| 摘要 |
Disclosed herein is a nozzle assembly comprising a housing (13) including an outer end, an inner end, a central bore (19) extending between the inner (17) and outer (15) ends and including a valve seat (21) adjacent the outer end of the housing, and a spring seat (51) extending transversely to the central bore, a needle member (31) located in the central bore, moveable relative to the housing between an open position and a closed position, and including a valve surface (33) engaged with the valve seat when the needle member is in the closed position, and an inner end, a needle retainer (41) fixed to the needle member in spaced relation to the inner end of the housing end so as to engage the inner end of the housing when the needle member is in the open position, a spring retainer (35) fixed to the inner end of the needle member, and a spring (65) normally biasing the needle member to the closed position and including a first end bearing against the spring seat of the housing, and a second end bearing against the spring retainer.
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