Reducing Ferrules

reducing ferrules

Reducing ferrules provide an inexpensive way to connect small temporary transfer lines to valves or fittings designed for larger tubing. For long term use, we recommend our reducing unions, internal reducers (IZRs), or external reducers (EZRs), as appropriate.

reducing ferrules Internal zero dead volume reducing ferrules are used with standard Valco internal fittings, which have a male nut and a female fitting detail. The ferrule’s integral pilot fills the pilot cavity between the end of the ferrule and the bottom of the detail, yielding a zero dead volume fitting. (Not for use in Cheminert HPLC PAEK valves (C1-C5 series) since the fitting detail in these valves has an extended pilot length.)

Size PEEK Glass-filled PTFE Valcon Polyimide
1/16" to 1/32" ZRF1.5PK-5 ZRF1.5TFG-5 ZRF1.5V-5

Sold in packages of 5.
Also available by special order in other sizes, and in CTVE and virgin polyimide.

reducing ferrules External zero dead volume reducing ferrules are used with all standard external style fittings, which have a female nut and a male fitting detail. This ferrule has a slightly longer pilot than the internal version to accommodate the longer external detail, resulting in a zero dead volume fitting. A single groove indicates that the ferrule is for use in an external detail.

Size PEEK
1/8" to 1/16" EZRF21PK-5
1/4" to 1/8" EZRF42PK-5

Sold in packages of 5.
Also available by special order in other sizes, and in glass-filled PTFE, CTFE, Valcon polyimide, and virgin polyimide.

reducing ferrules Standard reducing ferrules can be used where mixing is not a problem, such as with liquid or gas delivery, since the resulting connection will not be zero dead volume. A 1/16" to 1/32" ferrule of this style is simply a 1/16" ferrule with a 1/32" hole. These ferrules can be used in either internal or external type fitting details.

Size PEEK Valcon Polyimide
1/8" to 1/16" RF21PK-5 RF21V-5

Sold in packages of 5.
Also available by special order in other sizes, and in glass-filled PTFE, CTFE, and virgin polyimide.