RTFE (Reinforced Polytetrafluoroethylene) RTFE (reinforced Teflon®) is mixed with a percentage of glass filler material to provide additional strength, stability and resistance to abrasive wear, and less permeation. This reinforcement permits higher pressures and temperatures than unfilled PTFE.
What is soft seat for butterfly valve?
Huamei Soft Seat (PTFE/RTFE) High-Performance Butterfly Valves provide a bi-directional bubble-tight shutoff (zero leakage) by the use of a patented seat. This unique seat design creates a self-energized seal in vacuum to-low pressure applications.
What is devlon seat material?
Devlon® Devlon® is among the toughest and hardest wearing thermoplastic available. It was designed for the valve industry as a seat material to provide a wide temperature and pressure range. EPDM has gained increased use in the municipal water industry because of its resistance to water disinfected with chloramines.
Is PTFE good for steam?
PTFE is resistant to most chemicals including acids, bases, oils, steam and other chemicals. It is also very tough and abrasive resistant, even at elevated temperatures.
What is the difference between PTFE and RTFE?
RTFE (Reinforced Teflon®: 85% PTFE, 15% Glass Fiber) RTFE has improved wear and abrasion resistance over PTFE while maintaining its chemical compatibility. Its versatile temperature characteristics allow RTFE to be used in saturated steam applications.
What is TFM material?
TFM is a chemically modified PTFE that fills the gap between conventional PTFE and melt-processable PFA. According to ASTM D 4894 and ISO Draft WDT 539-1.5, TFM is classified as a PTFE.
What is the difference between RTFE and PTFE?
PTFE (TFE or Teflon®) – PTFE is the most chemically resistant of all plastics. RTFE (Reinforced TFE) – RTFE is compounded with a selected percentage of fiber glass filler to improve strength and resistance to abrasive wear, cold flow, and permeation in molded seats.
What is a RTFE valve seat?
RTFE (Reinforced Teflon®: 85% PTFE, 15% Glass Fiber) RTFE is the standard seat material for most A-T Controls floating ball valves. This seat should not be used in caustic (sodium hydroxide, potassium hydroxide, etc.) service.
Is Teflon used in bulletproof vests?
Early KTWs were coated with Teflon. However, some manufacturers continue to coat their bullets with various compounds, notably Teflon and molybdenum disulfide, as a protective layer against barrel wear.
