440 when stop surface 415 on front rod 410 engages rod stop 450 this method could also be used to limit downward travel of the needle 200 relative to bottom piece 440 fig2 d illustrates the needle 200 at full upward travel while fig2 e illustrates the needle 200 at full downward travel relative to bottom piece 440 during use the needle guide 480 and its through hole 485 are positioned above the cork of a wine bottle and are secured to or part of bottom piece 440 in this embodiment the needle guide 480 could be used as a cork retainer if a bottle clamping mechanism is incorporated into bottom piece 440 such a bottle clamping mechanism has been left out of this embodiment to detail the other components of the system but could readily be added various embodiments of such a clamping mechanism are described below in alternate embodiments fig3 a 3g illustrate the use of the embodiment depicted in fig2 and detailed in fig2 a e in fig3 a the bottom piece 440 has been placed on top of wine bottle 700 with the upper piece 430 at full upward travel the valve is in its normal position b c the wine 710 and gas 720 within the bottle 700 are in their undisturbed state as bottled by the vintner fig3 b depicts the needle outlet 220 beyond cork 730 and within bottle 700 with the upper piece 430 at full downward travel this position is achieved by simply pushing downward on valve 300 or upper piece 430 the valve 300.