Foreline Traps

These rechargeable in-line traps effectively block oil backstreaming from mechanical pumps. Any mechanically pumped system, even one with a turbo pump, should have a foreline traps. The trap is placed in the foreline between the roughing pump and the diffusion or turbo pump. It uses a disposable, oxygen-free copper maze absorbent which requires no liquid nitrogen and will not hold water. Typically the maze is replaced every 1-2 years. The seamless body is available in aluminum.

  • A quick change clamp for replacement of maze
  • A viton “O" ring end cap
  • A recessed screen
  • Available in five pipe diameters

Replacement elements (Copper Maze) also available.

Catalog Pipe Body*     Pump Body
Number Diameter Material Capacity Diameter
91050-15 ¾" Aluminum 5 CFM 2½"
91050-20 1" Aluminum 10 CFM 3"
91050-25 1½" Aluminum 10 CFM 3"
Cat # Description Pack Price Quote Quantity
Cat #: 91050-15 Description: FORELINE TRAPS 3/4" Pack: Each Price: $384.00 Add to Quote:
Cat #: 91050-20 Description: FORELINE TRAPS 1" Pack: Each Price: $384.00 Add to Quote:
Cat #: 91050-25 Description: FORELINE TRAPS 1 1/2" Pack: Each Price: $384.00 Add to Quote: