40
Connectors
LowPressureUnions
Manufactured from PEEK
™
, ETFE, Delrin
®
, polypropylene or PCTFE
Available with 1/4-28, M6 or 10-32 fat-bottom threads
Upchurch Scientifc
®
Low Pressure Unions are available in a variety
of polymers, providing several low-cost and chemically-resistant
options. The union assemblies below include fttings as shown in the
table. The unions in the right column do not include fttings, allowing
for customizing the fitting selection. In some cases, a union can
be confgured to connect two different tubing sizes – for example,
if 1/4-28 Flangeless fittings for 1/16” and 1/8” OD tubing were
selected from pages 25 and 27 they can be used with the P-603 union
to connect the two different tubing sizes.
Low Pressure
Metric Unions
P-602 & P-622
Metric Unions
(M6 internal threads)
0.82”
(2.08 cm)
0.37”
(0.94 cm)
Low Pressure
Standard Unions
P-603, P-620 & P-623
Standard Unions
(1/4-28 internal threads)
0.81”
(2.06 cm)
0.37”
(0.94 cm)
Low Pressure Unions
To use connectors in higher pressure applications, simply replace the
provided fttings with Super Flangeless
™
Nuts and Ferrules, found on
pages 21 – 23.
Use any of the 10-32 fat-bottom fttings on page 21 and 28 to make an
inline connection with our VacuTight Union. This product is designed
for use with 1/16” OD tubing.
Related Products
Low Pressure Male Union
P-645
PCTFE Union
(1/4-28 external threads)
0.38”
(0.97 cm)
1.24”
(3.15 cm)
P-845-01
PEEK Union
(10-32 internal threads)
0.76”
(1.93 cm)
0.25”
(0.64
cm)
VacuTight
™
Union
Low Pressure PEEK Union Assemblies
0.78”
(1.98 cm)
0.44”
(1.12 cm)
P-702 & P-703
PEEK Unions
with Flangeless Fittings
(1/4-28 internal threads)
0.37”
(0.94 cm)
0.81”
(2.06 cm)
P-630 & P-631
ETFE Unions
with Flangeless Fittings
(1/4-28 internal threads)
Low Pressure ETFE Union Assemblies
0.37”
(0.94 cm)
0.81”
(2.06 cm)
P-710
ETFE Union
with Flangeless Fittings
(1/4-28 internal threads)
Part No. Description
Color
Threads
Includes
Thru-hole
Swept Volume Pressure Rating
PEEK UNION ASSEMBLIES
P-702
PEEK Union for 1/16” OD Tubing
Natural
1/4-28 FB
(2) XP-235
0.020” (0.50 mm)
0.41 µL
1,000 psi (69 bar)
P-703
PEEK Union for 1/8” OD Tubing
Natural
1/4-28 FB
(2) XP-335
0.050” (1.25 mm)
2.57 µL
1,000 psi (69 bar)
ETFE UNION ASSEMBLIES
P-630
ETFE True ZDV Union for 1/16” OD Tubing Natural
1/4-28 FB
(2) P-200N/P-245 N/A
N/A
1,000 psi (69 bar)
P-631
ETFE True ZDV Union for 1/8” OD Tubing Natural
1/4-28 FB
(2) P-300N/P-345 N/A
N/A
1,000 psi (69 bar)
P-710
ETFE Union for 1/16” OD Tubing
Natural
1/4-28 FB
(2) XP-245
0.030” (0.75 mm)
0.93 µL
1,000 psi (69 bar)
STANDARD UNIONS
P-603 Delrin True ZDV Standard Union
Natural
1/4-28 FB N/A
N/A
N/A
N/A*
P-620
Polypropylene True ZDV Standard Union Natural
1/4-28 FB N/A
N/A
N/A
N/A*
P-623
ETFE True ZDV Standard Union
Natural
1/4-28 FB N/A
N/A
N/A
N/A*
METRIC UNIONS
P-602 Delrin Metric Union
Black M6 FB
N/A
0.020” (0.50 mm)
0.41 µL
N/A*
P-622
ETFE Metric Union
Blue M6 FB
N/A
0.020” (0.50 mm)
0.41 µL
N/A*
MALE UNION
P-645
PCTFE Male Union
Natural
1/4-28 FB N/A
0.062” (1.60 mm)
61.3 µL
500 psi (34 bar)
VACUTIGHT UNION
P-845-01 PEEK Union for 1/16” OD Tubing
Red
10-32 FB N/A
0.020” (0.50 mm)
0.20 µL
N/A*
* Pressure Rating depends on Fittings selected. See pressure rating for fttings on appropriate page.
FB = Flat-Bottom
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