Penn Plax Flow Control Valve Replacement Set for Cascade Canister FilterThis Penn Plax Flow Control Valve Replacement Set contains both flow control valves needed for the Cascade Canister Filter (in and outflow). This is a genuine Penn Plax replacement part. Includes both in and out flow control valves Replace worn, damaged, or stubborn valves Genuine Penn Plax manufacturer replacement part Specifications: Compatible with Cascade 700 1000 1200 1500 models.