Rising Stem Gate Valve VS Non-Rising Stem Gate Valve

1. The stem of the rising stem gate valve is exposed and can be seen, while the stem of the non-rising stem gate valve is in the valve body and cannot be seen;

2. The rising stem gate valve is driven by the thread of the valve stem and the steering wheel, thereby driving the gate to rise and fall; the non-rising stem gate valve drives the gate to rise and fall through the rotation of the valve stem at a fixed point. When switching, the steering wheel and the valve The rods are connected together relatively immobile.

3. The transmission thread of the non-rising stem gate valve is located inside the valve body. During the opening and closing of the valve, the valve stem only rotates in place, and the opening and closing state of the valve cannot be judged with the naked eye; The thread is exposed outside the valve body, and the opening and closing and position of the gate can be judged intuitively;

4. The height of the non-rising stem gate valve is low, and the installation space is relatively small; the height of the rising stem gate valve is high when it is fully opened, and large installation space is required;

5. The stem of the rising stem gate valve is outside the valve body, which is conducive to maintenance and lubrication; the stem thread of the non-rising stem gate valve is inside the valve body, which is difficult to maintain and lubricate, and the stem is easily eroded by the medium, and the valve is easily damaged. In the scope of use, the rising stem gate valve is more extensive.