● Reinforced Structure & Materials: Ball / Seat:
- Superhard alloy ball with specially developed coating to resist fretting wear.
- Elastic compensation sealing: Disc spring preloaded seat effectively prevents powder accumulation and buildup. Automatic compensation occurs after wear to maintain tight sealing. Dust-proof and wear-integrated stem bearing: PEEK composite graphite bearing reduces friction loss while providing dust protection. Validated by 800,000-cycle tests with particulate powder; virtually no medium enters the bearing moving area, resulting in zero stem wear.
● Optimized Flow Path: Anti-clogging design: Full bore passage with mirror-finish machining and streamlined seat inlet to avoid particle accumulation and jamming. Sealing performance meets ASME B16.104 Class VI.
● Easy Maintenance & Time Saving: Under normal operating conditions, the PDS ball valve delivers trouble-free service with an average cycle life of at least 1,000,000 cycles per year. Maintenance is quick and simple, requiring no special tools to save time and resources. Factory-tested spare part kits can be ordered prior to scheduled maintenance to minimize downtime. In addition, all trim kits are independently tested to guarantee sealing performance.
● Multi-layer Stem Sealing Design: Multi-layer packing plus low-emission configuration is adopted at the stem packing area. This superior wear-resistant assembly improves the reliability of stem sealing.
● Seat Wiper Design: The wiper scrapes off particles between the ball and seat, preventing medium agglomeration and wear on the sealing surfaces.
◎ Material: Carbon Steel, Stainless Steel, Alloy Steel
◎ Nominal Size:NPS 1"~12”、DN 25~300
◎ Pressure Rate:Class 150~600、PN 20~100
◎ Temperature Range: -46°C~+538°C
◎ Operator: Manual, Pneumatic, Electric, etc...
◎ Application range: petroleum, chemical industry, metallurgy, light industry, power station, urban construction water supply, low temperature working conditions, and long-distance pipelines such as oil, gas, and natural transportation.