Microvolume Connectors - Crosses

microvolume cross

Microvolume crosses have a unique two-piece design which allows an extremely small bore in a conventional ferrule and nut fitting. The actual connection area is separated from the nut threads, with the ferrule detail in a metal or polymer insert and the threads machined into a stainless steel or PEEK ring.

Inserts are made of stainless steel, Hastelloy C, Titanium, PEEK, or CTFE. PEEK rings are not usable above 75°C. The stainless steel ring with a metal insert can operate at up to 10,000 psi for HPLC or SFC.

All standard Valco zero dead volume reducing ferrules (ZRF, FS, and FSR) will work in these fittings. The unions in the table below include ring, insert, nuts, and ferrules. The ferrules are the same material as the insert. Nuts are stainless with metal inserts, and PEEK with polymer inserts.

Select a fitting size and bore below to view product numbers:

1/32" fittings

0.15 mm
0.25 mm

1/16" fittings

0.15 mm
0.25 mm

1/32" microvolume crosses, 0.15 mm bore

Insert Ring Product No.
Stainless Stainless MX.5XCS6
Hastelloy C Stainless MX.5XCHC
Titanium Stainless MX.5XCTI
PEEK PEEK MX.5XCPK
CTFE PEEK MX.5XCKF

1/32" microvolume crosses, 0.25 mm bore

Insert Ring Product No.
Stainless Stainless MX.5CS6
Hastelloy C Stainless MX.5CHC
Titanium Stainless MX.5CTI
PEEK PEEK MX.5CPK
CTFE PEEK MX.5CKF

1/16" microvolume crosses, 0.15 mm bore

Insert Ring Product No.
Stainless Stainless MX1XCS6
Hastelloy C Stainless MX1XCHC
Titanium Stainless MX1XCTI
PEEK PEEK MX1XCPK
CTFE PEEK MX1XCKF

1/16" microvolume crosses, 0.25 mm bore

Insert Ring Product No.
Stainless Stainless MX1CS6
Hastelloy C Stainless MX1CHC
Titanium Stainless MX1CTI
PEEK PEEK MX1CPK
CTFE PEEK MX1CKF

MORE INFORMATION

SEE ALSO

TECH TIP

Valco microvolume fittings make it possible to couple 100 micron ID capillary GC, HPLC, or CZE columns without special nuts and ferrules. A stainless ring with one of the plastic inserts provides electrical insulation within the insert, while the PEEK ring achieves total isolation.