Extended Stem Butterfly Valve Brings Operational Convenience and Enhanced Sealing

Extended stem butterfly valves combine the advantages of ordinary butterfly valves with the characteristics of an extended stem design, offering unique application value in valve and pipeline systems. Their main features are as follows:

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1. Extended Stem Butterfly Valve Operational Convenience

- Remote Operation Adaptability: The extended stem design keeps the valve's operating mechanism (such as handle, worm gear, etc.) away from the valve body and pipeline, making it particularly suitable for valves installed underground, in confined spaces, or in high-temperature, low-temperature, or highly corrosive environments. Operators can easily control the valve's opening and closing via the extended stem without needing to approach harsh working conditions, improving operational safety and convenience.

- Force-Saving Transmission: In some extended stem butterfly valves, the extended stem, in conjunction with the transmission mechanism, optimizes force transmission and reduces operating torque, enabling easy opening and closing even for large-diameter valves.

2. Adaptability to Special Operating Conditions

- Excellent Space Compatibility: When pipelines are buried underground (e.g., municipal water supply and drainage, underground pipe networks) or installed in confined spaces such as equipment mezzanines, the extension rod can be extended to the ground or to a convenient operating position, solving the problem of insufficient space for direct valve body operation.

3. Sealing and Regulation Performance

- Reliable Sealing: Inheriting the sealing advantages of ordinary butterfly valves, a good seal is achieved through the tight fit between the butterfly plate and the valve seat. Common soft seals are suitable for low-pressure, normal-temperature applications and applications with high sealing requirements (e.g., food and pharmaceutical pipelines); hard seals can adapt to high-pressure and high-temperature conditions (e.g., industrial steam pipelines), ensuring no leakage when the medium is cut off.

- Flexible Flow Regulation: The butterfly plate angle can be precisely controlled (0°~90°) via the extension rod, thereby regulating the flow rate of the pipeline medium, suitable for systems requiring dynamic flow regulation (e.g., air conditioning water circulation, industrial circulating water systems).

4. Structural and Installation Advantages

- Compact Structure: While ensuring the functionality of the extended stem, the overall structure remains relatively simple and lighter than gate valves and globe valves of the same specifications, saving installation space and reducing pipeline load.

- Convenient Installation and Maintenance: The extended stem can be customized in length according to actual needs. Installation requires no complex adjustments to match the pipeline. For later maintenance, the transmission mechanism can be inspected by disassembling the extended stem components, eliminating the need for frequent valve body disassembly and reassembly, thus reducing maintenance costs.

5. Wide Range of Applications

- With the above characteristics, extended stem butterfly valves are widely used in municipal water supply and drainage, sewage treatment, petrochemical, power, metallurgy, food and pharmaceutical industries. They can meet the shut-off requirements of general operating conditions and adapt to the operation and regulation requirements of special environments.

ZZJG Valve provides the above information on extended stem butterfly valve. If you want to know more about extended stem butterfly valve, please contact us via WhatsApp or email.