Abstract: An apparatus for controlling fluid flow from a first location to a second location includes a body, a valve, a shear seal, and a biasing member. The body has a fluid conduit and a chamber. The conduit has an inlet that communicates with the first location and an outlet that communicates with the second location. The valve is disposed in the chamber and has a seal separating the chamber into a pressure section and a flow section. The pressure section communicates with the outlet via an outlet fluid branch. The shear seal has a movable sealing element disposed on the valve and a stationary sealing element disposed in the body. The biasing member urges the valve to a closed position wherein the stationary sealing element sealingly engages the movable sealing element. Pressure communicated by the outlet fluid branch also urges the valve to the closed position.

Abstract: An apparatus for controlling fluid flow that includes a chamber having a first valve and a second valve; a sensor that senses a pressure parameter associated with the chamber; and a controller programmed to operate the first valve and the second valve in response to the sensed pressure parameter may be used to control for flow and to obtain data relating to a formation and/or formation fluid. The apparatus may include a manifold for using a fluid mover to convey fluid between the first location and the second location and at least one module received by the manifold.