not find an answer to my question. I have a Hayward Perflex EC30 filter. I would like the ability to vacuum to waste and by-pass my filter. I see that a 3-way diverter valve can be installed between my pump and filter. My question is this, do I have to use a Hayward brand valve or can any 3-way valve work? I can find 3-way valves at a hardware store for much cheaper than the Hayward brand valves! Thanks in advance for your help!