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31
Reducing Unions
External/internal reducing union
Standard bore
(EZRU21)
1/16" internal
1/8"
external
Internal/external reducing union
Standard bore
(EZRU.51)
1/32"
external
1/16"
internal
Bulkhead internal/external
reducing union
(EZBRU.51)
Bulkhead external/internal
reducing union
(EZBRU21)
External/internal reducing unions
In these reducing unions, the larger size tubing is made up with an external
fitting and the smaller size tubing is made up with an internal fitting. In the
bulkhead version, the bulkhead nut is on the side with the internal fitting. Other
configurations, such as an external nut on the locking nut side, are available on
special request.
Standard material is 300 series stainless. Also available in Hastelloy C, gold-plated
stainless, and titanium.
Standard
Bulkhead
Bulkhead
Tubing OD Bore
Prod No Price Prod No
Price
panel hole diameter
1/16" to 1/32" 0.25 mm EZRU1.5
––
–
–
––
0.50 mm EZRU1.5L
EZBRU1.5L
5/16"
1/32"
EZRU1.5T
EZBRU1.5T
5/16"
1/8" to 1/32"
0.25 mm EZRU2.5
––
–
–
––
0.50 mm EZRU2.5L
EZBRU2.5L
5/16"
1/32"
EZRU2.5T
EZBRU2.5T
5/16"
1/8" to 1/16" 0.25 mm EZRU21C
––
–
–
––
0.75 mm EZRU21
EZBRU21
5/16"
1/16"
EZRU21T
EZBRU21T
5/16"
1/4" to 1/16"
0.25 mm EZRU41C
––
–
–
––
0.75 mm EZRU41
EZBRU41
7/16"
1/16"
EZRU41T
EZBRU41T
7/16"
1/4" to 1/8"
1.0 mm EZRU42
EZBRU42
7/16"
2.0 mm EZRU42L
EZBRU42L
7/16"
1/8"
EZRU42T
EZBRU42T
7/16"
more information
Fused silica
adapters . . page 16-17
Polymeric ferrules . . . 13
External unions . . . . 27
Internal reducing
unions . . . . . . . 29
Internal unions . . . . 26
Internal/external reducing unions
These reducing unions are the opposite of the ones above. The larger size tubing
is made up with an internal fitting and the smaller size tubing is made up with an
external fitting. In the bulkhead version, the bulkhead nut is on the side with the
internal fitting. Standard material is 300 series stainless.
Internal/external reducing unions are typically used to connect 1/16" stainless
steel tubing to fused silica tubing.
Only polymeric ferrules should be used with 1/32" external details – metal
ferrules will distort them. These unions include a stainless steel ferrule for the
1/16" SS tube, but because of the variety of fused silica ODs and corresponding
ferrules, a 1/32" fused silica adapter must be ordered separately.
(See page 16.)
Standard
Bulkhead
Bulkhead
Tubing OD Bore
Prod No Price Prod No
Price
panel hole diameter
1/16" to 1/32" 0.25 mm EZRU.51
EZBRU.51
5/16"
0.50 mm EZRU.51L
EZBRU.51L
5/16"
1/32”
EZRU.51T
EZBRU.51T
5/16"
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