PCTFE (KEL-F®) Seats lapped to the ball as standard Our seats are lapped to the ball giving us very tight tolerance and shut-off while lowering our torques dramatically. Our seats do not leak. Fully Tested Valves to -196°C (-320F) PCTFE Material What is PCTFE? AFT FluorotecPreviously the material was also produced by 3M and branded as KEL F, production was discontinued in the 1990s. PCTFE is commonly used as a valve seat material where a high performance sealing material is needed for use with cryogenic gases and or liquids down to a lowest operating temperature of
Mar 09, 2010 · RE:PCTFE and RPTFE. 2. rneill (Mechanical) 7 Mar 10 18:36. PTFE is pure teflon seating. It is good but has limited strength and thus is suitable for lower pressure valves. Immune to most environments. RTFE is reinforced (typically glass) seating. It is better and will be suitable to valves with higher pressures but may still be limiting in PTFE VS PCTFE - Material engineering general discussion Mar 23, 2016 · PCTFE = Kel-F Both are suitable for use for ball valve seats. Big difference is the PCTFE is harder and has higher friction. Impact of both factors is that it tends to require more torque to turn the valve open and closed.
Polychlorotrifluoroethylene PCTFE is well suited for cryogenic parts such as ball valve seats & seals. APT typically molds and machines the Daikin Neoflon M-400H grade of PCTFE. PCTFE is a tough, durable fluoroplastic that exhibits unique physical and PTFE is pure teflon seating. It is good but has limited strength and thus is suitable for lower pressure valves. Immune to most environments. RTFE2thanks rneillSeat material, like material in(/on any other part of a valve, is ultimately deemed suitable or not according to operating conditions. If you're lJust to add a little more the rneills excellent summary. The choice of material can greatly affect the torque required to turn the valve. PTFE anJust want to make sure that you're aware that PEEK (polyetheretherketone)and PCTFE (chlorotrifluoroethylene) are not the same thing. PCTFE was onceService temperature is often the reason for choosing these materials for seats, here is a link that can be of more use on PCTFE than me writing abo
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