That refers to something that moves around in a circle.
Rotary tiller, multi disc harrow.
It is a type of shutoff valve with a thin valve disc which is opened or closed by sliding the disc in/out with a sliding handle, perpendicular to the fluid (or powder/grain) flow.
They are usually ceramic disc's in gate valves , best thing is to buy the whole tap hat for it.
LJ hutchen
It is a type of shutoff valve with a thin valve disc which is opened or closed by sliding the disc in/out with a sliding handle, perpendicular to the fluid (or powder/grain) flow.
A butterfly valve is from a family of valves called quarter turn valves. The "butterfly" is a metal disc mounted on a rod. When the valve is closed, the disc is turned so that it completely blocks off the passageway. When the valve is open, the disc is rotated a quarter turn so that it allows unrestricted passage. The position of the disc is effected from outside the valve. gas butterfly valve is one kind of butterfly valve, the main feature is that all the functions are supported by gas just as the Electric Butterfly Valve which supported by electric.
A butterfly valve is from a family of valves called quarter turn valves. The "butterfly" is a metal disc mounted on a rod. When the valve is closed, the disc is turned so that it completely blocks off the passageway. When the valve is open, the disc is rotated a quarter turn so that it allows unrestricted passage. The position of the disc is effected from outside the valve. gas butterfly valve is one kind of butterfly valve, the main feature is that all the functions are supported by gas just as the Electric Butterfly Valve which supported by electric.
on the bottom side of the throttle body.
ceramic disc
I'm no brass instrument, but rotary valves are used for several instruments. French horns all seem to have them. They're pretty common on tubas as well. There are even some rotary valve trumpets out there. I don't know, though, anything about the advantages and/or disadvantages of rotary valves as opposed to the piston valves that seem to be more common for most brass instruments.
A twin cylinder rotax 536 cc rotary valve motor