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Molecular Sieve Foreline Traps

Bakeable Molecular Sieve Adsorption Trap
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Bakeable Molecular Sieve Adsorption Trap

Features

  • Molecular Sieve Adsorber
  • Bakeable
  • Polished Stainless Steel
  • Large 3/4" I.D. Knurled Nut

Description

Molecular Sieve Traps are effective for trapping hydrocarbons and water vapor. They are used in between the roughing vacuum pump and diffusion or turbomolecular pump to prevent contamination of the system. Molecular sieve traps utilize synthetic zeolite with a high surface area per unit volume. Pressures below one micron are readily achieved. Traps operate at room temperature, eliminating necessity of refrigerants. A built-in heater reprocesses the sieve material when necessary at a bakeout temperature of 300 degrees C

Molecular sieve traps are fabricated of type 304 stainless steel and are offered with a choice of hose, flange or combination connections.

Bake out is accomplished by connecting the heater leads to 115 VAC power source. Always connect a ground wire to the ground lug for safety. In some cases a three-wire heater with built-in ground wire and grounded twist connector can be used. Heat is self-regulating when connected directly to the power source for 90 minutes. Typically, a timer is used. During bake-out the mechanical pump must be running and should be gas ballasted. During this bake out, pressures in the foreline will rise to more than 10-1 Torr. Mass 55 peaks (oil vapor) can rise to levels in excess of an untrapped pump on the high vacuum side of the trap during bake-out. Therefore, it is suggested that the MAT trap be valved off from the system during this process. Normal cycle is 90 minutes with Heater on, valves off and a 90 minute cool-down period.

Molecular Sieve Traps will efficiently trap water vapor.

Replacement Charges

RSC sealed charges are pre-baked out and ready to use. Eventually, the sieve charge should be replaced as there is some oil residue that is baked on. Suggested sieve charge replacement is every year or after 10 bake-outs.

Part No. Body DimensionsTubulationCapacityReplacement Charge # Price
EA
Order
MT075 Molecular Sieve Absorption Trap Repl. Charge
4 1/2in OD x5 1/4in3/4in Pipe- 3/4in pipe5 CFMRSC5 $350.00
Qty
MT75 MOL SIEVE TRAP 3/4" TUBE
------------ $358.00
Qty
MT100 Molecular Sieve Absorption Trap Repl. Charge
4 1/2in OD x5 1/4in1in Pipe- 1in pipe8 CFMRSC5 $355.00
Qty
MT150 Molecular Sieve Absorption Trap Repl. Charge
4 1/2in OD x7 7/8in1 1/2in Pipe-1 1/2in pipe17 CFMRSC8 $365.00
Qty
MT752K Molecular Sieve Absorption Trap Repl. Charge
4 1/2in OD x5 1/4inNW16flange- 3/4in pipe5 CFMRSC5 $375.00
Qty
MT1002K Molecular Sieve Absorption Trap Repl. Charge
4 1/2in OD x5 1/4inNW25flange-1in pipe8 CFMRSC5 $395.00
Qty
MT1502K Molecular Sieve Absorption Trap Repl. Charge
4 1/2in OD x7 7/8inNW40 flange-1 1/2in17 CFMRSC8 $410.00
Qty
MT752MS Molecular Sieve Absorption Trap Repl. Charge
4 1/2in OD x5 1/4in1.33in CF flange-1.33in CF flange5 CFMRSC5 $360.00
Qty
MT1502MS Molecular Sieve Absorption Trap Repl. Charge
4 1/2in ODx7 7/8in2.75in CF flange-1in pipe8 CFMRSC5 $390.00
Qty
Replacement Charges
RSC5 Molecular Sieve Replacement 1lb 5oz Charge
$42.00
Qty
RSC8 Molecular Sieve Replacement 1lb 12oz Charge
$53.00
Qty
MT100MSC MOL SIEVE CHARGE MT75/100
$40.00
Qty
MT150MSC MOL SIEVE CHARGE MT150
$45.00
Qty
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