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Duolok calibration unions are used to connect tube systems to pressure transmitters. SSP offers calibration unions with 1/4-28 UNF and 5/16-24 UNF and 5/16-24 UNF threads typically used with Honeywell and Rosemont units respectively.
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Calibration tube fitting image

Calibration Union - Duolok
Calibration tube fitting

Calibration Union - Duolok
Calibration tube fitting image

Calibration Union - Duolok
Calibration tube fitting

Calibration Union - Duolok
Calibration tube fitting image

Calibration Union - Duolok
Description N/A Duolok Honeywell Calibration Calibration Union, 1/4 Tube Fitting x 1/4-28 Calibration, 316 SS N/A Duolok Rosemont Calibration Calibration Union, 1/4 Tube Fitting x 5/16-24 UNF threaded Calibration, 316 SS N/A Duolok Honeywell Calibration Calibration Union, 1/4 Tube Fitting x 1/4-28 Calibration, Alloy 400 N/A Duolok Rosemont Calibration Calibration Union, 1/4 Tube Fitting x 5/16-24 UNF threaded Calibration, Alloy 400 N/A Duolok Honeywell Calibration Calibration Union, 1/4 Tube Fitting x 1/4-28 Calibration, Alloy C-276
Body Material N/A 316 SS N/A 316 SS N/A Alloy 400 N/A Alloy 400 N/A Alloy C-276
Connection 1 - Type N/A Tube Fitting
Connection 1 - Size N/A 1/4 in
Connection 2 - Type N/A Calibration
Connection 2 - Size N/A 1/4-28 UNF N/A 5/16-24 UNF N/A 1/4-28 UNF N/A 5/16-24 UNF N/A 1/4-28 UNF
Shape N/A Straight
A N/A 1.69 in N/A 2.32 in N/A 1.69 in N/A 2.32 in N/A 1.69 in
C N/A 0.70 in
D N/A 0.60 in
E N/A 0.06 in
F N/A 0.78 in N/A 1 in N/A 0.78 in N/A 1 in N/A 0.78 in
G N/A 9/16 in
H N/A 1/2 in
T N/A 1/4 in
Specialty N/A Calibration
B N/A 1.40 in N/A 2.03 in N/A 1.40 in N/A 2.03 in N/A 1.40 in
I N/A 0.43 in N/A 0.40 in N/A 0.43 in N/A 0.40 in N/A 0.43 in
J N/A 0.20 in N/A 0.25 in N/A 0.20 in N/A 0.25 in N/A 0.20 in
R N/A 1/4-28 UNF N/A 5/16-28 UNF N/A 1/4-28 UNF N/A 5/16-28 UNF N/A 1/4-28 UNF
End Connections N/A TF x Calibration