| 摘要 |
a. Valve. b. It comprises a body 1 provided with two inlet openings 3, 4 for a fluid, each having a seat 5, 6 for a shutter 7, 8 for stopping off the opening, and a device with a shutter and a member 11 for manoeuvring the shutter. The device comprises two separate shutters 7, 8 and the seats 5, 6 are made by surfaces directed so that their shutter 7, 8 is pressed thereon according to the direction of passage of the fluid in the opening 3, 4. c. Dairy industry. <IMAGE>
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