Patent ID: 8100381

Claim:
A gas control and safety valve for a burner of a modulatable gas heating device, comprising at least a housing ( 1 ) with two controllable closure elements having spaced-apart axes which extend consecutively axially in a straight line in a gas flow direction between an inlet channel ( 2 ) and an outlet channel ( 4 ) of the housing, with both closure elements in a de-energized state independently of one another abruptly closing the gas control and safety valve with a corresponding associated spring element ( 7 , 12 ), wherein the first closure element, which is also used to modulate a gas flow, comprises a throttle element ( 8 ) and spaced therefrom a first spring element ( 7 ), wherein the first closure element is driven by a spindle-nut-system coupled with an electric motor ( 15 ) having at least one field winding ( 16 ), and the second closure element comprises a sealing element ( 10 ) connected with an armature ( 9 ), wherein the armature ( 9 ) is arranged in a cylindrical cavity ( 18 ) so as to operate against a force of a second spring element ( 12 ) acting on the armature ( 9 ), and this cavity is surrounded by a field winding ( 17 ) of the armature ( 9 ) which is formed as part of an electromagnet, and the field winding ( 16 ) of the stepper motor ( 15 ) of the first closure element and the field winding ( 17 ) of the armature ( 9 ) of the second closure element are disposed in the gas flow closure element are disposed in the gas flow, and an ondular washer ( 6 ) disposed on a wall of the housing and in a sandwich structure between opposing end faces of the two closure elements for the purpose of compensating for axial tolerances as well as for ensuring an adequate pressing force of the two closure elements.