Blue White Foot Valve [Ethylene Propylene O Ring] (C 340E) ppcpumps The Val Pak generic Anthony Apollo The Val Pak generic Anthony Apollo DE filter collection elbow is designed for compatible 2 inch filter applications where the plumbing path needs a proper directional transition inside or around the collection area or is no longer trustworthy after years of service The Blue White foot valve is designed for compatible chemical feed applications where suction line flow control is needed at the supply container The C 340E is a practical service part when a compatible Blue White system needs a foot valve to restore dependable suction side control