Assertion: valve's port | /r/HasProperty | rotatable piston valve
Facets:
value: spirally
type: DEGREE
Source sentences:
text: In a piston valve structure for wine instruments, the combination of a valve cylinder with direct air receiving connection thereto and air delivery connection therefrom, an air diversion loop tube with upper and lower intake connecticns to the said cylinder the upper ischarge of which is opposite the air delivery connection, a spirally rotatable piston valve in said cylinder with cross passage and ports for connecting one end of the diversion tube with the direct delivery connect-ion when in depressed position and closing it in the upper position, and a spirally disposed passage extending quarter round said piston with the upper part disposed to connect alternately with the air delivery connection in its up position and with the air receiving connection for the cylinder in its down position, the lower port of which is adapted to connect alternately with the air receiving connection of the cylinder in its up position and with the lower connection of the air diversion tube when in its down position providing for the air to be from, an air diversion loop tube with upper discharge and lower intake connections to the said cylinder, the upper of which is opposite the air delivery connection, a spirally rotatable piston valve in said cylinder with cross passage and ports zlior connecting one end of the diversion tube with the direct delivery connection when in depressed position and closing it in the upper position, and a spirally disposed passage extending quarter round said piston with the upper part disposed to connect alternately with the air delivery connection in its up position and with the air receiving connection for the cylinder in the down position providing for the air to be advanced in an easy curved spiral course through both the direct and diverted loops, the lower port of which is adapted to connect alternately with the air receiving connection of the cylinder in its up position and with the lower connection of the air diversion tube when in its down position.