Patent ID: 9353877
Filing Date: 2016-05-31
CPC Classification: F16K,Y10T

Claim Text:
1. A slam-shut safety valve comprising: a valve body; an upper case mounted to the valve body; a diaphragm disposed between the valve body and the upper case, at least part of the diaphragm being displaceable into an interior portion of the valve body and into an interior portion of the upper case, the diaphragm having a first side being exposed to gas system pressure; a spring disposed within the interior of the upper case, the spring exerting a spring force on a second side of the diaphragm opposite the gas system pressure; a plunger connected to the first side of the diaphragm; a release element mounted within the interior of the valve body; a relatch plug operatively connected to a reset rod, the relatch plug cooperating with the release element to move a safety disc between an armed position and an activated position; and, a relatch sheath cooperating with the relatch plug to guide movement of the relatch plug, wherein the relatch plug slides within the relatch sheath.