Type:
1. According to the position of the valve stem thread: external thread type, internal thread type.
2. According to the flow direction of the medium: straight-through type, direct-current type.
3. According to the sealing form: packing sealing globe valve and bellows sealing globe valve.
The straight-through type is the most common structure, but it has the greatest resistance to the fluid. The direct-flow fluid resistance is small, and it is mostly used for fluids containing solid particles or high viscosity.
The bellows seal globe valve adopts the design of bellows seal, which completely eliminates the shortcomings of ordinary valve stem packing seals that are aging and leaking quickly, not only improves the use of energy efficiency, increases the safety of production equipment, and reduces maintenance costs and frequent maintenance. , but also provides a clean and safe working environment.
Advantage:
1. The product has reasonable structure, reliable sealing, excellent performance, beautiful appearance, and convenient manufacturing and maintenance;
3. The working stroke is small and the opening and closing time is short.
4. The sealing surface is push-welded Stellite cemented carbide, which has good wear resistance, corrosion resistance, anti-friction performance and long service life;
5. The valve stem is quenched and tempered and surface nitrided, with good anti-corrosion and anti-friction properties;
6. Double seals (including bellows design) can be used, and the reciprocating test is 10,000 times without failure, and the performance is more reliable to prevent external leakage;
7. Stem lift position indication, more intuitive;
8. Parts material, flange and butt welding end size can be reasonably selected according to actual working conditions or user requirements to meet various engineering needs.
