US 2013/0284675 A1 · VALVE

Abstract

A valve (16) comprising a housing (30), a valve filter media (34) and an actuator (48). The housing (30) defines a chamber (32) having an inlet (44) and outlet (48). The media (34) is positioned within the chamber (30) such that liquids flowing between the inlet (44) and outlet (48) pass through the media (34). The valve filter media (34) is formed of a material which can absorb hydrocarbons, causing the media (34) to change its material properties thereby restricting the flow of liquids through the valve (16) and increasing the pressure differential across the media (34). The actuator (48) has at least a portion positioned within the housing chamber (32). If the pressure differential across the media (34) exceeds a predetermined threshold, the media (34) bears against the actuator (48) causing the actuator (48) to restrict the flow of liquids through the valve (16).

Claims15

Dependent claims

A valve, comprising:

a housing defining a chamber having an inlet and an outlet;
a valve filter media within the chamber arranged such that liquids flowing between the inlet and the outlet pass through the valve filter media, the valve filter media being arranged to absorb hydrocarbons causing the valve filter media to change its material properties thereby restricting the flow of liquids through the valve and increasing the pressure differential across the valve filter media;
and
an actuator having at least a first portion positioned within the housing chamber;
wherein if the pressure differential across the valve filter media exceeds a predetermined threshold the valve filter media is arranged to bear against the actuator causing the actuator to restrict the flow of liquids through the valve.

2 more elements

Dependencies are inferred from the claim text.

Valve

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Valve

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Abstract

Claims15