Abstract: A modular subsea control pod assembly having a retrievable pod assembly and a receptacle assembly. The retrievable pod assembly has a stab block and at least one function port having an opening in the stab block. The retrievable pod assembly includes a pod gate which is adapted to move between a first position in which the pod gate covers the function port opening and a second position in which the pod gate does not cover the function port opening. The receptacle assembly includes a receptacle base module adapted to receive the stab block and a receptacle function port adapted to be connected to a blowout preventer hydraulic operator. The receptacle assembly includes a receptacle gate which is adapted to move between a first position in which the receptacle gate covers the receptacle function port opening and a second position in which the receptacle gate does not cover the receptacle function port opening.

Abstract: A two-position, three-way subsea non-interflow valve design comprises a plug assembly. An elongated member is positioned within the valve for relative movement with respect to the plug assembly. A first seal on the plug assembly remains closed until a second seal with the elongated member circumscribes the function port. Further movement of the elongated member opens the first seal to allow flow from the supply to the function port. Two seals are presented in the flow path of the supply port to eliminate interflow to any other valve opening.