Are the threads on the stem of a straight-through gate valve all counter-clockwise?

The threads on the stem of a straight-through gate valve are usually counter-clockwise, which prevents the threads from getting stuck and making removal difficult after long-term use. The choice between a rising stem gate valve and a sinking stem gate valve depends on the specific application scenario and requirements. Generally speaking, straight-through gate valves are more suitable for applications that require frequent operation and maintenance, as they are easy to operate, have a simple structure, and are straightforward to maintain ； On the other hand, the hidden stem gate valve is more suitable for applications with high requirements regarding the operating environment, such as operation in enclosed spaces like control rooms, as it features a disc-type handwheel that prevents direct physical contact by the operator during use. In addition, dark stem gate valves also have excellent sealing performance, making them suitable for applications where fluid flow needs to be frequently stopped. .