Omnipure PuROTwist RO System Manifold Conversion Kit with Quick Change Filters 50 GPD PT4000T50-SS-RKOmnipure PuROTwist Conversion Kit Convert Your RO System to Quick Change Convenience Swap your expensive proprietary system for twist on filters that cost half as much and take seconds to replace. Keep your existing tank, faucet, and lines. 50 GPD 4 Stage PuROTwist WHY IT WORKS Stop Overpaying for Proprietary Filters Drop In Conversion PT4000T50 SS RK manifold replaces your old system while reusing your existing tank, faucet, and tubing. Just