Non Rising Stem Gate Valves

Hanno Valve Non Rising Stem Gate Valves are particularly suitable for applications where installation space is limited, high sealing performance and ease of operation are required, such as small piping systems or where installation space is strictly limited.

1、 The working principle of Non Rising Stem Gate Valves

Non Rising Stem Gate Valves are devices that open and close valves by rotating the valve stem. When the valve stem rotates upwards, the valve disc rises accordingly, opening the fluid channel; When the valve stem rotates downwards, the valve disc descends and closes the fluid channel. Due to the metal seal between the valve disc and the valve seat, the concealed stem gate valve has good sealing performance. In addition, the opening and closing torque of the concealed stem gate valve is relatively small, making it easy to operate and suitable for various environments and usage scenarios.

2、 Structural characteristics of Non Rising Stem Gate Valves

1. Valve body: The valve body of Non Rising Stem Gate Valves is usually made of materials such as cast iron, cast steel, stainless steel, etc., which have high strength and corrosion resistance. There is a fluid channel inside the valve body, and the inlet and outlet of the channel are connected to the pipeline.

2. Valve disc: The valve disc is a key component of a concealed stem gate valve, used to control the opening and closing of fluid channels. The valve disc is usually made of the same material as the valve body, with good sealing performance and wear resistance.

3. Valve stem: The valve stem is a component that connects the valve disc and the handle, and drives the opening and closing of the valve disc by rotating the valve stem. Valve stems are usually made of high-strength materials such as stainless steel to ensure good corrosion resistance and longer service life.

4. Sealing structure: The sealing structure of a concealed stem gate valve mainly consists of a valve disc and a valve seat. The valve seat is usually made of elastic materials such as rubber and polytetrafluoroethylene to ensure a tight fit between the valve disc and the valve seat, thereby achieving good sealing effect.‌

Materials

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