NIPPLE FOR SHUTOFF VALVE AND METHOD FOR INSTALLATION OF SHUTOFF VALVE INTO NIPPLE Russian patent published in 2010 - IPC G01M3/02 E21B34/06 

FIELD: testing equipment.

SUBSTANCE: invention is related to pipeline valves for gas industry, is intended for performance of tests in development and creation of shutoff valves installed into tubing strings. Nipple for testing of shutoff valve comprises body in the form of profiled hollow cylinder with thread at the ends and with profiled inner surface with annular bore for supply of control agent into working cavity of valve. In body there is channel arranged for supply of working fluid into annular bore. On outer surface of nipple there is thrust collar arranged, on nipple body there is at least one washer installed with the possibility of axial displacement and exchange from one end of body to another end, and fastening elements, for instance pins with nuts, are installed in this washer with their one end, and on the other end of fastening elements there is fastening element installed with the possibility of axial displacement, interacting with outlet part of shutoff valve. In order to install shutoff valve into nipple, there is also method proposed for shutoff valve installation into nipple for performance of tests.

EFFECT: lower labour intensiveness of shutoff valve installation into nipple and performance of its tests.

2 cl, 4 dwg