Straight PTFE Key Stopcock
Product Code : EL-GS-10267
Lab Glassware Manufacturer, based in Ambala, Haryana, India, manufactures and exports the Straight PTFE Key Stopcock, a chemical-resistant, grease-free in-line flow-control fitting for laboratory glassware. Manufactured since 1982, this stopcock is supplied to research institutions, school and college laboratories, and distributors across Peru, Ecuador, Bolivia, and the wider Andean Highlands region.
Quick answer: The Straight PTFE Key Stopcock uses a solid PTFE key in a straight-through glass barrel, giving corrosion-resistant, dry-operating flow control for setups where a 90-degree burette-style stopcock is not required.
| Size (mm) | Bore Size (mm) |
|---|---|
| 12.5 | 2.5 |
| 14.5 | 2.5 |
| 14.5 | 4.0 |
| 18.8 | 6.0 |
Manufacturer-stated dimensions — confirm before ordering.
Straight-Through Flow Control with a PTFE Key
A straight-pattern stopcock is used where the flow path should not change direction, such as in-line on a gas or liquid manifold, a burette body, or a distillation setup. Choosing the PTFE-key version over a glass straight stopcock removes the need for periodic re-greasing and reduces the risk of the key seizing after contact with aggressive reagents. For burette-specific applications requiring a right-angle outlet rather than straight-through flow, see the PTFE Key Stopcock Burette.
Frequently Asked Questions
Which bore size is right for my application?
Smaller bores (2.5mm) suit fine metering, while the 6.0mm bore permits faster bulk flow; confirm your flow-rate requirement with our team if unsure.
Is the PTFE key replaceable?
Manufacturer-stated: the key is a fitted component of the assembly; contact us for spare-parts availability for a specific size.
Can this stopcock be autoclaved?
The glass barrel withstands standard autoclaving; confirm PTFE-key temperature tolerance with our team before repeated high-temperature sterilization cycles.
Do you export to South America?
Yes, Lab Glassware Manufacturer regularly exports laboratory glassware and fittings to Peru, Ecuador, and Bolivia, and can quote FOB or CIF terms on request.
Related Products
- Glass Straight Stopcock
- PTFE Key Stopcock Burette
- PTFE Needle Valve Stopcock
- Glass Stopcocks
- Laboratory Glass Stopcocks
Request a Quote
For indicative FOB/CIF export pricing on the Straight PTFE Key Stopcock, or to request a formal quotation, please contact us or view current tenders.
Last updated: September 2026