Flow control device for a fluid dispensing apparatus

Details Flow control device for a fluid dispensing apparatus Flow control device for a fluid dispensing apparatus

B - Operations, Transporting

05

B

32/46

B05B 1/32 (2006.01) B05B 1/30 (2006.01) B05C 5/02 (2006.01)

Patent

CA 1233631

Abstract of the Disclosure An improved liquid dispensing apparatus having a micro-adjustment of the opening travel of a needle valve of the apparatus. This micro-adjustment comprises a sleeve-stop member which is axially movable but non-rotatable in the body of the appa- ratus. One end of the sleeve-stop member forms an end-stop to opening movement of the needle valve away from the valve seat. Screw threads of a first pitch are formed on an external portion of the sleeve-stop member and internal screw threads of a second pitch different from the first pitch are formed on a portion of the apparatus body. A generally tubular adjustment screw element is engaged with both the internal screw threads of the body bore and the external screw threads of the sleeve-stop member so that rotation of the adjustment screw element causes differential axial movement of the sleeve-stop member for fine adjustment of the maximum opening needle valve travel.

477535

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