National standard bellows globe valve is suitable for nominal pressure PN16~40, working temperature -29~425°C of petroleum, chemical, pharmaceutical, fertilizer, power industry and other working conditions of the pipeline, cut off or connect the regulating pipeline medium.
Structural characteristics
1. Reasonable product structure, reliable sealing, excellent performance, beautiful appearance;
2. Sealing surface surfacing Co based cemented carbide, wear resistance, corrosion resistance, good anti-friction performance, long service life;
3. Valve stem tempering and surface nitriding treatment, with good anti-corrosion and anti-friction performance;
4. Double seal, more reliable performance;
5. The material and flange of the parts and the size of the butt welding end can be reasonably selected according to the actual working conditions or user requirements to meet various engineering needs.
6. The spool can be made into cutting type and regulating type according to needs.
Standards and specifications
Nominal pressure :1.6~4.0
Shell strength test: 2.4~6.0
Seal test: 1.8~4.4
