Nalgene Polypropylene 2-Way Stopcock with PTFE Plug, 1/4-5/16″ ID

Description

Product Overview

The Nalgene 6460-0004 is a precision‑engineered polypropylene 2‑way stopcock designed for demanding fluid control tasks in laboratory, pharmaceutical, and industrial settings. Constructed from high‑grade polypropylene, the body offers excellent chemical resistance while maintaining structural integrity under high pressure. The integrated PTFE (Teflon) plug provides a non‑reactive sealing surface that resists corrosion and ensures a leak‑free operation even after repeated cycles of opening and closing. A serrated tubulation on each side of the stopcock guarantees a secure, slip‑free attachment to tubing, reducing the risk of accidental disconnection during critical processes. The stopcock accepts tubing with an inner diameter ranging from 1/4 inch to 5/16 inch, making it compatible with a wide variety of standard laboratory and process tubing. With a compact footprint of 2.5 x 1.75 x 0.75 inches and a lightweight design of just 0.71 ounces, it can be easily integrated into tight spaces and portable setups. The device is fully autoclavable, allowing for routine sterilization without degradation of performance, and its non‑seizing design ensures smooth operation over thousands of cycles.

Usage

Designed for versatility, this stopcock excels in a range of applications where precise fluid direction and isolation are essential. In research laboratories, it is commonly used to control the flow of reagents between reaction vessels, enabling rapid switching between multiple lines without contaminating samples. In pharmaceutical manufacturing, the stopcock provides reliable isolation of cleaning lines, allowing for efficient change‑over between production batches while maintaining strict sterility standards. The robust construction also makes it suitable for field‑based environmental testing, where portable setups require durable components that can withstand temperature fluctuations and mechanical shocks. Its compatibility with standard 1/4‑5/16 inch tubing means it can be paired with a variety of hoses, syringes, and connectors, facilitating seamless integration into existing fluid handling systems. Whether used in a benchtop analytical instrument, a large‑scale process line, or a mobile testing rig, the stopcock delivers consistent performance, reducing downtime and improving overall workflow efficiency.

Why Choose Us

Choosing the Nalgene 6460-0004 means selecting a product backed by Thermo Scientific’s reputation for quality and reliability. Each stopcock undergoes rigorous testing to verify its pressure rating, chemical compatibility, and durability, ensuring that it meets the exacting standards required by professional users. The PTFE plug is engineered to resist wear and chemical attack, extending the service life of the component and minimizing the need for frequent replacements. Autoclavability adds an extra layer of assurance, allowing users to sterilize the stopcock without compromising its mechanical properties. Additionally, the non‑seizing design reduces friction, providing a smooth tactile feel that enhances user control during precise adjustments. Our dedicated technical support team is available to assist with installation guidance, troubleshooting, and customization options, ensuring that you receive comprehensive assistance throughout the product lifecycle. By investing in this stopcock, you gain a reliable, high‑performance solution that supports both routine operations and critical, time‑sensitive processes.

Key Features

• Durable polypropylene body resists chemicals and high pressure for long‑term reliability
• PTFE plug provides a non‑reactive, leak‑free seal that endures repeated cycles
• Serrated tubulation ensures secure, slip‑free tubing attachment for safe operation
• Accepts 1/4‑5/16 inch ID tubing, offering flexibility across many system configurations
• Autoclavable and non‑seizing design reduces maintenance and extends service life
• Backed by Thermo Scientific technical support and comprehensive warranty coverage

FAQ

What types of tubing can be used with this stopcock?

The stopcock is compatible with tubing that has an inner diameter between 1/4 inch and 5/16 inch, covering most standard laboratory and process tubing sizes.

Can the stopcock be sterilized in an autoclave?

Yes, the entire assembly is fully autoclavable. It can withstand typical autoclave cycles (121°C for 30 minutes) without loss of performance or material degradation.

Is the PTFE plug replaceable if it becomes worn?

The PTFE plug is designed for long service life, but if replacement is needed, compatible PTFE plugs are available from Thermo Scientific as part of the same product line.

What pressure rating does this stopcock support?

The stopcock is rated for pressures up to 30 psi (2 bar) for most fluid handling applications, making it suitable for a wide range of laboratory and low‑pressure industrial processes.

How does the non‑seizing feature benefit my workflow?

Non‑seizing ensures that the stopcock rotates smoothly even after many cycles, reducing the effort required to adjust flow paths and minimizing the risk of sudden stops that could disrupt experiments or processes.