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A flowmeter for measuring fluid flow including a body having a receptacle including a cavity formed by a threadless cylindrical side wall, a stopper adapted to be inserted into the cavity of the receptacle including a generally cylindrical threadless shank having an annular groove, and a clip member

A flowmeter for measuring fluid flow including a body having a receptacle including a cavity formed by a threadless cylindrical side wall, a stopper adapted to be inserted into the cavity of the receptacle including a generally cylindrical threadless shank having an annular groove, and a clip member slidably located in a passage of the body. The clip member is slidable between a first position wherein the clip member is located within the annular groove of the stopper to prevent removal of the stopper from the body, and a second position wherein the clip member is located outside of the annular groove of the stopper whereby the stopper may be longitudinally removed from the receptacle of the body.

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1. A flowmeter for measuring fluid flow, said flowmeter including: a body having a fluid inlet, a fluid outlet, a bore in fluid communication with said inlet and said outlet, a receptacle having a cavity formed by a side wall, said cavity being in communication with said bore, and a passage exten

1. A flowmeter for measuring fluid flow, said flowmeter including: a body having a fluid inlet, a fluid outlet, a bore in fluid communication with said inlet and said outlet, a receptacle having a cavity formed by a side wall, said cavity being in communication with said bore, and a passage extending through said side wall in communication with said cavity; a stopper including a shank having a groove, said shank adapted to be removably inserted into said cavity of said receptacle such that said groove is in communication with said passage of said body; and a clip member located in said passage of said body, said clip member being movable between a first position wherein said clip member extends into said cavity of said receptacle and a second position; whereby when said clip member is in said first position said clip member is adapted to be located in said groove of said shank of said stopper such that said clip member prevents removal of said stopper from said receptacle, and when said clip member is in said second position said stopper is removable from said receptacle of said body. 2. The flowmeter of claim 1 wherein said side wall of said cavity is threadless, and said shank of said stopper is threadless. 3. The flowmeter of claim 1 wherein said groove in said shank is generally annular. 4. The flowmeter of claim 3 wherein said shank includes a first generally cylindrical surface and a second generally cylindrical surface, said groove being located between said first cylindrical surface and said second cylindrical surface. 5. The flowmeter of claim 1 wherein said stopper includes a head, and said body includes an abutment adapted to engage said head when said stopper is inserted into said cavity of said stopper with respect to said body. 6. The flowmeter of claim 5 wherein said head of said stopper includes a plurality of walls, and said abutment of said body includes a plurality of walls, each said wall of said abutment adapted to be located adjacent a respective wall of said head of said stopper. 7. The flowmeter of claim 1 wherein said passage comprises a slot extending through said side wall of said receptacle and a first channel adapted to receive said clip member, said clip member being slidable in said first channel. 8. The flowmeter of claim 7 wherein said body includes a first wall and a spaced apart second wall, said first channel being located in said first wall of said body, said second wall of said body including a second channel adapted to receive said clip member, said clip member being slidable within said first and second channels. 9. The flowmeter of claim 7 wherein said first side wall includes a seat and said clip member includes a protrusion adapted to be located within said seat. 10. The flowmeter of claim 9 wherein said seat comprises an elongate slot, said protrusion of said clip member being slidable within said seat as said clip member slides within said first channel. 11. The flowmeter of claim 1 wherein said clip member includes a first end and a second end, said first end including a recess adapted to receive said shank of said stopper when said clip member is located in said first position. 12. The flowmeter of claim 11 wherein said clip member includes a first leg and a second leg, said recess being located between said first leg and said second leg, said first leg and said second leg adapted to be located within said groove of said shank of said stopper when said clip member is located in said first position. 13. The flowmeter of claim 11 wherein said second end of said clip member includes an aperture adapted to receive the tip of a tool to facilitate sliding movement of said clip member from said first position to said second position. 14. The flowmeter of claim 1 wherein said clip member includes a generally planar top surface and a generally planar bottom surface located generally parallel to said top surface.