| 摘要 |
A device for use in the servicing of a sealed fluid system, such as a refrigeration or air conditioning system, comprising a plier-like tool, preferably of the Vice-grip type, one jaw having a cradle for receiving a part of the peripheral wall of a tube in the system, and the other jaw having a piercing needle for piercing a hole in the wall portion of the tube opposite to that being cradled. A resilient bushing seal surrounds the piercing needle and is compressed between the jaw carrying the needle and the tube wall surrounding the pierced hole to prevent leakage of fluid during the piercing operation. A lever is provided for pivotal connection to the pliers tool for squeezing the tubing closed at either side of the pierced hole so that the tool may be removed without loss of fluid from the system.
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