| 摘要 |
<p>Apparatus has a tubular body (1) including a valve (5) and an adapter (2) connecting the tubular body (1) to a valve seating (102). An extractor (3) comprising a shaft (30) and a coupler (31), which is connected by bayonet fittings-undercuts (39) and shanks (40) to the shaft (30) and mechanically attached by screws (37) to the valve assembly spindle (103), is movably mounted on the tubular body (1). The coupler (31) includes a socket (33) that fits on and facilitates unscrewing of the spindle and valve assembly from the valve seating (102). After being unscrewed, the valve assembly can be lifted past the valve (5) and, after closing the valve, withdrawn reliably from the tubular body (1) for being serviced.</p> |
