Cutoff valve spool is greater than the exact location of a closure element

(Because the throttle Greater exactly open or closed position, but rather the spool regulating member), the valve flow rate is changed in accordance with the flow characteristics and the position of the valve.

air cylinder manufacturers

Typical spool consists of two key parts: the spool, he is punch part of the regulatory element; seat ring, he is a die part. Part of the spool into the seat ring called the spool head, called the spool lever and extending through the top of the cut-off valve part. Car on the top of the spool rod threaded in order to match with the first round of the institutions. Monotone seat spool main advantage is the possibility of its tightly closed (in some cases better than 0.01% of the maximum flow rate of the valve can be achieved). This situation is caused due to the force of the direct effect of manual manipulation of the bearing surfaces.

pilot valves