Method of assembling thermoplastic valves

Details Method of assembling thermoplastic valves Method of assembling thermoplastic valves

F - Mech Eng,Light,Heat,Weapons

16

K

26/162

F16K 27/10 (2006.01) F16K 27/06 (2006.01)

Patent

CA 1056141

ABSTRACT OF THE DISCLOSURE A method of assembling an all-plastic valve that assures proper positioning of the associated parts while forming a unitary, leak-proof valve body is disclosed. A stem seal and valve stem are inserted in a main body portion of a valve. A rotatable ball is also positioned in the main body in engagement with the stem. A valve seat and seat retainer are mounted in a body end portion. Heat is then employed to the inner end of the body end portion and to one end of the main body portion and the heated portions are pressed together for fusing. The seat retainer preferably functions not only as a seat retainer but also as a spacer with positioning surfaces engage- able with locating surfaces on the main body portion and the body end portion to position appropriately during fusing.

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