VALVE APPARATUS TO PREVENT CONTAMINATION OF FLUID IN FLUID REGULATOR Russian patent published in 2016 - IPC F16K31/126 F16K41/12 G05D16/06 G05D16/10 

FIELD: control equipment.

SUBSTANCE: group of inventions relates to control equipment and is designed as a valve apparatus to prevent contamination of a fluid in a fluid regulator. Valve apparatus comprises a housing disposed within a fluid flow passageway of fluid regulator to define a low-pressure side of fluid flow passageway and a high-pressure side of fluid flow passageway. Housing has a bore that at least partially defines fluid flow passageway when coupled to fluid regulator. Housing has a movable valve assembly disposed within bore via a non-threaded connection in fluid communication with low-pressure side of fluid flow passageway and external threads for threaded coupling of housing to an opening of fluid regulator. Seal system prevents impurities from flowing between high-pressure side of fluid flow passageway and low-pressure side of fluid flow passageway. Filter for capturing impurities is disposed in inlet chamber formed by opening of fluid flow regulator. Said filter comprises a part surrounding part of said movable valve assembly, and a closed end, configured to hold in said opening of said movable valve assembly. Versions of valve devices are disclosed.

EFFECT: group of inventions is aimed at improving reliability of operation of regulator as a whole.

15 cl, 6 dwg