Flow control assembly for subsea applications

A flow control assembly for subsea applications, comprising:

• a valve housing having an inlet port and an outlet port forming a valve flowpath through the valve housing;
• a valve member movable within the valve flowpath between a first position and a second position;
• a valve biasing member configured to urge the valve member towards the first position;
• a damper interface flowpath disposed in the valve housing;
• and
• a damper assembly comprising:
• a damper housing having an inlet in fluid communication with the damper interface flowpath and an outlet in fluid communication with a region external to the damper housing;
• a damper flowpath extending between the inlet and the outlet of the damper housing;
• and
• a damper valve assembly disposed in the damper housing and comprising:
• a first damper check valve having:
• a first damper valve flowpath disposed between a first damper valve inlet and a first damper valve outlet;
• a first damper valve member, a first damper biasing member retainer, and a first damper biasing member disposed in the first damper valve flowpath biasing the first damper valve member into a checked position;
• and
• a plurality of abutting flow restrictors disposed in the first damper valve flowpath, each flow restrictor having an interior opening to restrict working fluid flow through the first damper valve flowpath and control a damper coefficient of the damper assembly;
• a second damper check valve having:
• a second damper valve flowpath disposed between a second damper valve inlet and a second damper valve outlet;
• a second damper valve member, a second damper biasing member retainer, and a second damper biasing member disposed in the second damper valve flowpath biasing the second damper valve member into a checked position;
• and
• a plurality of abutting flow restrictors disposed in the second damper valve flowpath, each flow restrictor having an interior opening to restrict working fluid flow through the second damper valve flowpath and control the damper coefficient of the damper assembly;
• and
• a damper piston disposed in the damper housing that separates working fluid that flows through the damper valve assembly on one side and an external fluid from the region external to the damper housing on the opposite side.