A FLUID FLOW control device includes a Housing, a primary and a secondary Flow PATH, both in Fluid communication with the flow path includes a First and second Secondary reducing FLUID FLOW which serves as a Port of inflow to a Cam Ara and an Output Port from the Chamber; and associated method.

摘要

A fluid flow control device comprises a housing having a fluid inlet (7) and at least one fluid outlet (8). A first fluid flow restrictor (1) serving as an inflow port to a chamber (B) in the housing, and a second fluid flow restrictor (2) serving as an outflow port from the chamber (B). The first fluid flow restrictor and the second fluid flow restrictor are configured to generate different fluid flow characteristics; and the chamber (B) comprises actuating means (5,5b-j,51) that is responsive to fluid pressure changes (”P 2 ) in the chamber. The first fluid flow restrictor (1) and the second fluid flow restrictor (2) are configured to impose its respective different fluid flow characteristics based on different fluid properties. In use, the invented fluid flow control device may be used to control fluid flow (F) through the housing, by allowing at least a portion (f) of the fluid to flow through a first fluid flow restrictor (1), into a chamber (B) and out of the chamber via a second fluid flow restrictor (2); and utilizing the pressure change (”P 2 ) in the chamber that occurs when a property of the fluid changes to operate a valve device.