F52
Scientific Instrument Services, Inc.
TM
Phone: 908-788-5550
www.sisweb.com/catalog/08/F52
Assimilation Traps
A Rechargeable In-Line Trap to Help
Prevent Backstreaming
Features:
-
Replaceable element in a wide variety
of materials
-
Prevents backstreaming
-
Wide variety of connections
T
he Assimilation Traps are similar to our Coaxial Foreline
Traps in that they are used between the rough vacuum
pump and the diffusion (or turbo) pump to prevent
backstreaming of oil into the diffusion pump. In addition, these
traps prevent particulate matter from entering the vacuum pump.
Assimilation Traps have the added feature of a replaceable
filtering element. This allows easy replacement once it becomes
contaminated, clogged, or corroded. A variety of different filtering
mediums are available for specific applications described below.
The quick clamp seal incorporates a viton gasket to provide a
good vacuum seal. In addition to the elements listed, the user
could incorporate his own medium into the assimilation trap for
special applications. For example, if a lot of acidic compounds
were to be pumped by the vacuum pump, NaOH or other basic
compounds could be used in the trap to neutralize acids, and
aluminum oxide filtering material could be used for high efficiency
filtering. For applications such as lyophilizing (freeze drying),
water trapping media such as Drierite
®
could be used. Activated
carbon could also be used to trap organic molecules and keep
them from contaminating the vacuum pump oil.
Assimilation Trap Elements
The standard element is coarse OFHC (oxygen free hard
copper). Optional filtering elements are available as described
below.
Coarse grade OFHC copper elements are standard. They
provide a large surface area for condensing oil vapors. The pure
copper surface attracts hydrocarbons due to its high affinity for that
type of compound.
Coarse grade stainless steel is for applications where a
copper element is not desirable due to the reactivity of copper with
certain chemicals.
Trapping elements should be replaced every
6 months.
Replacement Elements
Replacement Parts
Offset with bottom connector
for Alcatel Vacuum Pumps
Part No.
Description
Replacement Gasket - 250 series
Replacement Gasket - 300 series
Filter Screen - 250 series
Filter Screen -300 series
Part No.
Description
Coarse Mesh Copper
Coarse Mesh Stainless
Coarse Mesh Copper
Coarse Mesh Stainless
Tubulation
Part No.
Body Dimensions(W x L)
Bottom
Top
Replace. Element
Capacity
3" x 6 1/2"
3/4" OD tube
3/4" OD tube
11cfm
3" x 6 1/2"
1" OD tube
1" OD tube
17cfm
4" x 6 7/8"
1 1/2" OD tube
1 1/2" tube
17cfm
3" x 6 3/4"
NW16 Flange
NW16 Flange
11cfm
3" x 6 3/4"
NW25 Flange
NW25 Flange
17cfm
4" x 7 1/8"
NW40 Flange
NW40 Flange
17cfm
3" x 4 7/16"
NW25 Flange Offset
NW25 Flange Offset
17cfm
tip...
