Patent ID: 6655405
Filing Date: 2003-12-02
Classification: E21B,Y10T

Abstract:
An improved quick dump valve comprising:a body having a central longitudinal bore with first and second opposing ends, the first end being configured to receive and secure a supply port adapter, the second end being configured to receive and secure a BOP port adapter, the body further including a transverse bore in fluid communication with the central longitudinal bore, the transverse bore defining a vent port; the supply port adapter defining a supply port and the BOP port adapter defining a BOP port; a shuttle having first and second ends with a longitudinal central bore extending from the first end to the second end, the longitudinal central bore including a reduced diameter flow restrictor; a seal between the first end of the shuttle and the supply port adapter and a seal between the second end of the shuttle and the BOP port adapter; the first end of the shuttle being of a larger diameter than the second end; and the shuttle being adapted to slidably reciprocate in the body central bore from a vent position where the shuttle first end is in sealing contact with the supply port adapter, to an open position where the shuttle first end is in sealing contact with the supply port adapter and the shuttle second end is in sealing contact with the BOP port adapter; whereby upon increased fluid pressure in the BOP port causes the shuttle to slide towards the supply port adapter into the vent position, thereby allowing a plurality of shuttle apertures to come into fluid communication with the transverse bore, allowing fluid to flow from the BOP port to the vent port, and whereby upon increased fluid pressure in the supply port adapter causes the shuttle to slide towards the BOP port adapter into the open position, thereby removing the shuttle apertures from fluid communication with the transverse bore to allow fluid to flow from the supply port, through the longitudinal central bore of the shuttle, the reduced diameter flow restrictor, and into the BOP port.