| 摘要 |
The invention relates to valves making it possible to fill, shut off or measure the fluid pressure of a reservoir, and to cause an alarm or other system to operate. It comprises a body 1 fixed in a sealed manner to a reservoir, a grooved ring for a joint screwed in a sealed manner, a flap 4 equipped with a joint and which can move without causing a leak of fluid. According to the applications, a thrust ring 5 supporting the screw for locking the flap 4 or a thrust bush can be used which serve to hold a spring which is chosen as a function of the antagonistic pressure which will have to be ensured. Amongst the more beneficial applications of the invention, mention may be made of: - controlling the minimum pressure not to be exceeded in spheres ensuring the suspension of certain vehicles; - cost saving which the manufacture and maintenance of this valve represents relative to other pressure monitoring apparatuses. <IMAGE>
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