| 摘要 |
A safety spring 18 for a keg valve fitting 10 has means such as a protruding portion 52 for preventing accidental removal of the spring through an aperture A. The protruding portion may be formed as an outward kink in the spring winding. The spring may also be attached to a seal carrying plate 20 by means such as crimping lugs (44, fig 4), welding or soft soldering to prevent accidental removal of the plate from the spring. |
