| 摘要 |
<p>PCT No. PCT/NO88/00062 Sec. 371 Date May 4, 1989 Sec. 102(e) Date May 4, 1989 PCT Filed Aug. 15, 1988 PCT Pub. No. WO89/01584 PCT Pub. Date Feb. 23, 1989.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).</p> |
