Long-neck gate valves are more expensive than ordinary gate valves mainly due to the following reasons:
Design and manufacturing complexity:
Long-neck design: Long-neck gate valves have a longer stem and neck design, which makes the valve more convenient to operate when installed in deep wells or underground. This design requires more materials and more complex manufacturing processes.
Higher mechanical strength: Since long-neck gate valves are usually used in deeper installation environments, they are required to have higher mechanical strength and durability to withstand greater pressure and environmental stress.
Material cost:
More materials: The long-neck design requires the use of more metal materials to manufacture longer stems and necks, which directly increases the cost.
High-quality materials: In order to ensure reliability and durability when installed in deep wells or underground, long-neck gate valves usually use higher-quality materials, which are more expensive.
Special uses and market demand:
Specific application scenarios: Long-neck gate valves are often used in special application scenarios, such as deep wells, underground pipelines or other inaccessible places, which require higher reliability and performance of the valve.
Market size: The market demand for long-neck gate valves is relatively small, but its manufacturing and design requirements are high, resulting in an increase in the cost of a single valve.
Additional functions and features:
Sealing and corrosion resistance: Long-neck gate valves may be designed with more sealing measures and anti-corrosion treatments to meet the use requirements of underground environments. These additional treatments also increase costs.
Convenience of operation: The long-neck design allows operators to control the valve more conveniently, especially when operating deep wells or underground valves on the ground, which also enhances the overall value of the valve.
Overall, the high cost of long-neck gate valves is mainly due to their design complexity, material costs, special uses, and additional functions and features. These factors work together to make long-neck gate valves more expensive than ordinary gate valves.