Can you make 3-way stopcocks with custom colors?

Yes. We manufacture 3-way stopcocks in any color including standard blue, white, and red handles, as well as custom colors to match your branding or clinical coding system. Color is specified during the design phase and applied to the handle insert.

What is the difference between Luer lock and Luer slip stopcocks?

Luer lock stopcocks have a threaded collar that screws onto compatible fittings, preventing accidental disconnection. Luer slip (friction fit) connections are simpler and faster to connect but rely on friction alone. For high-pressure applications such as contrast injection, Luer lock is strongly preferred.

Do you make high-pressure stopcocks for contrast injection?

Yes. We manufacture high-pressure rated 3-way stopcocks designed for use with power injectors in CT, MRI, and angiography procedures. These are made from high-clarity polycarbonate and can withstand the pressures typical of contrast power injection.

What is the minimum order quantity for custom stopcocks?

MOQ depends on whether new tooling is required. For existing mold designs, MOQ can be as low as 500 pieces. For fully custom designs requiring new tooling, we discuss MOQ based on tooling investment. We work with small medical device companies and distributors.

Are your stopcocks suitable for arterial line monitoring?

Yes. Our standard 3-way stopcocks are suitable for arterial line monitoring applications. For high-fidelity pressure monitoring, we recommend our high-pressure rated versions with Luer lock connections and clear polycarbonate bodies for visual confirmation of air-free connections.

Custom 3-Way Stopcock Manufacturer — OEM Medical Injection Molding

Name: Custom 3-Way Stopcock — Medical Grade
Brand: EKINSUN LTD
Availability: InStock

About This Product

The 3-way stopcock is one of the most fundamental components in IV therapy and hemodynamic monitoring. It allows clinicians to control fluid flow between three ports — opening, closing, or redirecting flow — without disconnecting IV lines or risking air entry.

EKINSUN has been manufacturing custom 3-way stopcocks for medical device companies and distributors for over a decade. Our injection molding facility in Guangdong produces stopcocks to customer specification — from standard configurations to fully custom designs that are not available from catalog suppliers.

Clinical Applications

IV drug administration — allowing medication to be injected without disconnecting the main infusion line
Arterial line monitoring — connecting pressure transducers while allowing blood sampling and line flushing
Central venous catheter management — multi-lumen access and medication delivery
Contrast media injection — high-pressure versions for CT and MRI power injector use
Hemodynamic monitoring — pressure measurement in ICU and OR settings

Why Order Custom Instead of Catalog?

Catalog stopcocks are designed for the broadest possible market. If you need a specific handle color for your color-coding system, a non-standard port angle, a particular Luer thread dimension, integrated features like a check valve or sampling port, or your own brand name molded into the body — catalog products cannot meet these requirements.

EKINSUN produces custom stopcocks from new tooling or modifications to existing molds. We discuss your requirements, produce engineering drawings for your approval, and then begin tooling. The result is a product that exactly matches your specification and carries your branding.

Ordering from a Hand Drawing or Sample

If you have an existing stopcock you want to replicate, simply send us a sample and we will reverse-engineer it, create a CAD model, and send it back for your approval. If you have a concept in hand-drawn form, we work from sketches — including dimensions written on paper — to produce the CAD model before tooling begins.

Full Technical Specifications

The table below covers the standard configurations we produce. All parameters can be customized — contact us to discuss your specific requirements.

Parameter	Standard Version	High-Pressure Version	Custom OEM
Primary Material	Medical-grade Polycarbonate (PC)	High-clarity Medical-grade PC	PC / ABS / PP — as specified
Handle Material	ABS (blue standard)	ABS (blue or white)	Any color — RAL/Pantone
Connection Type	Luer Lock or Luer Slip	Luer Lock only	Any — as specified
Thread Standard	ISO 594 / ISO 80369	ISO 594 / ISO 80369	ISO or custom thread
Pressure Rating	Standard IV pressure	Power injector rated	As required
Sterilization	EO compatible	EO compatible	EO / Gamma — as required
Biocompatibility	USP Class VI / ISO 10993	USP Class VI / ISO 10993	As specified
MOQ	500 pieces	500 pieces	Negotiable
Sample Lead Time	15–25 business days	15–25 business days	20–35 business days
OEM Branding	Available (pad print)	Available (pad print)	Molded-in or pad print
NDA Available	Yes	Yes	Yes

All specifications are for standard configurations. Custom dimensions, materials, colors, and features are available — contact us to discuss your specific requirements before ordering.

Frequently Asked Questions

Yes. We manufacture stopcocks with custom handle colors to match your clinical color-coding or branding. Standard colors are blue, white, and red. Any Pantone or RAL color is achievable. Color is specified during design and applied to the handle insert during molding.

Luer lock has a threaded collar that locks onto compatible fittings, preventing accidental disconnection — essential for high-pressure or high-risk applications. Luer slip relies on friction and is faster to connect but can pull apart under tension. For contrast injection and arterial lines, Luer lock is recommended.

Yes. Our high-pressure stopcocks are made from high-clarity polycarbonate and rated for power injector pressures used in contrast CT, MRI, and angiography. The clear body allows visual confirmation of air-free connections.

For existing mold designs, MOQ is typically 500 pieces. For new custom tooling, MOQ depends on tooling investment — we discuss this during quoting. We actively work with small medical device companies and distributors.

Yes. Send us an existing stopcock sample and we will reverse-engineer it, produce a CAD model for your approval, then manufacture new tooling and produce parts to match. NDA signed before receiving samples.