The DTL SH1092 C Housing Shuttle Valve is a hydraulic element that automatically switches the higher pressure source between two inlets and sends it to one outlet. 1 This valve is most commonly applied in hydraulic systems for protective or control purposes, making sure the system is provided with the most favorable pressure. The "Housing" description is probably referring to a certain model or type of the valve body, and the "C" may signify a certain series or type within the SH1092 model family.