CN HDFM - Valve Information, Valve Technology

Three valves in the chemical, plastics, foundry industry, is widely used in the past, mostly manual operation. With the development of science and technology, automatic control technology has been widely used in various production areas, Three air control valve is in this case was born. Three air control valve control technology can power a stretch in the production process to achieve automatic control.

Three air control valve structure as shown in Figure 1.

Figure 1 Three air control valve structure (1. Cylinder block 2. Piston 3. Rod 4. Cylinder head 5. Roller assembly 6. Screw guide sleeve 7. Protective cover 8. Stem 9. Adjustment of wire sets 10. spiral sets of shell 11. valve 12. valve port 13. spool)

Continue reading

Posted in Technical Literature |

Abstract: safety valve sealing surface is too narrow and inappropriate choice of valve materials is the main reason of safety valve annular scars.

Keywords: safety valve; valve flap; opening pressure (set pressure); sealing pressure

Safety valve is widely used in boiler and pressure vessel overpressure relief device on, the performance can meet the requirements of the safe operation of boilers and pressure vessels is essential. According to the order requirements, the safety valve should be inspected regularly, at least once a year. “The steam boiler safety technology supervision order” under Article 145, for the newly installed boiler safety valve and safety valve after repair, but also to test its opening pressure (set pressure) and the sealing pressure.

China provides: steam boiler safety valve sealing test pressure to take 90% of opening pressure and reseating pressure of the lesser value. Air or other gases and water or other liquid with a safety valve sealing test pressure, when the open when the pressure is less than 0.30MPa, lower than the opening pressure 0.030MPa, when the opening pressure of 0.30 MPa greater than or equal to 90% when the opening pressure.

Continue reading

Posted in Technical Literature | Tagged Safety valve

Swagelok Company today announced that as part of a strategy that it has acquired RHPS BV company, this acquisition expands the Swagelok fluid system for the global technology company delivering products and services.

Continue reading

Posted in Industry News | Tagged Acquisition • Valves

In the light weight, durability, and good corrosion resistance based on the advantages, GF 567 butterfly valve product line will expand, new products include PP-H from DN350 to DN600.

Continue reading

Posted in Industry News | Tagged Butterfly valve