What is 3-Way Stopcock (Female Luer + Bond-Tube

Quick Answer

The 3-Way Stopcock (Female Luer + Bond-Tube OD) (CV-037) is a medical plastic component used in IV sets, drip flow control and bag or bottle access. It provides a secure, single-use connection in the fluid path and is molded from polycarbonate. Baixin Bio supplies it in standard form and with OEM/ODM customization.

Definition

A 3-way stopcock (female luer + bond-tube od) is one of the small standardized parts that make a medical fluid path work. Its job is to connect, seal or control flow between two segments of a line, and it is manufactured from device-qualified plastics for reliable single-use performance.

Because the part sits directly in the fluid path, three things matter most: a dependable seal, dimensional consistency from part to part, and a material that is compatible with the fluid and the chosen sterilization method.

It helps to picture where the part sits. A finished single-use device — an IV set, a transfer line, a dialysis circuit — is an assembly of molded plastic pieces joined into one fluid path. Each piece has a narrow job, and the value of standardization is that pieces from a catalog snap together predictably, so an assembler can design around known interfaces instead of bespoke fittings.

About This Component

The 3-Way Stopcock (Female Luer + Bond-Tube OD) is supplied as a single-use molded part for IV sets, drip flow control and bag or bottle access. Its interface follows standard conventions so it mates predictably with compatible components, and it is produced in polycarbonate by default, with other medical-grade resins available on request.

Like all Baixin Bio components, it can be customized for material, color, dimensions, packaging and assembly. For a precise specification — exact dimensions, tolerances, sterilization validation, packaging counts and minimum order quantity — request a drawing and samples through the inquiry form.

Key Advantages

Where 3-way stopcock (female luer + bond-tube od) earns its place, it is for a handful of practical reasons:

Standardized interface that interoperates with compliant luer components
Leak-resistant seal that holds under normal line pressure
Single-use design that supports sterile, disposable workflows
Medical-grade resin selected for fluid compatibility
Dimensional consistency across production lots

Taken together, these are the reasons device makers standardize on molded medical components rather than improvising connections: the part is predictable, documented and available at volume, which keeps the finished device safe and the production line moving.

Common Applications

The settings that rely on 3-way stopcock (female luer + bond-tube od) include:

Disposable diagnostic devices
Syringe and pump connections
IV infusion sets
Blood and fluid transfer lines

What links these applications is risk. Each one moves fluid into or out of a patient or a sample, so a leak, a wrong connection or a contaminated surface has consequences. Standardized single-use components reduce that risk by making every junction predictable and by being discarded rather than reprocessed, which is the safer default for most modern disposable devices.

How to Specify and Choose

A good specification answers a short list of questions up front:

The inner and outer diameters of the tubing the part bonds to
The sterilization method the finished device will undergo
Whether the part is single-use or intended for limited reuse
Color coding or opacity requirements for the assembly
Packaging format and order volume for the program

With those answers in hand, a supplier can confirm a standard part or scope a custom one without back-and-forth. Sharing a drawing or a physical sample removes the remaining ambiguity.

Industry Standards

Small-bore connectors for liquids and gases are governed by the ISO 80369 family, which is progressively replacing the historical luer standard to reduce the risk of misconnection between different clinical applications. Medical-grade resins are selected and documented for biocompatibility, and finished components are sterilized by validated methods such as ethylene oxide (EO), gamma irradiation or steam autoclave depending on the material.

For polycarbonate components, the practical sterilization options are gamma and ethylene oxide (EO); the choice is confirmed against the finished device and its validated process.

Much of the modern standards work exists to prevent misconnection. Historically a single luer taper served many applications, which made cross-connections physically possible; the ISO 80369 series assign distinct geometries to different uses so incompatible lines simply will not mate. When you specify a connector, identifying the correct series for the application is therefore a safety decision, not just a fit decision.

This page is informational and does not replace device-specific regulatory or validation guidance. Confirm exact standards, biocompatibility and sterilization requirements for your product with your quality team and your supplier.

Frequently Asked Questions

Is it compatible with ISO 80369?

Luer interfaces follow small-bore connector conventions. Confirm exact ISO 80369 series compatibility for your application with Baixin Bio before specifying.

What order volumes are supported?

Baixin Bio supplies disposable device assemblers in production volumes, with consistent lot-to-lot quality and export-friendly communication.

Can I request samples?

Yes. Samples and drawings are welcome and recommended before committing to volume. Use the inquiry form to request them.

Is 3-way stopcock (female luer + bond-tube od) available for OEM or ODM projects?

Yes. Baixin Bio manufactures to drawings and samples, customizing material, color, dimensions, packaging and assembly. Send your specification for a quote.

What materials are used?

Depending on the part, medical-grade PC, PP, PVC, ABS, PE or POM is used, selected for the connection method, fluid path and sterilization requirement.