The Mooney slam shut valve line from Dresser has been expanded to include a 1in linear plug design and rotary design sizes to 4in. The 2in, 3in and 4in sizes can be integrated into a Flowgrid Regulator or can stand alone.

The valve is a pneumatically actuated device that provides accurate over and/or under downstream pressure protection. Its patent pending design offers a snap acting release of the latch only when designated set points are exceeded. A positive shutoff is achieved instantly with zero pressure differential requirements and a reset can be completed with common hand tools.