YDF trunnion mounted ball valves are designed in accordance with API6D and have 2 pc or 3 pc side entry or top entry design on the body. Wide range of sealing material including PTFE, Peek, Devlon, Nylon etc, valve can be used in working temperature range -46℃~ 500℃. This series of valves are optional designed with Double block and bleed or double piston type. All valves are equipped with sealant injection system for both stem and seats to allow external intervention to prevent seat or stem leakage. The top entry ball valve can be used for in-line maintenance services. YDF full range of trunnion mounted ball valves is fire safe test certified by Lloyd’s Register per API607 and API6FA. YDF trunnion mounted ball valves include:

  • 2 pc cast steel side entry
  • Cast steel top entry
  • 3 pc forge steel side entry
  • Cast steel top entry
Design Feature  Product Range 
  • Full port or reduce port
  • Fire safe certified
  • Double block & bleed
  • Emergency sealant injection
  • Cavity pressure self relief
  • Blowout-proof stem
  • Antic-static
  • Optional double piston design
 

2 PC Side Entry

  • Size ： 2~24”（DN50~DN600）
  • Rating ： 150~1500LB（PN16~PN250）
  • Body Materials ： Cast Carbon Steel, Stainless Steel, Duplex Steel
  • Trim ： Carbon Steel, Stainless Steel, Duplex Steel

Top Entry

  • Size ： 2~36”（DN50~DN900）
  • Rating ： 150~1500LB（PN16~PN250）
  • Body Materials ： Cast Carbon Steel, Stainless Steel, Duplex Steel
  • Trim ： Carbon Steel, Stainless Steel, Duplex Steel

3 PC Side Entry

  • Size ： 1-1/2~60”(DN40~DN1500)
  • Rating ： 150~2500LB（PN16~PN420）
  • Body Materials ： Forge Carbon Steel, Stainless Steel, Duplex Steel
    • Trim ： Carbon Steel, Stainless Steel, Duplex Steel