CONSTANT FLOW RATE VALVE

摘要

PROBLEM TO BE SOLVED: To provide a constant flow rate valve made easily which does not generate the noise by the fluid passing a valve and does not give an excessive pressure to the valve seat body moved by the fluid pressure. SOLUTION: A needle valve body 6 having a needle valve 32 consisting of a upper surface whose diameter is expanded from an upper stream side toward a lower stream side is fixed on the center of a valve main body 3. A cylindrical valve seat body 12 is provided slidably on the inner surface of the sleeve 10 fixed in the valve main body 3. A guide cylinder 14 is provided while connecting by a rib 17 on the center of the valve seat body 12 and a spring 15 is installed shrinkingly between the guide cylinder 14 and the bottom 21 of the spring receive recessed part 20 in the needle valve 32. In the constant flow rate valve, the fluid flows smoothly through the outer periphery of the needle valve body 6.