Thread to Barbed Adapter

Idex Thread to Barbed Adapters

Idex Thread to Barbed Adapters provide a reliable solution for connecting soft-walled tubing to systems with threaded receiving ports, such as selection valves, manifolds, pumps, and other low-pressure fluidic components commonly used in chromatography and laboratory workflows.

These adapters are engineered to create secure, leak-free connections between flexible tubing and standard flat-bottom or coned threaded ports. They are commonly used for applications such as connecting peristaltic pump extension tubing to traditional chromatographic hardware.

This product family includes standard one-piece thread-to-barb adapters and one-piece Conical Adapter Bodies, both designed for straightforward installation and dependable performance. These designs offer the convenience of a single-piece adapter while maintaining strong tubing retention across a range of soft-walled tubing inner diameters.

Manufactured from chemically resistant materials such as PEEK, ETFE, and polypropylene, Idex Thread to Barbed Adapters deliver excellent solvent compatibility and durability for routine laboratory and analytical use.

Part No Tubing ID Threads Thru-Hole Material
Thread to Barbed Adapters
P-639 1/16" (1.55 mm) 10-32 Flat Bottom 0.02" (0.5 mm) PEEK
P-646 1/16" (1.55 mm) 1/4-28 Flat Bottom 0.04" (1.0 mm) ETFE
P-647 1/8" (3.20 mm) 1/4-28 Flat Bottom 0.08" (2.0 mm) ETFE
P-648 3/16" (4.75 mm) 1/4-28 Flat Bottom 0.10" (2.5 mm) ETFE
P-663 1/16" (1.55 mm) 10-32 Coned 0.04" (1.0 mm) ETFE
P-664 1/8" (3.20 mm) 10-32 Coned 0.04" (1.0 mm) ETFE
P-665 1/8" (3.20 mm) 10-32 Coned 0.04" (1.0 mm) ETFE
P-668 1/16" (1.55 mm) 1/4-28 Flat Bottom 0.04" (1.0 mm) PEEK
P-689 1/16" (1.55 mm) 5/16-24 Flat Bottom 0.10" (2.5 mm) ETFE
P-690 1/16" – 3/32" (1.55 – 2.38 mm) 1/4-28 Flat Bottom 0.04" (1.0 mm) ETFE
P-691 3/32" – 1/8" (2.38 – 3.20 mm) 1/4-28 Flat Bottom 0.06" (1.50 mm) ETFE
P-692 0.020" – 1/32" (0.50 – 0.80 mm) 1/4-28 Flat Bottom 0.02" (0.5 mm) PEEK
Key Definitions â–¸
Thread to Barbed Adapter
A fluidic fitting designed to connect soft-walled tubing to a threaded receiving port, commonly used in low-pressure chromatography and laboratory fluid handling systems.
Barbed Tubing Connection
A tubing interface that secures soft-walled tubing by gripping the inner wall of the tubing over a ridged or tapered barb to prevent slippage during operation.
Soft-Walled Tubing
Flexible tubing materials such as silicone, Tygon®, or other elastomers commonly used with peristaltic pumps and low-pressure fluid transfer applications.
Flat-Bottom Thread
A threaded port design that seals against a flat surface at the bottom of the receiving port, commonly used in low-pressure chromatography fittings.
Chemical Compatibility
The ability of adapter materials such as PEEK, ETFE, or polypropylene to resist degradation when exposed to common laboratory solvents and reagents.
Frequently Asked Questions â–¸
What are Thread to Barbed Adapters used for?
Thread to Barbed Adapters are used to connect soft-walled tubing to threaded ports on valves, manifolds, filters, and other low-pressure chromatography components.
What types of tubing are compatible with these adapters?
These adapters are designed for soft-walled tubing such as silicone, Tygon®, and other elastomeric tubing commonly used with peristaltic pumps and low-pressure systems.
Do Thread to Barbed Adapters support high-pressure applications?
No. Thread to Barbed Adapters are intended for low-pressure fluid transfer applications. Pressure ratings depend on tubing material, tubing fit, and adapter design.
What thread types are available for Thread to Barbed Adapters?
Common thread styles include 1/4-28 flat-bottom and 10-32 configurations, allowing compatibility with a wide range of chromatography and laboratory hardware.
How do I choose the correct adapter size?
Selection should be based on the inner diameter of the soft-walled tubing and the thread type of the receiving port to ensure a secure, leak-free connection.