Cold Traps - Cold Fingers KF54V

Construction, Operation And Principles

Cold traps are used in conjunction with vacuum pumps to collect condensation produced from humidity or solvents and these cold traps can be used for many different tasks. The most common application is collecting condensation produced from humidity or solvents from rotating discs, vacuum pumps or high vacuum systems that use oil diffusion or turbo-molecular pumps. In this case a common coolant such as liquid nitrogen (LN2) or dry-ice (CO2) with acetone is normally used.

Cold Traps – Different Versions

Simple cold traps, which are also known as cold finger condensers, are used in conjunction with vacuum pumps and the condensation is forced out of the humidity or solvents used in the chemical applications. The cold trap is used to protect the vacuum pump in this case and the speciality of this type of construction is that the user does not need to use a stand to hold the cold trap. The cold trap has a rim, which is hung inside the Dewar-flask’s support ring. The cold trap can be changed very quickly without any problems arising.

Cold Trap, two Sections


Typ S 54V-K16-Z

A special version is the two section cold trap. It has a KF NW 50 flange as the connection part. This type of cold trap enables the condensation area to be separated from the upper section of the cold trap. This ensures that the removal of the condensation and the cleaning of the cold traps can be carried out very easily. This version is also suitable for when a cold trap has to be permanently installed inside an apparatus, so that only the lower section of the cold trap has to be removed in order to empty out the condensation. The KF NW 50 flange connecting piece is secured in place using a spring Aluminium clamp and this is included in our scope of delivery.

Technical Data

Cold traps complete

TypeCondensate capacityCoolant capacityDewar TypeCold trap jointsArt. No.
Typ KF 54V-K16-Z-18C200 ml1,6 l18 CKF NW 1617110
Typ KF 54V-K16-Z-DSS2000200 ml1,2 lDSS 2000KF NW 1617111
Spare partsArt. No.
Cold trap S 54V-K16-Z17115
Dewar made of glass Type 18 C10220
Plasic ring, two-parted for Type 18 C17116
Dewar made of stainless steel Type DSS20002103
Plasic ring, two-parted for Type DSS 200017117

Cold traps complete with CO2 wire basket

TypeCondensate capacityCoolant capacityDewar TypeCold trap jointsArt. No.
Typ KF 54V-K16-Z-18C-CO2200 ml1,6 l18 CKF NW 1617130
Typ KF 54V-K16-Z-DSS2000-CO2200 ml1,2 lDSS 2000KF NW 1617131
Spare partsArt. No.
Cold trap S 54V-K16-Z17115
Dewar made of glass Type 18 C10220
Plasic ring, two-parted for Type 18 C with wire basket17120
Dewar made of stainless steel Type DSS 20002103
Plasic ring, two-parted for Type DSS 2000 with wire basket17121

Cold Trap Catalog as PDF: Download

Technical Datasheet