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DIFT-40

Foreline Traps, Dry Ice Cooled

Key High's DIFT Series foreline traps are laboratory, tabletop condensation traps that use Isopropanol Alcohol and Dry Ice. When combined in the cold bucket, these two form a "slurry." This "slurry" generates a temperature of approximately -80°C, which is ideal for condensing water vapor and most acidic gases. Holding time is typically 12 to 20 hours, depending on the vapor load and gas temperature.
 
The advantages of the DIFT series traps are the ease of installation, protection of the backing pump from aggressive gases, and easy cleanup. The DIFT trap itself acts as a pump, lowering the overall base pressure of the system. The polycarbonate bonnet cover allows monitoring of the IPA / Dry ice level. The cold bucket holds up to three quarts of the IPA / Dry Ice "slurry." For maximum performance, the cold bucket should be between ½ and ¾ full.

Construction

  • 304 Stainless Steel / Polycarbonate / Viton®
  • Clear bonnet allows the refrigerant level to be safely monitored
  • Three Quart Cold Bucket

Safety

As with any capture trap, safety issues must be addressed.

  • Avoid contact with the refrigerant; it will cause frostbite
  • Dry Ice admits carbon dioxide. Carbon dioxide is colorless, heavier than air, and can cause suffocation. Use only in a well-ventilated area
  • Alcohol is flammable. Keep away from sparks and flame
  • As the dry ice dissolves, it expands significantly. Never clamp the polycarbonate bonnet or the bucket lid

 

 

DIFT Series Foreline Traps, Dry-Ice Cooled

DIFT Series Foreline Traps, Dry-Ice Cooled

DIFT Series Foreline Traps, Dry-Ice Cooled

 
PART NUMBER PORT STYLE A
DIFT-050 1/2" OD tube 10-3/4"
DIFT-075 3/4" OD tube 10-3/4"
DIFT-16 NW 16 11-1/16"
DIFT-25 NW 25 11-1/16"
DIFT-40 NW 40 11-1/16"
 

Product information is subject to change without notice. Product images may include options or accessories not included with the base model.

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For 50 years, Key High Vacuum Products, Inc. has been a trusted leader in precision-engineered stainless steel high vacuum weldments. With tens of thousands of unique weldments in use—from particle accelerators to industrial leak detectors—our expertise is proven across industries. Rooted in innovation, craftsmanship, and an unwavering commitment to customer satisfaction, we deliver high-quality, customized solutions that drive success. Every day, our team brings a unique blend of passion and precision, ensuring your goals are met with excellence—because your mission matters. Experience the Key High difference.
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