| 摘要 |
PURPOSE:To extend the range of flow regulation as well as to change a pilot body in accordance with the sort of gas by providing a cock body and the pilot body respectively equipped with a main gas passage and a pilot gas passage for making the pilot body exchangeable. CONSTITUTION:When in use, a knob 1 is pushed, and a pilot valve 17 is pushed down via a shaft 2. Then, under this condition, a closing element 24 is rotated by rotating the knob 1 fully counterclockwise, and a part of the gas introduced into a gas inlet port 22 of a cock body 8 in one body with a pilot body 9 is led to a pilot gas hole 10. The rest of the gas is led out to a gas apparatus via a small flow gas pass-hole 28 and a main gass passage 30. Meanwhile, for switching over the flow of gas to the medium value, a knob 2 is rotated clockwise until a projection 5a of a plate 5 is fitted in a groove 4c of a receiving plate 4. This construction permits to meet a medium flow gas passage 34 of a closing element 24 with a medium flow gas pass-hole 27 of a body 8 at the opening time of the cock for discharging the gas of medium flow. |
