A differential control valve and method of operation as a residential dry pipe fluid control valve which provides for a high liquid to gas trip ratio. The valve includes a housing having an interior surface defining an internal chamber with a central axis. The valve further includes a first port; a second port and a third port, each in communication with the internal chamber. A first valve seat is disposed along the interior surface of the housing circumscribed about the central axis and a second valve seat is circumscribed about the first valve seat. A sealing member defines a sealed position and an open position with respect to the valve seats. A spring member biases the seal member toward the open position and is disposed between the sealing member and the interior of the housing.
申请公布号
WO2013058819(A1)
申请公布日期
2013.04.25
申请号
WO2012US25512
申请日期
2012.02.16
申请人
TYCO FIRE PRODUCTS LP;RINGER, YORAM;GOLINVEAUX, JAMES E.