Apparatus for maintenance of ball valve
AssigneeStatoil
InventorKnut Horvei
Life of this patent
Estimating the term…
Abstract
Apparatus for maintenance of the moveable pipe sleeves (52), bearing surface and seals of a ball valve. The apparatus has a bonnet (7) designed to be secured to and form a tight connection with a valve flange (53) and fastened to the underside of the bonnet (7) there are: honing tool for honing of spherical sealing surfaces (56) and conical sealing surfaces (51) on a valve housing; dismounting tool for dismounting of old sealing rings on the pipe sleeves (52); mounting tool for mounting of new sealing rings on the pipe sleeves (52); rotating mechanism (8) for 90 degrees rotation of the honing tool (1) and the pipe sleeves (52).
Claims10
Apparatus for maintenance of a ball valve's moveable pipe seat sleeve (52), with its seating surfaces and seals characterized in that the apparatus comprises a bonnet (7) designed in order to be secured to and form a tight connection with a valve flange (53) of a valve body, said apparatus being secured to the underside of the bonnet (7) within said valve housing, said apparatus comprising:
- a grinding tool (1) for grinding spherical seating surfaces (56) and conical sealing surfaces (51) of said seating surfaces in said valve housing;
- a dismounting tool (3) for the dismounting of old sealing rings (26a) on the pipe sleeves (52);
- a mounting tool (2) for the mounting of new sealing rings (26b) on the pipe sleeves (52);
- and
- a turning mechanism for rotating the grinding tool (1) and the pipe sleeves (52) through a range of 90.degree. to orient the grinding tool (1) in the required position for grinding of said valve seat.
Dependencies are inferred from the claim text.