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Coaxial foreline traps offer easy maintenance and room temperature
operation, they require no bakeout or cooling and are virtually
maintenance-free. They are ideally suited for trapping roughing
pump hydrocarbons and preventing them from backstreaming into a
vacuum system. Single piece coaxial foreline traps contain
absorbent filter cartridges filled with a bronze wool element. This
filter element is permanently sealed inside the trap's body and can't
be removed or replaced. These traps are serviced by replacing them
with a spare unit while cleaning the contaminated trap. Single piece
traps are available in 4" and 6" body diameters.
Trap bodies are manufactured from type 304 stainless steel. Traps
are offered with a choice of hose or flange connections in seven
sizes. Del-Seal™ CF metal seal flange connections have one fixed
and one rotatable flange for alignment purposes. Kwik-Flange™ and
Large-Flange™ ISO flanges are clamp-style. Hose connections may
also be welded, but permanent installation is not recommended.
Used traps may be cleaned with a solvent and allowed to dry before
replacing into service. MDC recommends having a spare trap available
for rapid replacement to minimize down time. The used unit
may be cleaned and stored for re-use as convenient.
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