Patent ID: 11118608

Abstract:
Twin poppet mechanism (100) of a valve positioner (101) with progressively reduced leakage, comprising a poppet valve assembly (150) comprising a swivel assembly (110) and a pair of poppet valve assembly (150), a poppet assembly (320) of the poppet valve assembly (150) has a conical tilting freedom (103) around its axis of assembly (151), in a first stable state, the swivel assembly (110) tilts towards a first side (104A) and a rubbing or a lapping action is caused between the first sealing surface (241) and the outer sealing surface (332), and between an inner sealing surface (352) of the poppet body two (350) and the chamber sealing surface (316) of the guide chamber (301), in a second stable state, the swivel assembly (110) tilts towards a second side (104B) and the lapping action is caused between the second sealing surface (261) and the outer sealing surface (332), and between the inner sealing surface (352) of the poppet body two (350) and the chamber sealing surface (316) of the guide chamber (301).