We'd like to use analytics cookies to understand which symbols people look up, so we know what to research next. They are not used for advertising and we set none of them unless you say yes. What we store.
A line narrowing at a point to restrict flow.
Also known as: Restrictor symbol, Fixed restriction symbol
In ISO 1219 fluid power diagrams a fixed orifice is drawn as a narrowing of the flow line, restricting flow by a fixed amount that varies with pressure difference.
Denotes a fixed restriction in the flow path.
Contexts: Technical drawing
Passes a flow that varies with the pressure across it, which is what a pressure-compensated flow control is designed to avoid.
Contexts: Technical drawing
A flow line pinched inward from both sides at one point, forming a narrow throat.